Kongiri inodzoreredza simende imhando yemakemikari anoderedza kunyorova kwesimbi. Izvi zvinoita kuti zvikwanisike kushanda nekongiri kwenguva yakareba isati yaoma. Kongiri dzinobatsira vavaki kuti vave nekutonga kwakawanda pakuiswa kwayo nekupedzisa nekudzora mashandiro emakemikari anokonzera kudonha kwesimbi. Izvi zvinonyanya kukosha panguva yekudururwa kwesimbi kwakaoma, mamiriro ekunze anopisa, kana kutakurwa kwenguva refu. Hwindo iri rinogara kwenguva refu rinomisa majoini anotonhora, rinoderedza njodzi yekuputika kwesimbi mukongiri, uye rinoita shuwa kuti mapurojekiti makuru ese ane magumo akafanana pamusoro.

Kunzwisisa Concrete Set Retarders: Tsanangudzo uye Mechanism

Chinhu chinodzivisa kugadzirwa kwekongiri chinoshanda nekudzivirira maitiro ekutanga anoitika kana simende yaoma, kunyanya ayo anosanganisira tricalcium silicate (C₃S) uye tricalcium aluminate (C₃A). Kana zvinhu izvi zvikasanganiswa mukongiri, zvinonamira pazvidimbu zvesimende uye zvinoita muganho mupfupi unononotsa kuburitswa kwecalcium ions uye kuumbwa kwecalcium silicate hydrate (CSH) gel, iyo inosunga kongiri pamwe chete kana yaoma.

Kemikari Inoumbwa uye Active Ingredients

Kune mapoka matatu emakemikoro anowanikwa nemaSet Retarders mazhinji . Lignosulfonates, anobva mukugaya huni, inzira isingadhuri yekