Cov tshuaj tiv thaiv kev sib xyaw ua ke ntawm cov pob zeb yog ib hom tshuaj tshwj xeeb uas ua rau cov txheej txheem ntawm kev ua kom cov cement noo qeeb. Qhov no ua rau nws muaj peev xwm ua haujlwm nrog cov pob zeb ntev dua ua ntej nws tawv. Cov tshuaj tiv thaiv kev sib xyaw ua ke pab cov neeg ua vaj tse muaj kev tswj hwm ntau dua ntawm kev tso thiab kev ua tiav los ntawm kev ua kom cov txheej txheem tshuaj lom neeg uas ua rau kev sib xyaw ua ke qeeb. Qhov no tseem ceeb heev thaum lub sijhawm nchuav cov pob zeb nyuaj, huab cua kub, lossis kev thauj mus los ntev. Lub sijhawm ua haujlwm ntev dua no tiv thaiv cov pob qij txha txias, txo qhov kev pheej hmoo ntawm kev tawg ntawm thermal hauv cov pob zeb loj, thiab ua kom ntseeg tau tias cov haujlwm loj txhua tus muaj tib qho tiav ntawm qhov chaw.

Nkag Siab Txog Cov Khoom Siv Uas Ua Rau Cov Khoom Siv Pob Zeb Tsis Zoo: Kev Txhais Lus Thiab Txoj Hau Kev

Ib yam khoom siv los tiv thaiv kev sib xyaw ua ke ntawm cov pob zeb ua haujlwm los ntawm kev cuam tshuam cov txheej txheem thaum ntxov uas tshwm sim thaum cov cement hydrates, tshwj xeeb tshaj yog cov uas muaj tricalcium silicate (C₃S) thiab tricalcium aluminate (C₃A). Thaum cov tshuaj ntxiv no sib xyaw rau hauv cov pob zeb ua ke, lawv lo rau cov khoom me me ntawm cov cement thiab ua ib qho kev thaiv luv luv uas ua rau qeeb qeeb ntawm kev tso tawm cov calcium ions thiab kev tsim cov calcium silicate hydrate (CSH) gel, uas yog qhov uas tuav cov pob zeb ua ke thaum nws tawv.

Chemical Composition thiab Active Ingredients

Muaj peb pawg tshuaj uas feem ntau cov tshuaj Retarders los ntawm. Lignosulfonates, uas los ntawm kev sib tsoo ntoo pulp, yog ib txoj hauv kev pheej yig los qeeb cov txheej txheem tsim kho. Hydroxycarboxylic acids, xws li citric thiab tartaric acids, cia koj tswj tau qhov ntev npaum li cas ib yam khoom siv los teeb thiab feem ntau siv rau hauv cov ntawv thov ua vaj tse . Hom thib peb yog sodium gluconate (CAS 527-07-1), uas yog cov polyhydroxycarboxylate bio-based ua los ntawm fermenting glucose. Cov hmoov crystalline dawb no muaj cov nyhuv tswj kev teeb tsa linear, txhim khu kev qha thiab tsis ua rau flash-sets ntawm txhua koob tshuaj. Qhov no ua rau nws tshwj xeeb tshaj yog siv rau kev ua vaj tse kub uas qhov kev nrawm thermal yog qhov teeb meem.

Cov Tshuaj Retarders Sib Cuam Tshuam Nrog Cement Hydration Li Cas

Cov tshuaj tiv thaiv ua rau theem dormant ntev dua ua ntej theem acceleration pib thaum lub sijhawm induction ntawm cement qhuav. Lub sijhawm tos no cia cov pob zeb ua kom yoog tau ntev dua, feem ntau yog ntxiv ob mus rau plaub teev, raws li qhov ntau thiab huab cua siv. Cov txheej txheem no cuam tshuam nrog kev nyiam cov calcium ions thiab tsim cov khoom sib xyaw nrog cov khoom hydration thaum ntxov. Qhov no nres kev loj hlob ntawm CSH crystals rau lub sijhawm luv luv. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kev ncua sij hawm hydration no feem ntau ua rau muaj zog compressive ntev dua thaum siv ntawm cov koob tshuaj pom zoo. Qhov no yog vim tias qhov kev cuam tshuam qeeb dua ua rau cov qauv microstructure ntau dua thiab tuab dua.

Hom thiab Qhov Zoo ntawm Cov Khoom Siv Ua Vaj Tse

Muaj ntau hom tshuaj uas ua rau cov pob zeb tsis khov uas siv rau hauv kev lag luam tsim kho, thiab txhua hom yog tsim los rau ib txoj haujlwm tshwj xeeb thiab cov kev xav tau kev ua tau zoo. Thaum cov thawj coj yuav khoom paub txog qhov sib txawv no, lawv tuaj yeem phim cov khoom zoo dua rau cov kev xav tau ntawm qhov project thaum tseem tau txais qhov zoo tshaj plaws thiab tus nqi zoo tshaj plaws.

Cov Tshuaj Tiv Thaiv Ntuj thiab Cov Tshuaj Ua Los Ntawm Khoom Siv

Qee cov tshuaj ua kom qeeb qeeb yog cov suab thaj ua kom zoo thiab cov khoom lignosulfonate. Lawv muab kev qeeb qeeb me ntsis ntawm tus nqi qis. Rau cov haujlwm sib tov ua tiav ib txwm uas lub sijhawm tseeb tsis tseem ceeb, cov ntaub ntawv no ua haujlwm zoo. Cov tshuaj ua kom qeeb qeeb, xws li phosphates thiab gluconates, muab kev ua haujlwm zoo dua thiab cov koob tshuaj raug dua. Piv txwv li, sodium gluconate zoo heev ntawm chelating hlau ntawm alkaline pH ntawm 10–13, yog li nws tuaj yeem siv ua ob qho tib si set retarder thiab industrial chelating agent. Vim tias nws tuaj yeem siv tau ntau txoj hauv kev, nws yog cov khoom tseem ceeb hauv kev kho dej, kev tsim kho, thiab kev lag luam ntxuav.

Cov Khoom Siv Nto vs. Cov Khoom Sib Xyaws Ua Ke

Cov tshuaj tiv thaiv nto raug muab tso rau ntawm cov formwork lossis cov pob zeb ua vaj tse kom cov txheej sab saud tsis txhob khov sai dhau. Qhov no cia cov xuab zeb tiav pom tseeb. Cov tshuaj sib xyaw ua ke raug ntxiv rau hauv cov pob zeb ua vaj tse, yog li lawv ua rau qeeb qeeb ntawm kev nchuav sib npaug thoob plaws. Cov khoom sib xyaw ua ke, xws li sodium gluconate, khaws cov khoom zoo ib yam thaum muaj ntau ntau. Qhov no txo ​​qis kev hloov pauv thiab ua kom muaj kev ua tau zoo hauv cov haujlwm tseem ceeb xws li cov kev khiav dav hlau thiab lub hauv paus pas dej.

Key Performance Advantages

Siv cov tshuaj retarders muaj ntau yam txiaj ntsig dua li tsuas yog ncua sijhawm xwb. Lawv ua kom cov txheej dhau los sib txuas thaum lub tshuab nqa tom ntej raug tso, uas tiv thaiv cov pob qij txha txias kom tsis txhob tsim cov dej ncaj qha. Hauv cov tsev ua los ntawm cov pob zeb loj, cov tshuaj retarders txo qhov kub siab tshaj plaws ntawm kev ua kom noo. Qhov no txo ​​qhov sib txawv ntawm qhov kub uas ua rau muaj kab nrib pleb. Cov qhov rai thauj mus los ntev yog qhov zoo rau cov neeg ua cov khoom sib tov vim tias lawv cia lawv cov khoom mus txog cov chaw nyob deb nroog lossis hla cov nroog coob coob yam tsis cuam tshuam rau lawv lub peev xwm ua haujlwm. Cov nplaim tiav zoo dua vim tias cov neeg ua haujlwm muaj sijhawm txaus los txhuam, ua kom zoo nkauj, thiab siv cov khoom ziab ua ntej nws pib teeb tsa.

Yuav Siv Cov Tshuaj Retarder Concrete Set Li Cas Zoo Rau Cov Haujlwm Tsim Kho

Ua tib zoo saib seb koj siv cov tshuaj txhuam pob zeb ntau npaum li cas, koj sib tov li cas, thiab ib puag ncig thaum koj ua nws. Yog tias cov thawj coj kev yuav khoom paub txog cov teeb meem thev naus laus zis no, lawv tuaj yeem xaiv cov khoom uas ua haujlwm zoo nrog cov txheej txheem tam sim no thiab zam cov teeb meem uas tshwm sim.

Cov Lus Qhia Txog Kev Siv Tshuaj thiab Cov Txheej Txheem Sib Xyaws

Cov koob tshuaj ib txwm muaj yog nruab nrab ntawm 0.2% thiab 0.5% ntawm qhov hnyav ntawm cov cement, tab sis qhov no tuaj yeem hloov pauv nyob ntawm qhov kub thiab txias, hom cement, thiab lub sijhawm ntev npaum li cas koj xav kom qhov kev ncua sijhawm kav ntev. Yuav kom tiv thaiv kev loj hlob ntawm cua sov, qhov kub siab dua xav tau cov koob tshuaj ntau dua. Yuav kom paub tseeb tias cov sodium gluconate uas muaj qhov huv siab (≥98.0% purity) tau nthuav tawm sib npaug hauv cov khoom sib tov, xav tau cov khoom siv sib tov kom raug. Cov khoom ntxiv yuav tsum tsis txhob muab tso rau ntawm cov cement qhuav; nws yuav tsum tau ntxiv rau hauv dej sib tov lossis sib tov thaum lub sijhawm tsim kho. Yog tias koj siv ntau dhau, nws tuaj yeem ua rau muaj kev ncua sijhawm uas kav ntev li ntau hnub, tab sis yog tias koj ua kom cov pob zeb ntub, nws thaum kawg yuav teeb tsa thiab ncav cuag nws lub zog qub.

Application Scenarios thiab Case Studies

Cov tshuaj retarders siv los tswj qhov kub ntawm cov dej hauv cov haujlwm ua vaj tse loj xws li kev tsim cov pas dej thiab cov raft supports uas tuab tshaj ob meters. Hauv cov xwm txheej no, kev teeb tsa qeeb qeeb ua rau qhov kub ntawm lub hauv paus poob qis qeeb, uas tiv thaiv kev tsim ettringite qeeb thiab cov kab nrib pleb thermal. Cov tuam txhab sib xyaw ua tiav ntev uas ua haujlwm rau cov haujlwm tsim kho hauv thaj chaw nyob deb nroog siv cov tshuaj retarders kom cov khoom sib xyaw tuaj yeem twj tau tom qab ntau tshaj 90 feeb ntawm kev mus ncig. Cov tshuaj retarders ntawm qhov chaw siv rau hauv cov pob zeb kho kom zoo nkauj kom pom cov pob zeb tiav. Qhov zoo nkauj ntawm qhov chaw kawg nyob ntawm seb lub sijhawm ua tiav zoo li cas.

Kev saib xyuas kev nyab xeeb thiab kev ua raws cai

Cov tib neeg uas siv sodium gluconate yuav tsum hnav cov khoom siv kev nyab xeeb ib txwm xws li hnab looj tes thiab tsom iav kev nyab xeeb, txawm tias nws tsis muaj kev phom sij zoo li lwm cov chelators. Yuav kom tsis txhob ua pob, kev khaws cia yuav tsum tau ua rau hauv qhov chaw txias, qhuav uas tsis muaj dej noo. Cov khoom tsis muaj chloride (≤0.05% chloride content), yog li tsis muaj kev pheej hmoo ntawm kev xeb ntawm cov khoom siv hlau. Nws ua tau raws li cov qauv teev los ntawm ASTM C494 Hom B thiab EN 934-2. Sodium gluconate yooj yim rau kev daws vim nws tawg ua tej daim me me. Raws li cov txheej txheem sim OECD 301E, nws tawg ntau dua 90% hauv 28 hnub.

Xaiv Cov Khoom Siv Uas Ua Rau Cov Khoom Siv Pob Zeb Tsis Zoo Rau Koj Cov Haujlwm

Yuav kom xaiv tau cov tshuaj tiv thaiv kev sib tsoo zoo tshaj plaws , koj yuav tsum xav txog kev ua haujlwm ntawm kev siv tshuab, kev ua raws li txoj cai, kev ruaj khov ntawm cov khoom xa tuaj, thiab tag nrho cov nqi ntawm kev muaj. Rau cov neeg yuav khoom B2B kom nrhiav tau cov kev daws teeb meem uas ua tau raws li cov kev xav tau ntawm cov haujlwm luv luv thiab cov hom phiaj npaj mus sij hawm ntev, lawv yuav tsum saib ntau yam sib txawv.

Cov Qauv Kev Ua Haujlwm

Cov khoom sib xyaw ua ke niaj hnub no yuav tsum sib xws nrog cov polycarboxylate superplasticizers vim tias ntau qhov project xav tau ob qho tib si siab flowability thiab ntev workability. Cov qauv polyhydroxycarboxylate ntawm sodium gluconate ua kom ntseeg tau tias nws ua haujlwm zoo nrog PCE sib xyaw yam tsis cuam tshuam nrog lawv. Nws tuaj yeem siv nrog ntau hom cement, suav nrog cov av nplaum ya siab (HVFA) pob zeb, vim tias 10% kev daws teeb meem muaj pH ntau ntawm 6.2 txog 7.8. Txawm li cas los xij, cov koob tshuaj yuav tsum tau kho kom zoo vim tias cov av nplaum ya twb qeeb qeeb cov txheej txheem kho. Cov khoom yuav tsum muaj cov kab linear teeb tsa qeeb uas cia cov engineers kwv yees qhov tseeb teeb tsa lub sijhawm txawm tias thaum kub hloov pauv.

Certification thiab Quality Assurance

Rau cov haujlwm tsim kho thoob ntiaj teb kom ua haujlwm tau, cov ntaub ntawv siv yuav tsum ua tau raws li ntau tus qauv thoob ntiaj teb. Rau cov khoom siv hauv qib zaub mov, cov khoom zoo muaj kev pom zoo xws li FCC (IV), BP, thiab USP. Rau cov khoom siv hauv qib kev tsim kho, lawv muaj REACH, HALAL, KOSHER, thiab ISO 9001. Kev kuaj ntawm SGS thiab Intertek los ntawm lwm tus neeg ua kom ntseeg tau tias cov kev cai xws li cov hlau hnyav (≤10 ppm Pb), cov sulfate theem (≤0.05%), thiab cov tshuaj txo qis (≤0.5%) tau ua tiav. Cov ntawv tso cai no tseem ceeb heev rau cov tuam txhab uas yuav khoom los ntawm tsoomfwv thiab ua haujlwm nrog Fortune 500 tuam txhab xws li CEMEX thiab BASF.

Kev Npaj Khoom Siv thiab Kev Yuav Khoom

Thaum piv rau cov nqi xa khoom ncaj qha los ntawm cov chaw muag khoom, cov nqi ncaj qha los ntawm lub Hoobkas los ntawm cov chaw txhim khu kev qha txo cov nqi los ntawm 20–40%, uas yog qhov tseem ceeb rau cov haujlwm loj uas xav tau ntau pua tons ntawm cov khoom sib xyaw. Qhov tsawg kawg nkaus ntawm kev txiav txim kom muaj li ntawm tsib tons yog qhov sib xyaw zoo ntawm kev yooj yim nkag mus thiab kev txuag ntawm qhov ntsuas. Cov khoom lag luam txheem yuav tsum xa tuaj tsis pub dhau peb hnub, thiab cov mis tshwj xeeb ua rau cov khoom sib sau ua ke hauv zos lossis cov chaw ntug dej hiav txwv uas muaj sulfate ntau yuav tsum tuaj txog tsis pub dhau tsib txog xya hnub ua haujlwm. Lub sijhawm ua thawj coj yog qhov tseem ceeb heev rau cov phiaj xwm tsim kho. Nyob ze rau cov chaw nres nkoj txo cov nqi xa khoom, thiab cov pab pawg txhawb nqa thev naus laus zis uas hais ntau hom lus ua kom ntseeg tau tias txhua tus tuaj yeem nkag siab ib leeg thoob plaws kev ua haujlwm thoob ntiaj teb.

Sustainability thiab Environmental Responsibility

Cov kev xaiv uas lwj tau yooj yim dua li cov tshuaj chelator xws li EDTA thiab NTA tau muab qhov tseem ceeb tshaj plaws los ntawm kev yuav cov phiaj xwm uas nyob ntawm qhov tshiab. Cov khoom siv bio-based ntawm sodium gluconate los ntawm kev fermentation glucose yog ua raws li kev siv zog ua vaj tse ntsuab thiab cov qauv ntawv pov thawj LEED. Cov neeg muab khoom uas pom zoo kom txo cov pa roj carbon los ntawm ib feem pua ​​​​​​ntawm xyoo 2030 yog ua raws li cov qauv lag luam ESG uas tab tom ua qhov tseem ceeb rau cov tswv lag luam. Vim tias nws tuaj yeem siv ua ob qho tib si ua tus neeg ncua kev ua vaj tse thiab tus neeg sawv cev chelating kev lag luam, nws ua rau nws muaj peev xwm rau ntau lub chaw haujlwm yuav khoom ntau, uas ua kom cov saw hlau muab khoom yooj yim dua thiab cia cov tuam txhab tau txais txiaj ntsig ntawm kev txuag nyiaj ntau.

Kev Ua Kom Zoo Dua Qhov Ua Tau Zoo ntawm Cov Pob Zeb Nrog Cov Tshuaj Tiv Thaiv: Cov Kev Xyaum Zoo Tshaj Plaws

Yuav kom tau txais txiaj ntsig zoo tshaj plaws ntawm cov tshuaj admixtures uas tiv thaiv kev sib xyaw, koj yuav tsum paub tias lawv ua haujlwm li cas nrog lwm qhov ntawm cov khoom sib xyaw thiab cov thev naus laus zis tshiab yuav hloov txoj kev tsim kho yav tom ntej li cas. Kev koom ua ke cov tshuaj retarder teeb tsa rau hauv koj txoj kev npaj tsim khoom ua kom muaj kev ruaj khov thaum lub sijhawm tso cov khoom sib xyaw ua ke.

Synergistic Formulation Strategies

Thaum koj sib tov cov tshuaj retarders nrog lwm cov admixtures, koj tuaj yeem ua cov pob zeb ua vaj tse nrog cov yam ntxwv uas yog qhov kev tsim kho xav tau. Thaum cov tshuaj retarders raug sib tov nrog cov neeg sawv cev uas nkag mus rau hauv huab cua, qhov kev tiv thaiv rau kev khov-thaw zoo dua hauv qhov chaw txias, thiab qhov ua haujlwm tau zoo ib yam thaum muab tso rau. Cov tshuaj retarders txo dej (ASTM C494 Hom D) ua ob qho tib si. Lawv txo cov dej rau cement thaum ua rau lub sijhawm teeb tsa ntev dua. Qhov no ua rau lawv zoo meej rau cov haujlwm muaj zog siab uas xav tau qhov xau tsawg. Vim tias sodium gluconate zoo heev ntawm chelating hlau, nws tiv thaiv cov khoom sib tov dawb los ntawm kev hloov xim thaum lawv kov cov khoom muaj hlau ntau lossis dej hauv av.

Cov Txheej Txheem Ua Pob Zeb Rau Huab Cua Kub

Thaum qhov kub sab nraud siab dua 30°C (86°F), kev tsau dej sai dua, uas tuaj yeem ua rau cov khoom tawv ua ntej nws kho tag nrho. Cov txheej txheem uas ua haujlwm zoo hauv huab cua kub suav nrog kev ua kom cov khoom txias ua ntej, siv dej sib tov txias, thiab nce qhov ntau ntawm cov tshuaj retarder los ntawm 0.1 txog 0.2 feem pua ​​rau txhua 5°C nce hauv qhov kub siab tshaj 20°C. Cov kab ncaj nraim ntawm sodium gluconate tshem tawm cov kev pheej hmoo teeb tsa flash txawm tias ntawm cov koob tshuaj siab, muab rau koj qhov sib txawv kev nyab xeeb yog tias cov xwm txheej hauv thaj teb tsis zoo dua li koj xav. Kev taug qab tas mus li nrog cov ntsuas kev loj hlob pab taug qab tus nqi ntawm dej thiab ua cov kev hloov pauv dynamic rau cov phiaj xwm tso chaw.

Kev Tshawb Fawb thiab Kev Tsim Kho Tshiab

Cov khoom sib xyaw ntse nrog cov sensors uas siv IoT thov kom koj saib seb cov pob zeb ua li cas hauv lub sijhawm tiag tiag thiab cia cov cuab yeej sib tov thiab cov cuab yeej tswj hwm qhov chaw sib tham nrog ib leeg wireless. Cov tswv yim tshiab no yuav ua rau nws muaj peev xwm hloov pauv qhov ntau ntawm cov tshuaj retarder xav tau raws li cov qauv kub tiag tiag es tsis txhob kwv yees. Cov tshuaj retarder tshiab uas siv nanotechnology tab tom ua kom cov dej hauv qib molecular tuaj yeem tswj tau meej dua. Cov neeg ua haujlwm hauv kev yuav khoom uas sib txuas lus nrog cov chaw tshiab tau txais kev nkag mus rau cov thev naus laus zis tshiab thaum ntxov. Qhov no ua rau lawv muaj qhov zoo dua thaum ua cov haujlwm nyuaj nrog cov qauv zoo nruj.

xaus

Los ntawm kev nkag siab txog cov tshuaj tiv thaiv kev ua haujlwm ntawm cov pob zeb ua vaj tse thiab xaiv cov khoom zoo, koj tuaj yeem hloov cov teeb meem nyuaj hauv kev tsim kho mus rau hauv cov haujlwm uas koj tuaj yeem ua tau. Kev ncua sijhawm ua rau cov khoom siv yooj yim dua rau kev ua haujlwm ntev dua, tiv thaiv lawv kom tsis txhob tawg thaum cua sov, tso cai rau lawv xa mus rau qhov deb ntev, thiab ua rau qhov chaw zoo dua hauv ntau qhov xwm txheej. Sodium gluconate yog ib qho piv txwv zoo ntawm cov thev naus laus zis ntxiv tam sim no vim tias nws yog bio-based, muaj ntau yam kev siv, thiab ua haujlwm tas li thaum tsis muaj kev phom sij rau ib puag ncig. Thaum cov thawj coj yuav khoom muab qhov tseem ceeb rau cov qauv siab, kev pom zoo kom zoo, thiab cov kab xa khoom txhim khu kev qha, lawv cov tuam txhab tau npaj zoo dua los ua tiav cov haujlwm loj hauv kev tsim kho thaum khaws cov nqi qis thiab lub hom phiaj ib puag ncig hauv siab.

FAQ

Siv cov tshuaj retarder puas ua rau lub zog ntawm cov pob zeb ua kom tsawg dua?

Tsis yog, thaum muab cov khoom sib xyaw kom raug, cov pob zeb uas qeeb qeeb feem ntau muaj lub zog sib zog zoo ib yam lossis siab dua 28-hnub li cov khoom sib xyaw uas tsis tau kho. Cov txheej txheem ziab qeeb qeeb ua rau cov qauv siv lead ua kom zoo dua thiab muaj qhov chaw khoob tsawg dua, uas ua rau nws kav ntev dua. Cov kev tshawb fawb tau qhia tias cov pob zeb uas qeeb qeeb tuaj yeem ua kom muaj zog dua 5-10% vim tias cov khoom me me tau ntim ua ke zoo dua thiab muaj qhov tawg me me tsawg dua.

Kuv yuav txiav txim siab li cas txog qhov ntau npaum li cas rau kuv txoj haujlwm?

Yuav siv ntau npaum li cas nyob ntawm qhov kub ntawm thaj chaw, hom cement, xav tau tos ntev npaum li cas, thiab nws ua haujlwm zoo npaum li cas nrog lwm cov khoom xyaw. Cov ntsiab lus pib feem ntau yog ntawm 0.2 thiab 0.5 feem pua ​​​​​​ntawm qhov hnyav ntawm cov cement. Cov no tuaj yeem hloov pauv nce lossis nqis nyob ntawm huab cua lossis kev siv lwm yam khoom siv cementitious. Txoj hauv kev tseeb tshaj plaws los xam qhov koob tshuaj yog ua cov khoom sim nrog cov ntaub ntawv hauv zos thiab cement. Cov neeg muag khoom txhim khu kev qha muab cov qauv dawb thiab kev pab los ntawm cov kws tshaj lij kom paub tseeb tias cov mis tshuaj zoo li lawv ua tau ua ntej lawv ua rau ntawm qhov loj.

Cov tshuaj uas tiv thaiv ib puag ncig puas zoo ib yam li cov tshuaj ib txwm muaj?

Cov tshuaj tiv thaiv kev puas tsuaj niaj hnub no uas siv cov khoom siv ua los ntawm cov pob zeb ua los ntawm cov pob zeb, xws li sodium gluconate, ua haujlwm tau zoo ib yam li lossis zoo dua li lwm cov tshuaj uas tsim los. Lawv kuj muaj cov teebmeem zoo dua rau ib puag ncig. Cov ntaub ntawv no ua tau raws li cov qauv kev tshawb fawb thiab ib puag ncig vim tias lawv tawg ntau dua 90% hauv 28 hnub thiab tsis tso cov tshuaj lom neeg phem tseg. Kev siv cov tshuaj chelator no zoo heev vim nws txuag tau 20-40% ntawm cov nqi piv rau cov tshuaj chelator sib tw yam tsis txo qhov zoo.

Koom tes nrog EverStar Group rau Cov Kev daws teeb meem Retarder Concrete Set High-Performance

EverStar Group npaj txhij los pab koj nrog koj cov haujlwm tsim kho los ntawm kev muab cov khoom siv sodium gluconate zoo thiab 14 xyoo ntawm kev paub hauv daim teb no. Nrog Peb Lub Hoobkas - tus qauv muab khoom ncaj qha, koj tuaj yeem txuas ncaj qha nrog cov chaw tsim khoom hauv Sab Qab Teb, Sab Hnub Tuaj, thiab Sab Qaum Teb Suav. Qhov no txiav tawm cov neeg nruab nrab thiab txuag koj 20–40% ntawm cov nqi piv rau lwm txoj hauv kev yuav khoom. Peb ua haujlwm nrog cov neeg siv khoom los ntawm ntau dua 50 lub tebchaws, xws li CEMEX, BASF, thiab cov kev pab cuam loj hauv tsoomfwv. Peb cov ntaub ntawv taug qab ntawm cov haujlwm nyuaj ua rau koj muaj kev thaj yeeb nyab xeeb.

Peb pab neeg kws tshaj lij muaj 24/7 los pab ntau hom lus, tsim cov qauv OEM/ODM, thiab muab cov qauv dawb rau koj kom koj tuaj yeem sim lawv qhov sib xws nrog koj cov pob zeb hauv zos. Daim ntawv pov thawj tag nrho xws li ASTM C494, EN 934, HALAL, KOSHER, REACH, thiab FDA ua raws li kev cai lij choj kom ntseeg tau tias cov khoom tau txais los ntawm cov neeg tswj hwm hauv txhua qhov chaw thoob ntiaj teb. Peb tuaj yeem ua ob qho tib si cov haujlwm sim thiab cov khoom lag luam loj txuas ntxiv vim tias qhov tsawg kawg nkaus xaj tsuas yog tsib tons thiab kev xa khoom yog nyob rau hauv peb txog xya hnub. Ua ib lub tuam txhab uas ua cov khoom siv pob zeb uas mob siab txog kev tshawb fawb ntsuab thiab kev tsis muaj pa roj carbon, peb muab 5% ntawm peb cov nyiaj tau los txhua xyoo rau kev tshawb fawb thiab kev txhim kho kom paub tseeb tias koj cov haujlwm ib txwm nyob ntawm ntug kev siv tshuab. Tiv tauj info@cneverstar.com tam sim ntawd los tham txog koj cov kev xav tau tshwj xeeb thiab tau txais cov lus qhia txog kev tsim khoom los ntawm peb pab neeg thev naus laus zis.

References

1. Mindess, S., Young, JF, thiab Darwin, D. (2003). Concrete: Cov Qauv, Cov Khoom, thiab Cov Khoom Siv , Tsab Thib 2. Pearson Education.

2. Ramachandran, VS (1995). Phau Ntawv Qhia Txog Cov Khoom Sib Xyaws Ua Los Ntawm Pob Zeb: Cov Khoom, Kev Tshawb Fawb thiab Kev Siv Tshuab , Tsab Luam Tawm Thib 2. William Andrew Publishing.

3. Lub Koom Haum Asmeskas rau Kev Ntsuas thiab Cov Khoom Siv. (2017). ASTM C494/C494M-17: Cov Qauv Txheem rau Cov Tshuaj Sib Xyaws rau Pob Zeb . ASTM International.

4. Neville, AM thiab Brooks, JJ (2010). Kev Siv Tshuab Ua Vaj Tse , Tsab Thib 2. Pearson Education Limited.

5. Taylor, HFW (1997). Cement Chemistry , Tsab Thib 2. Thomas Telford Publishing.

6. Pawg Neeg Saib Xyuas Kev Ua Qauv Hauv Tebchaws Europe. (2009). EN 934-2: Cov Tshuaj Sib Xyaws Rau Cov Pob Zeb, Cov Pob Zeb Qhuav, Thiab Cov Pob Zeb - Ntu 2: Cov Tshuaj Sib Xyaws Rau Cov Pob Zeb . CEN Brussels.

Kev tswj lub sijhawm teeb tsa ntawm cov pob zeb ua vaj tse ua rau muaj teeb meem tseem ceeb heev thaum npaj cov haujlwm loj lossis cov pob zeb ua vaj tse kub siab. Ua ib yam khoom ntxiv tshwj xeeb, cov tshuaj ua kom cov pob zeb ua vaj tse qeeb qeeb cov dej noo ntawm cov cement. Qhov no ua rau cov pob zeb ua vaj tse yooj yim dua rau kev ua haujlwm nrog thaum tseem khaws nws lub zog kawg. Kev pheej hmoo ntawm kev teeb tsa flash, kev sib koom ua ke txias, thiab kev poob qis thaum thauj mus los yog txhua yam teeb meem uas cov chaw sib tov ua tiav, cov neeg tsim kho vaj tse, thiab cov neeg ua precast thoob plaws Tebchaws Meskas yuav tsum tau daws. Cov thev naus laus zis no kho cov teeb meem no ncaj qha. Cov thawj coj kev yuav khoom thiab cov kws tshaj lij tuaj yeem txo cov khoom pov tseg, ua kom cov haujlwm sai dua, thiab xyuas kom meej tias cov qauv tseem muaj zog hauv cov chaw tsim kho nyuaj los ntawm kev paub tias cov khoom ntxiv no ua haujlwm li cas thiab xaiv cov mis kom raug.

Cov Tshuaj Tua Kab Uas Ua Rau Pob Zeb Tsis Txhob Ua Haujlwm Yog Dab Tsi, thiab Nws Ua Haujlwm Li Cas?

Cov tshuaj ntxiv ua haujlwm los ntawm kev ua kom qeeb qeeb ntawm cov theem pib ntawm cov cement cov dej tseem ceeb, tshwj xeeb tshaj yog cov tshuaj tiv thaiv sai ntawm C3S (tricalcium silicate) thiab C3A (tricalcium aluminate). Cov tshuaj no ua ib qho thaiv ib puag ncig cov cement uas tiv thaiv dej kom tsis txhob nkag mus rau lawv ib ntus thiab ua kom qeeb qeeb ntawm cov txheej txheem exothermic uas ua rau cement tawv. Qhov no ua rau cov yas kav ntev dua, uas muab sijhawm ntau rau cov neeg ua tiav los tso, tawv, thiab kho qhov chaw.

Chemical Composition thiab Mechanism

Feem ntau cov kua qaub hydroxycarboxylic yog cov yam tseem ceeb hauv cov tshuaj retardation niaj hnub no. Peb cov tshuaj sodium gluconate-based concrete retarder yog ib qho piv txwv ntawm cov thev naus laus zis no. Nws muaj cov kab ncua sij hawm uas nyob li qub rau 2-4 teev ntawm qhov ntau ntawm 0.1% hauv qhov kub ntawm 30 ° C thiab 35 ° C. Cov tshuaj bio-based no zoo dua li lignosulfonate lossis lwm yam qab zib ua ntej vim nws muaj kev ua tau zoo linear, dose-responsive uas tau ua pov thawj los ntawm kev sim isothermal calorimetry. Qhov no txhais tau tias cov engineers tuaj yeem hloov cov koob tshuaj yam tsis muaj kev cuam tshuam kev nrawm lossis kev poob zog ntev.

Cov molecule no tiv thaiv kev tsim cov calcium silicate hydrate crystals rau lub sijhawm luv luv los ntawm kev rub thiab tuav cov calcium ions ntawm qhov sib cuag ntawm cement-water. Cov dej noo ib txwm pib dua tom qab ob peb teev ntawm qhov kev tiv thaiv ploj mus, feem ntau ua rau cov khoom siv crystalline tawv dua li cov sib tov tsis muaj zog. Qhov no yog qhov laj thawj vim li cas cov pob zeb uas tau sib xyaw zoo feem ntau muaj lub zog nias siab dua 28 hnub, uas tawm tsam kev ntseeg nrov tias kev teeb tsa qeeb ua rau cov pob zeb tsis ruaj khov.

Cov Kev Ntsuas Kev Ua Tau Zoo thiab Cov Lus Qhia Txog Kev Siv Tshuab

Cov tshuaj tswj hwm zoo yuav tsum ua tau raws li cov kev cai nruj. Peb cov zaub mov qib kev siv tshuab yog cov hmoov dawb, crystalline uas yog ≥98.0% ntshiab. Nws ua rau cov chloride hauv qab 0.05% kom cov reinforcements tsis txhob xeb, uas yog qhov tseem ceeb rau cov haujlwm tsim kho uas yuav kav ntev li 50-100 xyoo. Cov tshuaj 10% muaj pH ntawm 6.2 thiab 7.8, uas txhais tau tias nws tuaj yeem sib xyaw nrog cov polycarboxylate ether superplasticizers tam sim no uas feem ntau siv rau hauv cov pob zeb ua haujlwm siab.

Qee qhov txiaj ntsig tseem ceeb ntawm kev tshawb fawb yog tias nws yaj hauv dej ntau dua 99% ntawm lub sijhawm, uas txhais tau tias nws kis tau zoo txawm tias nyob rau hauv cov pob zeb sib xyaw uas muaj dej tsawg, thiab nws poob tsawg dua 0.5% ntawm nws qhov hnyav thaum nws qhuav, uas txhais tau tias nws yuav ua haujlwm tib yam hauv txhua qib av noo. Cov hlau hnyav nyob qis dua 10 feem ib lab rau cov hlau lead, uas txhawb nqa ob qho tib si rau zaub mov thiab kev siv hauv tsev qhov twg yuav tsum ua raws li cov cai nruj.

Hom thiab Daim Ntawv Thov ntawm Cov Tshuaj Retarder Concrete

Cov thev naus laus zis tiv thaiv kev laus siv rau hauv kev lag luam tsim kho vaj tse hauv ob txoj kev sib txawv. Txhua tus ua tau raws li qhov xav tau ntawm txoj haujlwm sib txawv thiab muab cov txiaj ntsig sib txawv rau cov neeg cog lus thiab cov neeg tsim khoom sib xyaw ua tiav.

Cov Tshuaj Tiv Thaiv Hom Tshuaj Rau Cov Pob Zeb Loj

Cov tshuaj siv los ua kom cov pob zeb tsis txhob lo rau hauv cov pob zeb sib xyaw ua ke yuav tswj tau cov dej noo hauv cov pob zeb sib xyaw thaum ntxiv rau hauv cov chaw ua haujlwm. Txoj kev no yog qhov tsim nyog rau kev tso cov pob zeb ntau uas tuab dua 1 cubic meter, xws li lub hauv paus pas dej, cov ntoo choj, lossis cov pob zeb raft. Lub qhov rais ntev dua tswj qhov kub ntawm cov dej noo kom tiv thaiv kev tawg ntawm cov cua sov. Qhov no cia cov khoom nqa rov ua dua los sib txuas ua ke es tsis txhob ua rau cov pob qij txha txias tsis muaj zog.

Cov neeg ua haujlwm hauv kev tsim kho vaj tse uas ua haujlwm ntawm txoj kev khiav ntawm tshav dav hlau thiab cov kab hauv qhov av nyiam qhov no yooj yim npaum li cas rau lawv txoj kev npaj. Lub sijhawm ua haujlwm ib txwm muaj ntawm 90 feeb tuaj yeem ntev mus txog 4-6 teev los suav nrog cov khoom xws li kev sib tsoo tsheb, cov khoom siv tawg, thiab qhov nyuaj ntawm kev sib koom tes ua haujlwm ntawm cov chaw tsim kho hauv nroog. Cov thev naus laus zis kuj tseem txo qhov xav tau kev tso cov pob zeb pov tseg thaum muaj xwm txheej ceev, uas ua rau cov khoom siv pov tseg thiab ua rau muaj kev ncua sijhawm uas raug nqi $ 500 txog $ 2,000 ib cubic yard.

Cov Tshuaj Tiv Thaiv Qhov Nto Rau Cov Khoom Siv Uas Pom Tseeb

Cov tshuaj uas ntxiv rau saum npoo tsuas yog ua rau qeeb qeeb rau sab saud 3-8 hli ntawm daim tawv nqaij pob zeb xwb. Cov khoom sib tov seem tshuav kom khov li qub. Thaum sab hauv muaj zog txaus, cov neeg ua haujlwm ntxuav cov txheej uas tau ncua, qhia txog cov khoom sib xyaw uas xav tau rau cov pob zeb ua vaj tse, txoj kev taug kev, lossis cov choj uas yuav tsum tau txuas nrog cov dej tom qab.

Cov txheej txheem ob kauj ruam no daws tau qhov teeb meem uas tau muaj ntev los lawm hauv kev tsim cov pob zeb ua ntej: cov nqi hloov pauv yuav tsum tau sib npaug nrog cov qauv rau qhov zoo nkauj. Thaum piv rau cov txheej txheem txhuam tshuab, txoj kev no cia cov neeg tsim khoom tshem tawm cov qauv raws sijhawm thaum tseem tau txais qhov roughness ntawm qhov chaw xav tau. Qhov no ua rau cov khoom tsim tawm ntawm qhov chaw ntau ntxiv los ntawm 20-30%.

Daim Ntawv Thov Thoob Plaws Ib puag ncig

Nyob rau hauv cov xeev sab qab teb xws li Texas, Arizona, thiab Florida, qhov chaw uas nws kub, kev tswj hwm qhov kev ncua sijhawm yog qhov yuav tsum tau ua rau kev ua vaj tse hauv huab cua kub. Thaum qhov kub tsis tshaj 30 ° C lossis siab dua, qhov nrawm ntawm kev ua pa tuaj yeem ua rau cov khoom nruj ua ntej nws tau sib sau ua ke tag nrho. Peb cov sodium gluconate version ruaj khov dua ntawm qhov kub siab dua li lwm cov lignosulfonate. Nws ua haujlwm zoo ib yam li kev ncua kev loj hlob yam tsis tas yuav nce cov koob tshuaj ntau ntxiv rau txoj kev uas kim heev thiab ua rau muaj kev pheej hmoo ntawm kev siv ntau dhau.

Ntawm qhov tod tes, cov khoom uas yuav siv rau hauv huab cua txias qis dua 10 ° C xav tau cov koob tshuaj qis dua lossis cov khoom sib xyaw sib txawv ntawm cov tshuaj ua kom nrawm. Peb muab rau peb cov pab pawg txhawb nqa kev txawj ntse hauv cheeb tsam cov cuab yeej ntsuas uas suav nrog hom cement (Hom I/II Portland, cov cement sib xyaw nrog cov tshauv ya lossis slag), qhov kub ntawm pob zeb, thiab qhov xav tau ntawm qhov project. Lub peev xwm los hloov kho qhov no tau pab tau tshwj xeeb rau cov tuam txhab EPC hauv North America uas yog tus saib xyuas cov project nrog huab cua sib txawv.

Kev Sib Piv Cov Tshuaj Uas Ua Rau Cov Khoom Siv Pob Zeb Tsis Txhob Txav Mus Los: Xaiv Qhov Zoo Tshaj Plaws Rau Koj Txoj Haujlwm

Kev yuav khoom nyob ntawm seb puas muaj dab tsi ua rau ib qho kev ua tau zoo txawv ntawm lwm qhov thiab qhov ntawd cuam tshuam li cas rau kev siv tau luv luv thiab cov txiaj ntsig ntawm cov qauv mus sij hawm ntev. Tsis yog txhua lub tshuab ua haujlwm qeeb qeeb ua haujlwm tib yam, thiab kev xaiv cov khoom uas tsis zoo tshaj plaws tuaj yeem ua rau lub sijhawm ua haujlwm thiab cov nqi poob qis.

Kev Ntsuas Kev Ua Tau Zoo thiab Kev Sib Xws

Yuav kom cov tshuaj sib xyaw ua haujlwm tau, lawv yuav tsum tau kwv yees tau, uas txhais tau tias lub sijhawm teeb tsa tuaj yeem kwv yees tau meej txawm tias qhov chaw hloov pauv. Peb daim ntawv qhia tshwj xeeb ua qhov no nrog kev sib raug zoo ntawm cov koob tshuaj thiab kev teb uas yog kab ncaj. Qhov no txhais tau tias rau txhua qhov nce 0.05% ntawm cov tshuaj, cov txiaj ntsig kav ntev li 60 feeb ntxiv yam tsis nres kiag li. Qhov no txawv ntawm cov tshuaj qeeb uas muaj suab thaj, uas tuaj yeem ua haujlwm tsis yog kab ncaj, uas tuaj yeem ua rau tsis ncua sijhawm txaus lossis cov xwm txheej teeb tsa ntev heev.

Economic thiab Environmental Considerations

Lwm yam tseem ceeb uas yuav tsum tau saib xyuas yog seb cov khoom no ua haujlwm zoo li cas nrog lwm cov khoom siv cementitious. Kev ntxiv cov tshauv ya lossis cov hmoov av silica rau hauv cov khoom sib tov hloov nws txoj kev ua haujlwm piv rau cov tshuab uas tsuas yog siv Portland cement. Peb siv ASTM C403 txoj kev tiv thaiv kev nkag mus los sim txhua tus neeg siv khoom cov cement thiab SCM sib tov kom paub tseeb tias lawv sib xws. Ua li no, peb tuaj yeem muab cov ntaub ntawv ua tau zoo uas tau ua pov thawj los ntawm cov kws tsim qauv sib tov es tsis yog cov lus thov tsis meej ntawm cov khoom.

Tus nqi tag nrho ntawm kev muaj tswv cuab suav nrog ntau dua li tus nqi yuav khoom xwb. Nws kuj suav nrog cov nqi tshuaj, cov nqi xa khoom, thiab kev ua raws li ib puag ncig. Yog tias koj piv rau kev ua tau zoo ntawm peb cov tshuaj sodium gluconate bio-based rau cov kev xaiv tsim khoom xws li EDTA lossis NTA, nws txuag koj 20–40% ntawm cov nqi. Lub molecule lub 60–70% me dua carbon footprint ua tau raws li cov qauv rau LEED v4.1 credits thiab cov tuam txhab ESG cog lus, uas tab tom dhau los ua qhov tseem ceeb rau cov haujlwm tsim kho vaj tse uas tsoomfwv them rau.

Cov Kev Dais Teeb Meem Zoo Rau Ib Puag Ncig thiab Cov Qauv Kev Lag Luam

Vim tias cov khoom muaj ob qho tib si qib zaub mov thiab qib kev siv tshuab ( FCC, USP, BP, HALAL, KOSHER), cov neeg faib khoom tuaj yeem pab ob qho tib si kev lag luam hauv tsev thiab kev lag luam zaub mov / tshuaj. Qhov no ua rau kev tswj hwm cov khoom muag yooj yim dua thiab txo qis qhov yuav tsum tau ua tus lej xaj tsawg kawg nkaus. Qhov kev ywj pheej no tau pab tau tshwj xeeb rau cov neeg muag tshuaj uas xav txhim kho lawv txoj kev sib raug zoo nrog cov neeg muag khoom thiab ua kom cov txheej txheem yuav khoom zoo dua.

Cov pab pawg yuav khoom uas tsom mus rau kev ruaj khov tam sim no muab qhov hnyav dua rau cov zaub mov txawv uas tawg sai thiab ua tau raws li cov qauv OECD 301E. Peb cov lus teb tawg ntau dua 90% hauv 28 hnub, txhawb nqa EU Ecolabel thiab Nordic Swan daim ntawv pov thawj rau cov kev cai ib puag ncig. Qhov no txawv ntawm cov tshuaj retarders qub uas ua los ntawm phosphates, uas nyob hauv dej hauv av thiab ua rau muaj kev pheej hmoo ntawm eutrophication hauv cov cheeb tsam uas rhiab heev rau cov chaw tsim kho.

Kev Nkag Siab Txog Kev Yuav Khoom: Yuav Ua Li Cas Yuav Cov Tshuaj Tiv Thaiv Pob Zeb Rau Kev Siv Hauv Kev Lag Luam

Thaum nrhiav cov tshuaj ntxiv rau kev ncua sijhawm, koj yuav tsum nrhiav kev sib npaug ntawm kev ua tau zoo ntawm kev siv tshuab, kev ruaj khov ntawm cov khoom xa tuaj, thiab tag nrho cov nqi tsaws. Qhov no tseem ceeb heev rau cov tuam txhab uas tswj hwm ntau qhov chaw ua haujlwm lossis ntau yam khoom siv txhua xyoo.

Kev ntsuas tus neeg muab khoom ntsuas

Cov ntawv pov thawj rau kev tsim khoom yog thawj kauj ruam hauv kev nrhiav kev ntseeg siab. Peb cov chaw tsim khoom tau txais kev pom zoo los ntawm ISO 22000 thiab FSSC 22000, thiab peb siv kev tswj cov txheej txheem suav lej thiab cov txheej txheem kev ruaj ntseg zoo kom paub tseeb tias txhua pawg yog tib yam. Daim Ntawv Pov Thawj Kev Tshuaj Xyuas (COA) suav nrog txhua pob khoom. Nws teev 18 yam zoo, xws li kev huv, qib chloride, cov hlau hnyav, thiab kev ruaj khov pH.

Kev nkag mus rau hauv cheeb tsam muaj feem cuam tshuam loj heev rau txoj kev teem sijhawm ntawm cov haujlwm. Nrog peb lub Hoobkas uas tau muab tso rau hauv thaj chaw tsim khoom sab qab teb, sab hnub tuaj, thiab sab qaum teb thiab muaj cov khoom muag ntau dua 500 metric tons, peb tuaj yeem cog lus tias yuav xa khoom li 7 txog 10 hnub thoob plaws Tebchaws Meskas. Cov khoom siv no tshem tawm qhov kev ncua sijhawm 4-6 lub lis piam uas tsuas yog siv cov peev txheej txawv teb chaws xwb. Qhov no tiv thaiv cov haujlwm kim kom tsis txhob raug nres thaum muaj kev thov nce siab tam sim ntawd.

Qhov Tsawg Kawg Nkaus Yuav Tsum Muaj Thiab Cov Qauv Nqe

Peb paub tias qhov ntau ntawm cov khoom siv ntxiv rau cov pob zeb siv hloov pauv ntau heev nyob ntawm seb thaum twg txoj haujlwm pib thiab qhov kev thov hloov pauv ntau npaum li cas nrog rau lub caij. Tus lej xaj tsawg kawg nkaus li ntawm 5 tons ua haujlwm rau ob qho tib si cov lag luam nruab nrab thiab cov neeg tsim kho vaj tse loj yam tsis ua rau lawv them nyiaj ntau dhau los khaws cov khoom muag. Cov kev xaiv thauj khoom loj (20–25 tons) muab kev txuag ntxiv rau cov neeg siv khoom uas yuav ntau, thaum 25 kg hnab thiab cov thawv ntim khoom nruab nrab (IBCs) pab cov neeg tsim khoom precast uas xav tau ntau yam khoom SKUs sib txawv.

Kev Sib Piv Txog Kev Txhawb Nqa Kev Txawj Ntse thiab Kev Pabcuam Tom Qab Muag Khoom

Nrog rau tus nqi ncaj qha los ntawm lub Hoobkas, tsis muaj kev nce nqi rau cov neeg faib khoom, uas feem ntau nce tus nqi los ntawm 20–40%. Qhov no daws qhov teeb meem kev yuav khoom ntawm tus nqi nruab nrab. Cov nqi cog lus ntau npaum li cas muab khoom plig rau cov ntawv cog lus yuav khoom txhua xyoo thaum tseem ua kom muaj kev ywj pheej los ntawm kev muab cov kev pabcuam tseeb txhua peb lub hlis uas hloov kho rau kev siv tiag tiag. Cov qauv no tau txais txiaj ntsig tshwj xeeb los ntawm cov tuam txhab EPC uas cov qauv kev thov raws li cov haujlwm.

Ntau tshaj li kev xa khoom xwb yog qhov xav tau los ua kom qhov kev sib tov ua tiav. Peb pab neeg txhawb nqa kev txawj ntse thoob ntiaj teb 24/7 pab nrog kev xam qauv sib tov, hloov pauv cov koob tshuaj ntawm qhov chaw, thiab kho cov teeb meem uas tshwm sim thaum lub teeb tsis ua haujlwm raws li nws yuav tsum tau ua. Peb muab cov qauv dawb (5–10 kg) rau kev lees paub cov khoom sim nrog peb cov neeg siv khoom cov pob zeb hauv zos thiab cov chaw cement. Qhov no yog ib qho kev pabcuam tseem ceeb vim tias cov tshuaj lom neeg ntawm cov khoom siv raw tuaj yeem sib txawv ntawm qhov chaw mus rau qhov chaw, uas tuaj yeem cuam tshuam rau qhov ua haujlwm zoo ntawm cov admixture.

Kev Nyab Xeeb ntawm Cov Tshuaj Siv Rau Cov Khoom Siv Uas Ua Rau Pob Zeb Tsis Txhob Tawg, Lub Sij Hawm Khaws Cia, thiab Cov Kev Xyaum Zoo Tshaj Plaws

Thaum cov tshuaj admixtures siv rau ntawm qhov ntsuas kev lag luam, lawv yuav tsum tau khaws cia thiab tuav hauv txoj hauv kev uas tiv thaiv ob qho tib si kev noj qab haus huv ntawm cov neeg ua haujlwm thiab kev ua tau zoo ntawm cov khoom thoob plaws hauv cov saw hlau.

Cov Txheej Txheem Kev Tswj Xyuas thiab Kev Tiv Thaiv Cov Neeg Ua Haujlwm

Piv rau lwm cov tshuaj, cov tshuaj sodium gluconate-based concrete retarder muaj kev pheej hmoo qis tshaj plaws. Vim tias nws yog hmoov khov, nws tsis xeb zoo li cov kua qaub ua, thiab nws cov pH ze-nruab nrab (6.2–7.8 hauv cov kua) ua rau koj cov tawv nqaij thiab qhov muag tsis khaus zoo li cov tshuaj alkaline ua. Cov lus qhia txog cov khoom siv kev nyab xeeb tus kheej suav nrog cov ntaub npog ntsej muag rau kev tuav cov hnab thiab hnab looj tes rau kev sib cuag ntev ntawm daim tawv nqaij. Cov neeg ua haujlwm hauv batching twb paub cov cai no lawm.

Cia Tej yam kev mob thiab Txee lub neej Management

Cov kauj ruam rau kev tswj qhov nchuav yog tib yam li cov rau lwm cov tshuaj qhuav ntxiv. Vim tias cov khoom yaj yooj yim hauv dej, qhov yuam kev tuaj yeem ntxuav thiab siv dua yog tias lawv tsis muaj kuab paug. Qhov no txo ​​qhov poob ntawm cov khoom. Ib puag ncig tsis raug cuam tshuam ntau vim tias cov tshuaj lom neeg tawg sai. Txawm li cas los xij, cov nchuav loj ze ntawm cov dej yuav tsum tau tswj raws li cov txheej txheem kev siv tshuaj ib txwm kom tsis txhob muaj kev hloov pauv pH hauv thaj chaw.

Yog tias khaws cia kom zoo, cov khoom yuav siv tau ntev li 24 txog 36 lub hlis ua ntej nws tsis ua haujlwm. Rau kev khaws cia, qhov kub thiab txias yuav tsum nyob nruab nrab ntawm 5°C thiab 35°C thiab qhov av noo yuav tsum nyob qis dua 65% kom tiv thaiv kev nqus dej uas tuaj yeem ua rau pob. Peb xav kom tsis txhob muab ntau tshaj tsib lub hnab tso rau saum lub pallet (siv 25 kg ntim) thiab tig koj cov khoom sau ib hlis ib zaug kom paub tseeb tias cov khoom qub tshaj plaws khiav tawm ua ntej.

Kev Cuam Tshuam rau Lub Sijhawm Kho thiab Kev Ruaj Khov Mus Ntev

Cov hmoov av cement thiab lwm yam khoom me me los ntawm lub tshuab sib tov tsis tuaj yeem nkag mus rau hauv cov thawv kaw. Tom qab qhib lawm, cov hnab yuav tsum kaw dua lossis cov khoom hauv yuav tsum tau tsiv mus rau cov thawv uas yuav tsis ntub. Kev ntsuam xyuas zoo, uas tuaj yeem yooj yim xws li kev kuaj xyuas pH thiab kev huv ntawm cov khoom nrog cov cuab yeej kuaj hauv chav kuaj, tuaj yeem lees paub tias cov khoom tseem zoo rau kev siv txawm tias nws laus zuj zus. Txawm li cas los xij, kev khaws cia kom zoo feem ntau ua rau cov khoom ua raws li txhua yam lus qhia rau lub sijhawm khaws cia tag nrho.

Ib qho teeb meem kev siv tshuab uas feem ntau yuav daws tau los ntawm kev xam pom qhov sib txuas ntawm kev qeeb qeeb thiab kev loj hlob ntawm lub zog. Cov txheej txheem ntub dej kawg siv sijhawm tib yam li cov pob zeb tsis qeeb qeeb, tab sis cov txheej txheem teeb tsa thawj zaug siv sijhawm ntxiv ob txog plaub teev ntawm cov koob tshuaj ib txwm muaj. Lub zog xya hnub feem ntau ncav cuag 70-75% ntawm 28-hnub tus nqi, uas txaus rau feem ntau ntawm kev siv cov qauv uas xav tau kev tshem tawm thaum ntxov lossis tom qab kev nruj.

xaus

Thaum koj paub siv cov thev naus laus zis ncua sijhawm, kev tso cov pob zeb ua vaj tse yuav tsis yog kev sib tw nrog lub sijhawm thiab ua rau muaj kev tswj hwm, tsom mus rau qhov zoo. Cov tshuaj sib xyaw ua ke ntawm cov tshuaj sodium gluconate ua rau cov pob zeb ua vaj tse qeeb dua, kev lav phib xaub rau ib puag ncig, thiab kev siv nyiaj tsawg. Lawv daws cov teeb meem tseem ceeb uas cov thawj coj kev yuav khoom, cov kws tshaj lij, thiab cov neeg teem sijhawm ua haujlwm muaj tib lub sijhawm. Cov tshuaj no zoo meej rau cov neeg ua vaj tse, cov neeg ua khoom sib xyaw ua tiav, thiab cov chaw tsim khoom precast uas yuav tsum tau daws cov haujlwm uas nyuaj dua vim tias nws muaj cov kab nkhaus qeeb uas kwv yees tau, ua haujlwm nrog cov txheej txheem pob zeb tam sim no, thiab tuaj yeem tau ntawv pov thawj hauv ob txoj kev sib txawv. Cov tuam txhab tuaj yeem tshem tawm cov teeb meem zoo thiab muab cov teeb meem uas hem kev ua tiav ntawm qhov project los ntawm kev ua haujlwm nrog cov neeg muab kev pabcuam uas muab cov qauv kev tsim khoom qib siab, kev xa khoom sai, thiab kev pabcuam txhawb nqa tag nrho.

FAQ

Kev siv tshuaj ntau dhau puas yuav ua rau cov pob zeb khov mus tas li?

Yog koj siv tshuaj ntau dhau heev, theem yas yuav kav ntev li ob peb hnub, tab sis tsuav yog cov pob zeb tseem ntub, nws yuav thaum kawg mus txog nws lub zog tag nrho. Raws li kev tshawb fawb, kev ncua dej feem ntau ua rau cov qauv me me uas muaj zog kawg siab dua li cov khoom sib xyaw tswj.

Puas siv tau cov tshuaj retarders nrog cov superplasticizers ua ke hauv tib qho kev sib xyaw?

Nws ua haujlwm zoo nrog polycarboxylate ether superplasticizers, tab sis yuav tsum tau ua cov pawg sim kom paub tseeb tias qhov sib tov zoo khaws cov qauv slump thiab teeb tsa kom raug. Qee cov qauv muaj cov txiaj ntsig synergistic, uas txhais tau tias tsawg dua ntawm ob qho admixtures yog qhov xav tau.

Qhov kub thiab txias ntawm ib puag ncig cuam tshuam li cas rau qhov yuav tsum tau txhaj tshuaj?

Muaj kev sib txuas ntawm qhov kub thiab kev qeeb. Rau txhua 10°C nce hauv qhov kub ntawm cov pob zeb, tus nqi ntawm cov dej noo yuav nce ob npaug. Kev hloov pauv ntawm 0.03–0.05% ib 5°C ua rau lub sijhawm ua haujlwm zoo ib yam ntawm cov chaw uas muaj ntau yam xwm txheej sib txawv. Txawm li cas los xij, qhov xav tau tseeb yog nyob ntawm seb cov cement teb li cas thiab cov kev xav tau ntawm qhov project.

Koom tes nrog EverStar Group rau Kev Muab Tshuaj Txhim Kho Cov Khoom Siv Uas Ua Rau Cov Pob Zeb Tsis Txhob Ruaj Ntseg

EverStar Group tau ua cov tshuaj admixtures tau 14 xyoo thiab tuaj yeem pab cov pab pawg yuav khoom nrhiav tau cov tshuaj siv los tiv thaiv cov pob zeb ua vaj tse. Cov tshuaj sodium gluconate uas yog ≥98% ntshiab yog ua nyob rau hauv cov chaw uas tau txais kev pom zoo los ntawm ISO 22000. Cov chaw no kuj ua tau raws li cov kev cai ntawm ASTM C494, EN 934, FDA, HALAL, thiab KOSHER. Peb khaws ntau dua 500 metric tons ntawm cov khoom muag hauv cov nroj tsuag uas tau muab tso ze ntawm cov chaw nres nkoj loj. Qhov no cia peb xa cov xaj txheem hauv peb hnub thiab ua cov tshuaj tshwj xeeb uas ua haujlwm nrog cov tshuaj cement lossis cov chaw nyob ntug dej hiav txwv uas muaj sulfate ntau hauv koj cheeb tsam hauv tsib txog xya hnub.

Peb cov kev pabcuam OEM/ODM tsis yog tsuas yog muab cov khoom xwb; peb cov pab pawg kws tshaj lij muab kev kuaj dawb nrog koj cov khoom sib xyaw hauv zos, kev pab 24/7 hauv ntau hom lus, kev cob qhia hauv tsev, thiab cov ntaub ntawv sau tag nrho nrog cov cuab yeej sib tov thiab cov yeeb yaj kiab siv. Koj tuaj yeem tso qhov kev txiav txim rau tsawg li 5 tons, thiab koj tuaj yeem xaiv los ntawm ntau hom kev ntim khoom, xws li hnab 25 kg, IBCs, thiab cov tsheb thauj khoom loj. Yog tias koj yuav ncaj qha los ntawm lub Hoobkas, koj tuaj yeem txuag tau 20–40% piv rau kev yuav los ntawm cov neeg faib khoom. Xa email rau info@cneverstar.com kom tau txais cov qauv lossis tham txog seb peb cov khoom siv bio-based, yooj yim rov ua dua tshiab tuaj yeem pab koj ua kom koj qhov project tom ntej zoo dua thaum tseem pab koj ua tiav koj lub hom phiaj kev ruaj khov.

References

1. Ramachandran, VS, Phau Ntawv Qhia Txog Kev Sib Xyaws Ua Los Ntawm Pob Zeb: Cov Khoom, Kev Tshawb Fawb, thiab Kev Siv Tshuab, Tsab Thib Ob, Noyes Publications, 1995.

2. Kosmatka, SH, Kerkhoff, B., thiab Panarese, WC, Tsim thiab Tswj Cov Khoom Sib Xyaws Ua Los Ntawm Pob Zeb, Tsab Ntawv Tshaj Tawm Thib 14, Portland Cement Association, 2008.

3. Neville, AM, Cov Khoom ntawm Cov Pob Zeb, Tsab Thib Tsib, Pearson Education Limited, 2011.

4. ASTM C494 / C494M-19, Cov Qauv Txheem rau Cov Tshuaj Sib Xyaws rau Pob Zeb, ASTM International, West Conshohocken, PA, 2019.

5. Pawg Neeg Saib Xyuas ACI 212, Daim Ntawv Qhia Txog Cov Tshuaj Sib Xyaws Rau Cov Pob Zeb Ua Vaj Tse (ACI 212.3R-16), Lub Koom Haum Pob Zeb Ua Vaj Tse American, Farmington Hills, MI, 2016.

6. Jolicoeur, C. thiab Simard, MA, Kev Sib Cuam Tshuam ntawm Cov Tshuaj Lom Zem thiab Cov Cement: Cov Physico-Tshuaj Lom Zem thiab Cov Tswv Yim Txog Lub Cev, Cement thiab Concrete Composites, Vol. 20, 1998.

Cov tshuaj tiv thaiv pob zeb yog cov tshuaj ntxiv tshwj xeeb uas ua rau cov txheej txheem dej hauv cov khoom siv cementitious qeeb. Qhov no ua rau cov pob zeb ua haujlwm tau ntev dua thiab tiv thaiv nws kom tsis txhob khov sai dhau. Cov khoom ntxiv no tam sim no tsim nyog rau kev tsim kho niaj hnub, tshwj xeeb tshaj yog rau cov haujlwm loj uas yuav tsum tau muab tso rau hauv qhov chaw ntev. Cov tshuaj ntxiv no ua rau cov theem pib thiab theem kawg qeeb yam tsis cuam tshuam rau kev ruaj khov ntawm cov qauv mus sij hawm ntev. Qhov no cia cov neeg cog khoom ua haujlwm nrog cov dej ntws nyuaj hauv cov xwm txheej nyuaj, xws li ntawm txoj kev loj kub lossis hauv cov qauv vaj tse uas xav tau lub sijhawm tseeb thiab kev ua tiav zoo meej.

Cov Tshuaj Tiv Thaiv Pob Zeb Yog Dab Tsi Thiab Lawv Ua Haujlwm Li Cas?

Txhais cov tshuaj admixtures qeeb hauv kev tsim kho niaj hnub

Cov tshuaj admixtures qeeb yog ib pawg ntawm cov tshuaj molecules uas tau ua los tiv thaiv cov txheej txheem thaum ntxov uas ua rau cement tawv. Cov neeg sawv cev no ncua lub sijhawm induction, uas yog qhov tseem ceeb vim tias nws yog thaum lub sijhawm no uas cov pob zeb tshiab tseem tuaj yeem ua tau thiab yooj yim rau kev ua haujlwm nrog. Cov txheej txheem cuam tshuam nrog kev lo rau ntawm cov nplaim ntawm cov cement me me thiab tsim cov teeb meem uas tiv thaiv dej thiab cement los ntawm kev sib cuam tshuam rau lub sijhawm luv luv. Qhov kev ncua sijhawm tswj hwm no tiv thaiv kev tsim cov calcium silicate hydrate crystals thaum lub sijhawm tseem ceeb tso. Qhov no muab sijhawm txaus rau kev sib sau ua ke, ua tiav, thiab xa khoom yam tsis txo qis qhov kawg ntawm lub zog compressive.

Cov Tshuaj Lom Zem thiab Kev Sib Cuam Tshuam ntawm Hydration

Cov tshuaj hydroxycarboxylic acids, lignosulfonates, lossis cov tshuaj phosphate-based siv rau hauv feem ntau cov zaub mov txawv. Cov qauv retarder tam sim no yog qhia los ntawm sodium gluconate, ib qho piv txwv ntawm cov tshuaj retarder concrete , ib qho hmoov dawb uas yog ≥98.0% ntshiab thiab muaj tus lej CAS 527-07-1. Nws qeeb qeeb qhov kev teeb tsa ntawm cov pob zeb rau 2 txog 7 teev hauv txoj kev uas tuaj yeem kwv yees tau siv cov duab teb rau koob tshuaj uas yog ntawm 0.05% thiab 0.15% los ntawm qhov hnyav. Qhov no tshem tawm cov kev pheej hmoo flash-set uas tuaj nrog cov kev xaiv qub raws li citric acid lossis qab zib. Cov tshuaj 10% muaj pH ntau ntawm 6.2–7.8, uas ua rau nws sib xws nrog Portland cement chemistry. Nws kuj muaj qib chloride qis (≤0.05%), uas ua rau cov hlau reinforcing tsis txhob xeb, uas yog ib qho tseem ceeb rau kev ruaj khov mus sij hawm ntev ntawm cov khoom siv.

Cov Txheej Txheem Siv Tau Rau Cov Pab Pawg Hauv Chaw

Yuav siv cov tshuaj tiv thaiv kev sib xyaw ua ke, lawv yuav tsum tau sib xyaw kom zoo rau hauv cov pob zeb ntawm lub tshuab sib tov lossis lub tshuab sib tov hauv tsev. Ua ib feem ntawm kev tswj xyuas zoo, ASTM C403 cov txheej txheem kuaj yuav tsum tau ua raws. Cov txheej txheem no ntsuas lub sijhawm teeb tsa los ntawm kev nkag mus tsis kam. Cov kws ua haujlwm xam cov nyiaj los ntawm kev saib qhov kub thiab txias, hom cement, thiab ntev npaum li cas yuav tsum tau tos. Txhawm rau kom paub tseeb tias cov khoom sib xyaw ua ke nrog Polycarboxylate Ether (PCE) superplasticizers sib xws, kev sim khiav yuav tsum tau ua kom paub tseeb tias rheological ruaj khov. Cov ntaub ntawv xws li Daim Ntawv Pov Thawj Kev Tshawb Fawb (COA), Cov Ntawv Qhia Txog Kev Nyab Xeeb (SDS), thiab Cov Ntawv Qhia Txog Kev Siv Tshuab (TDS) pab nrog kev xaiv yuav khoom los ntawm kev ua kom paub tseeb tias cov khoom specs phim cov kev xav tau ntawm qhov project thiab cov qauv txawv teb chaws rau kev ua raws li.

Hom Tshuaj Tiv Thaiv Pob Zeb Thiab Lawv Cov Kev Siv Zoo Tshaj Plaws

Cov Qauv Ntuj piv rau Cov Qauv Khoom Siv

Cov tshuaj tiv thaiv kev puas tsuaj rau cov pob zeb ua los ntawm cov ntoo qab zib thiab lignosulfonates, thiab lawv ua haujlwm zoo thiab tsis kim heev rau kev siv txhua hnub. Cov tshuaj hloov pauv, xws li sodium gluconate, muaj kev sib xws thiab txhim khu kev qha dua. Qhov thib ob muaj cov kev cai lij choj, xws li kev poob thaum ziab tsawg dua 0.5%, cov ntsiab lus sulfate tsawg dua 0.05%, thiab cov hlau hnyav (Pb) tsawg dua 10 ppm. Cov kev cai no ua kom ntseeg tau tias txhua pawg yog tib yam, uas yog qhov tseem ceeb rau kev tswj xyuas zoo hauv cov haujlwm loj. Cov mis tshuaj kuj ruaj khov dua thaum qhov kub hloov pauv, yog vim li cas cov tuam txhab tsim khoom sib xyaw ua tiav uas pabcuam ntau thaj chaw uas huab cua hloov pauv ntau thaum lub caij tsim kho xaiv lawv.

Cov Tswv Yim Xaiv Uas Haum Rau Huab Cua

Rau kev ua cov pob zeb hauv huab cua kub hauv qhov kub siab tshaj 35 ° C, xav tau cov tshuaj tiv thaiv kom qeeb qeeb ntawm kev ntws thiab dej sai dua. Cov mis tshwj xeeb ua kom ua haujlwm tau txawm tias tom qab mus ncig ntev los ntawm cov chaw ua haujlwm mus rau qhov chaw ua haujlwm deb, uas tiv thaiv cov pob qij txha txias los ntawm kev tsim nyob rau hauv qhov chaw txuas ntxiv. Ntawm qhov tod tes, kev siv uas siv rau hauv huab cua nruab nrab yuav siv cov nqi tshuaj me dua kom tau txais kev ncua sijhawm luv dua uas ua haujlwm nrog cov phiaj xwm xaus ib txwm muaj. Cov haujlwm ntug dej hiav txwv uas raug rau cov sulfate ntau tau txais txiaj ntsig los ntawm cov mis uas tiv taus ntsev ntau dua thiab ua haujlwm zoo nrog cov ntaub ntawv cementitious ntxiv xws li cov tshauv ya lossis slag, uas ua rau cov qauv kav ntev dua tiv thaiv cov huab cua hnyav.

Kev Sib Haum Xeeb Nrog Cov Hom Cement thiab Cov Qauv Sib Xyaws

Cov lag luam uas ua cov pob zeb sib xyaw ua tiav lawm xav tau cov tshuaj retarders uas ua haujlwm nrog ntau hom Portland cement, xws li Hom I/II general-purpose thiab Hom V sulfate-resistant hom. Thaum ua precast, cov chaw tsim khoom tsom mus rau kev ntxiv cov khoom xyaw uas ua kom cov duab ruaj khov thaum lub sijhawm demolding. Thaum cov pob zeb loj siv rau hauv cov pas dej lossis cov choj, nws yuav tsum tau sib xyaw rau hauv txoj kev uas tswj qhov kub ntawm hydration thiab tiv thaiv kev tawg thermal los ntawm kev tswj cov nqi exothermic reaction. Kev paub txog cov qhov sib txawv no pab cov thawj coj yuav khoom xaiv cov khoom uas ua tau raws li cov qauv kev ua tau zoo ntawm ib qhov project tshwj xeeb. Qhov no ua tau los ntawm cov pab pawg txhawb nqa kev tshaj lij los ntawm cov chaw tsim khoom uas muab cov lus qhia txog kev tsim qauv sib xyaw thiab kev cob qhia hauv tsev rau cov neeg ua haujlwm tswj xyuas zoo.

Cov txiaj ntsig ntawm kev siv cov tshuaj tiv thaiv pob zeb hauv cov haujlwm tsim kho thoob ntiaj teb

Siv cov tshuaj tiv thaiv kev sib xyaw ua ke thiab lwm yam tshuaj ntxiv uas tswj kev teeb tsa raws li txoj kev npaj tseg yuav hloov tus nqi thiab cov qauv ntawm ib qhov project. Lub sijhawm ua haujlwm ntev dua ua rau cov nqi zog ua haujlwm qis los ntawm kev tiv thaiv cov neeg ua haujlwm kom tsis txhob ua haujlwm ntxiv sijhawm ntawm cov dej num nyuaj uas xav tau kev ua haujlwm txuas ntxiv. Kev sib koom ua ke zoo dua tshem tawm cov honeycomb thiab qhov sib txawv, uas ua rau qhov chaw tiav zoo dua thiab ua rau qhov ntom ntawm cov qauv nce ntxiv. Thaum saib thoob plaws cov haujlwm loj hauv kev tsim kho vaj tse, cov txiaj ntsig kev ua haujlwm no ntxiv rau kev txuag nqi tiag tiag.

Kev Ua Haujlwm Ntev thiab Kev Tiv Thaiv Mob Pob Qij Txha

Cov neeg ua haujlwm tuaj yeem tso cov pob zeb ua vaj tse rov ua dua hauv cov qhov rai tseem ceeb thaum kev teeb tsa qeeb. Qhov no tshem tawm cov dav hlau tsis muaj zog uas ua rau lub qauv tsis muaj zog. Qhov no pab tau zoo heev rau cov khoom siab xws li phab ntsa lossis txoj kev paving, qhov twg cov txiaj ntsig zoo nyob ntawm kev nce qib. EverStar Group cov mis sodium gluconate-based tau siv rau hauv cov haujlwm uas tau tshaj tawm txog kev ua haujlwm txuas ntxiv 3-5 teev ntawm 0.10% tus nqi. Qhov no tso cai rau kev ua tiav du thoob plaws qhov chaw loj thaum khaws cia slump retention, uas ua rau kev twj tso kua mis thiab kev sib sau ua ke yooj yim dua.

Kev Txhim Kho Kev Ruaj Ntseg thiab Kev Txhim Kho Lub Zog

Thaum cov dej noo qeeb dua, cov qauv me me yuav tuab dua, tsis tu ncua dua, thiab tsis yooj yim nkag mus. Qhov no ua rau nws tiv taus chloride tawm tsam, sulfate tawm tsam, thiab freeze-thaw cycling, tag nrho cov no yog cov yam tseem ceeb uas txiav txim siab tias cov khoom siv yuav kav ntev npaum li cas hauv hiav txwv lossis deicing ntsev. Kev sim hauv chav kuaj qhia tau tias cov tshuaj retarders uas tau muab tshuaj kom raug muaj 28-hnub compressive nqi uas siab dua 110% ntawm cov khoom sib xyaw tswj. Qhov no ua tau raws li cov qauv kev ua tau zoo ntawm ASTM C494 Hom B. Cov tsev ua tiav tau ruaj khov dua dhau sijhawm, uas txhais tau tias lawv xav tau kev saib xyuas tsawg dua thiab raug nqi tsawg dua thoob plaws lawv lub neej tag nrho.

Environmental thiab Sustainability Considerations

Cov yam ntxwv ntawm kev puas tsuaj ntawm cov khoom siv niaj hnub no hauv cov qauv c oncrete retarder ua tau raws li qhov xav tau ntawm kev txhawj xeeb txog ib puag ncig. Cov khoom uas ua tau raws li OECD 301E cov lus qhia yuav puas tsuaj tsawg kawg 90% hauv 28 hnub, uas txhais tau tias lawv muaj tsawg lossis tsis muaj kev cuam tshuam rau ib puag ncig thaum lawv raug ntxuav mus lossis tso tawm tsis raug. Fe³⁺ chelation zoo dua li cov chelators ib txwm muaj xws li EDTA ntawm cov pH nruab nrab (> 11), uas pab ntxuav cov txheej txheem tsim khoom. Cov yam ntxwv no yog raws li qhov xav tau kom tau txais daim ntawv pov thawj LEED thiab nrog cov tuam txhab ESG cog lus. Qhov no yog qhov tseem ceeb tshwj xeeb rau cov neeg tsim khoom uas xav tau kev lees paub txog lub tsev ntsuab lossis ua raws li cov cai hauv qhov chaw uas qhov project yuav cuam tshuam rau ib puag ncig.

Yuav Ua Li Cas Xaiv Cov Tshuaj Retarder Uas Zoo Rau Koj Txoj Haujlwm

Cov Qauv Kev Ua Haujlwm Tshwj Xeeb rau Qhov Project

Kauj ruam thawj zaug hauv kev xaiv cov tshuaj tiv thaiv pob zeb yog xam seb qhov kev ncua sijhawm teeb tsa yuav tsum ntev npaum li cas raws li cov ntsiab lus ntawm qhov chaw thiab ib puag ncig. Cov kws ua vaj tse teeb tsa lub hom phiaj lub sijhawm khaws cia qhov poob qis, qhov kawg ntawm lub zog ntsuas, thiab seb cov khoom siv ua haujlwm zoo li cas nrog cov pob khoom admixture uas muaj cov tshuaj txo dej thiab cov neeg sawv cev uas ntes cua. Cov pab pawg uas saib xyuas kev yuav khoom saib cov ntawv pov thawj los ntawm cov neeg muag khoom, xws li FCC, USP, BP, HALAL, KOSHER, thiab ISO 9001, kom paub tseeb tias lawv ua raws li cov cai hauv txhua lub khw txawv teb chaws. Cov chaw kuaj xyuas ywj pheej xws li SGS thiab Intertek muab cov ntaub ntawv kev ua tau zoo rau cov neeg tsim khoom paub zoo. Qhov no txhawb nqa cov lus thov nrog cov pov thawj sab nraud uas pab nrog kev saib xyuas zoo.

Kev Ntseeg Siab ntawm Cov Neeg Muab Khoom thiab Kev Ruaj Ntseg ntawm Cov Khoom Siv

Rau cov haujlwm tsim kho vaj tse kom mus zoo, cov ntaub ntawv yuav tsum tau ntws tas mus li thiab raws sijhawm nrog cov phiaj xwm tsim kho. Kev ncua sij hawm uas siv nyiaj ntau tuaj yeem zam tau los ntawm kev kuaj xyuas cov peev xwm tsim khoom ntawm cov neeg muab khoom, cov txheej txheem tswj cov khoom muag, thiab cov tes hauj lwm thauj mus los. Nrog cov nroj tsuag zoo tshaj plaws nyob ze ntawm cov chaw nres nkoj loj thiab muaj peev xwm txhua xyoo ntau dua 50,000 tons, EverStar Group ua kom ntseeg tau tias muaj cov khoom loj ruaj khov. Cov khoom txheem raug xa tuaj tsis pub dhau peb hnub, thiab cov mis uas tau ua kom haum rau cov tshuaj lom neeg ntawm cov khoom sib sau ua ke lossis cov xwm txheej sulfate siab hauv thaj chaw raug xa tuaj tsis pub dhau tsib txog xya hnub. Qhov kev teb sai no, nrog rau kev pab los ntawm cov kws tshaj lij muaj 24 teev hauv ib hnub, xya hnub hauv ib lub lis piam hauv ntau hom lus, daws cov teeb meem kev nrhiav khoom uas cov neeg cog lus txawv teb chaws thiab cov tuam txhab EPC ua haujlwm rau cov haujlwm nyuaj, lub sijhawm rhiab heev muaj.

Kev Tshuaj Xyuas Tus Nqi-Cov Txiaj Ntsig rau Kev Txiav Txim Siab Yuav Khoom

Nrog rau kev teem nqi ncaj qha los ntawm lub Hoobkas, tsis muaj kev nce nqi rau cov neeg nruab nrab, yog li cov nqi qis dua 20–40% piv rau cov kev faib khoom txheem. Cov txiaj ntsig kev lag luam no loj hlob thaum ntau yam khoom raug yuav ib zaug, zoo li thaum cov haujlwm tsim kho xav tau ntau txhiab tons. Cov thawj coj kev yuav khoom ntsuas cov nqi chav tsev piv rau kev kwv yees kev ua tau zoo thiab nyiam cov neeg muab kev pabcuam nrog cov kev pab cuam qauv dawb uas cia lawv sim ua ke nrog cov khoom sib sau ua ke hauv zos ua ntej tso cov xaj loj. Pib ntawm tsib tons, qhov tsawg kawg nkaus xaj tuaj yeem ua tiav los ntawm ob qho tib si cov haujlwm loj thiab cov neeg faib khoom hauv cheeb tsam uas tsim lawv cov khoom lag luam. Cov txheej txheem nqi meej ua rau kev tswj hwm nyiaj txiag thiab kev taug qab cov nqi yooj yim dua thoob plaws lub neej ntawm ib qhov project.

Cov Kev Xyaum Zoo Tshaj Plaws rau Kev Siv thiab Siv Cov Tshuaj Tiv Thaiv Pob Zeb

Kev Xam Tshuaj thiab Cov Txheej Txheem Sib Xyaws

Yuav kom tau txais qhov koob tshuaj kom raug, koj yuav tsum xam seb muaj pes tsawg cov khoom sau ua feem pua ​​ntawm cov cement loj. Qhov no feem ntau yog nruab nrab ntawm 0.1% thiab 0.5% los ntawm qhov hnyav ntawm cov khoom siv cementitious (BWOC). Kev sib tov sim ntawm qhov chaw txiav txim siab qhov nrawm zoo tshaj plaws los ntawm kev xav txog qhov kub, cov cement teb li cas, thiab lub sijhawm uas yuav tsum tau tso cai. Cov khoom ntxiv yuav tsum tsis txhob ntxiv ncaj qha rau cov cement qhuav. Hloov chaw, lawv yuav tsum tau ntxiv thaum lub sijhawm sau lossis tom qab sib tov thawj zaug. Kev sib kis tsis tu ncua yog ua kom ntseeg tau los ntawm kev sib tov cov khoom xyaw tsawg kawg 90 vib nas this tom qab lawv tau ntxiv. Cov pab pawg tswj xyuas zoo saib xyuas qhov poob qis dhau sijhawm thiab sau cov txiaj ntsig kom cov koob tshuaj tuaj yeem txhim kho rau kev khiav yav tom ntej thiab kev sib xws tau khaws cia thoob plaws qhov chaw uas kav ntev dua ib hnub.

Tsis txhob muaj teeb meem ntawm daim ntawv thov

Kev siv tshuaj ntau dhau yog qhov yuam kev feem ntau, uas tuaj yeem ua rau lub sijhawm teeb tsa ntev dua lossis ua tsis tiav mus tas li, uas yuav xav tau kev kho kim heev. Cov txiaj ntsig zoo li no tuaj yeem zam tau los ntawm kev ua raws li cov lus qhia ntawm cov chaw tsim khoom thiab ua qhov kev sim tiv thaiv kev nkag mus raws li ASTM C403. Thaum cov hom lignosulfonate qub raug sib xyaw nrog PCE superplasticizers, lawv yuav tsis ua haujlwm zoo ua ke. Qhov no tuaj yeem ua rau kev sib cais lossis tsis ruaj khov ntawm huab cua. Kev sib cuam tshuam teeb meem pom thaum lub sijhawm kuaj ua ntej ua ntej lawv siv hauv thaj teb. Cov xwm txheej ntawm kev khaws cia yog qhov tseem ceeb. Cov kua sib xyaw yuav tsum tau khaws cia rau hauv thaj chaw tsis muaj te, UV-tiv thaiv uas nyob nruab nrab ntawm 5 thiab 35 ° C kom cov tshuaj tsis tawg thiab hloov pauv lawv ua haujlwm zoo li cas.

Kev Nyab Xeeb thiab Kev Ua Raws Cai

Cov txheej txheem siv tshuaj lom neeg hauv chaw ua haujlwm suav nrog hnav cov khoom tiv thaiv qhov muag thiab hnab looj tes thiab xyuas kom muaj cua txaus thaum lub sijhawm ua haujlwm batching. Cov Ntawv Qhia Txog Kev Nyab Xeeb teev cov kev pab thawj zaug thiab ntxuav qhov tsis huv. Cov khoom uas ua tau raws li FDA, REACH, thiab cov qauv kev cai lij choj hauv cheeb tsam pab kom ntseeg tau tias cov haujlwm txawv teb chaws tau ua tiav kom raug. Kev tswj hwm ib puag ncig suav nrog kev khaws cov dej khib nyiab rau hauv ib qho chaw thiab tshem tawm nws hauv txoj kev uas ua raws li cov cai hauv zos. Kev cob qhia tsis tu ncua rau cov neeg ua haujlwm ntawm cov chaw batching thiab cov pab pawg hauv thaj teb ua rau cov qauv kev nyab xeeb siab thiab xyuas kom meej tias siv cov txheej txheem raug. Kev taug qab daim pib batch, cov ntaub ntawv tshuaj, thiab cov txiaj ntsig kev xeem zoo nrog cov ntaub ntawv sau tseg tsim cov kev tshuaj xyuas uas pab ISO 9001 cov txheej txheem tswj hwm zoo thiab kev kuaj xyuas kev ua raws li cov lus qhia ntawm qhov project.

xaus

Cov tshuaj admixtures uas tswj tau xws li cov concrete retarders tau dhau los ua cov cuab yeej tseem ceeb rau kev tsim kho niaj hnub no, ua rau nws muaj peev xwm tsim cov qauv nyuaj uas yuav tsis ua tau lossis pheej yig lwm yam. Cov zaub mov txawv niaj hnub no nyuaj heev hauv kev siv tshuab. Piv txwv li, cov khoom lag luam sodium gluconate muaj cov kab lus teb rau cov tshuaj thiab tuaj yeem siv rau hauv ntau yam lag luam. Qhov no yog qhov tshwm sim ntawm ntau xyoo ntawm kev vam meej hauv kev tsim kho tshuaj. Nws pab tau rau cov neeg ua haujlwm yuav khoom kom nkag siab txog qhov sib txawv no kom lawv tuaj yeem xaiv cov neeg muab kev pabcuam uas muab kev tsim khoom loj, kev paub txog kev siv tshuab, thiab cov txheej txheem kev pabcuam teb tau. Raws li lub ntiaj teb cov kev xav tau rau kev tsim kho vaj tse loj hlob thiab tib neeg txhawj xeeb ntau ntxiv txog kev ruaj khov, nws tseem ceeb dua puas tau los nrhiav cov neeg koom tes uas koj tuaj yeem ntseeg siab uas tuaj yeem muab cov khoom zoo sib xws, lub peev xwm los kho kom haum, thiab kev txhawb nqa tag nrho rau lub sijhawm ntawm qhov project.

FAQ

Puas yog qhov qeeb ua rau lub zog ntawm cov pob zeb ua kom tsawg dua?

Thaum siv rau hauv qhov ntau thiab tsawg, cov tshuaj ntxiv zoo retarding khaws lossis txhim kho lub zog compression 28 hnub. Cov txheej txheem hydration qeeb dua ua rau cov qauv siv lead ua kom zoo dua, uas feem ntau ua rau 110–115% ntawm lub zog sib tov tswj uas xav tau los ntawm ASTM C494. Thaum 7, 28, thiab 90 hnub, kev sim lub zog qhia txog kev ua tau zoo uas txhawb nqa cov kev xav uas tau ua thaum lub sijhawm tsim qauv.

Muaj cov kev xaiv rov zoo li cas tom qab noj tshuaj ntau dhau tsis tau xav txog?

Thaum ib tug neeg siv tshuaj ntau dhau heev, lawv xav tau kev pab los ntawm cov kws tshaj lij. Cov kev xaiv suav nrog cia nws kho ntev dua ntawm qhov kub thiab txias thiab av noo, ntxiv cov tshuaj sib xyaw uas ua kom cov txheej txheem sai dua los them rau qhov ncua sijhawm, lossis, hauv cov xwm txheej phem tshaj plaws, tshem tawm thiab hloov cov khoom. Kev txiav txim siab yog raws li kev taug qab tas mus li los ntawm kev sim kev ruaj ntseg. Kev tiv thaiv los ntawm kev sib xyaw kom raug thiab kev cob qhia cov neeg ua haujlwm tseem yog txoj hauv kev zoo tshaj plaws los ua tej yam.

Kuv yuav ua li cas thiaj paub tseeb tias kuv tus neeg muag khoom cement sib haum nrog kuv li cas?

Thov kom muaj kev sim ntawm cov qauv siv hom cement, cov ntaub ntawv, thiab cov pob khoom sib xyaw tag nrho uas koj xav siv. Raws li ASTM C403 qhia, sim ua kom cov slump retention txhua 30 feeb rau plaub teev thiab sau lub sijhawm teeb tsa. Thaum siv cov khoom siv cua nkag, piv rau seb cov huab cua nyob ruaj khov npaum li cas. Cov neeg sawv cev ntawm cov tuam txhab muaj npe nrov muaj los pab nrog cov kev sim no dawb.

Koom tes nrog EverStar Group rau Kev Muab Khoom Siv Retarder Concrete Txhim khu kev qha

Peb paub tias nws nyuaj npaum li cas rau cov thawj coj yuav khoom kom nrhiav tau cov khoom sib xyaw ua ke uas txhim khu kev qha, ua tau zoo uas ua tau raws li qhov xav tau ntawm ib qhov project. EverStar Group tau ua tej yam tau 14 xyoo thiab muaj ntau daim ntawv pov thawj, xws li ASTM C494, EN 934, REACH, HALAL, thiab KOSHER. Lawv muaj cov neeg siv khoom hauv ntau dua 50 lub tebchaws, suav nrog Fortune 500 lub tuam txhab thiab cov thawj coj hauv lawv cov teb. Peb cov khoom sodium gluconate ua haujlwm raws li qhov xav tau, thiab vim tias lawv los ntawm lub Hoobkas, koj tuaj yeem txuag tau 20-40% piv rau kev yuav los ntawm lwm lub tuam txhab. Email rau peb pab neeg ntawm info@cneverstar.com kom tau txais cov qauv dawb uas yuav ua haujlwm nrog koj cov ntaub ntawv, tham txog OEM / ODM kev hloov kho rau kev siv tshwj xeeb, lossis saib rau hauv kev xaiv rau kev yuav khoom ntau pib ntawm tsib tons. Mus saib everstargroup.cn kom nkag mus rau cov ntaub ntawv kev siv tshuab thiab cov tshuab xam zauv sib xyaw thiab txuas nrog cov pab pawg txhawb nqa ntau hom lus npaj txhij los pab koj txiav txim siab zoo tshaj plaws txog koj txoj kev npaj sib xyaw ua ke.

References

1. Ramachandran, VS, Malhotra, VM, Jolicoeur, C., thiab Spiratos, N. (1998). Superplasticizers: Cov Khoom thiab Daim Ntawv Thov hauv Concrete . Ottawa: CANMET.

2. Dodson, VH (1990). Cov Tshuaj Sib Xyaws Ua Los Ntawm Pob Zeb . New York: Van Nostrand Reinhold.

3. Rixom, R. thiab Mailvaganam, N. (1999). Cov Tshuaj Sib Xyaws Rau Cov Pob Zeb . London: E & FN Spon.

4. Lub Koom Haum Asmeskas rau Kev Ntsuas thiab Cov Khoom Siv (2020). ASTM C494: Cov Qauv Txheem rau Cov Tshuaj Sib Xyaws rau Pob Zeb . West Conshohocken: ASTM International.

5. Neville, AM thiab Brooks, JJ (2010). Kev Siv Tshuab Ua Vaj Tse . Essex: Pearson Education Limited.

6. Aitcin, PC (2016). Kev Tshawb Fawb thiab Tshuab ntawm Cov Tshuaj Sib Xyaws Ua Los Ntawm Pob Zeb . Cambridge: Woodhead Publishing.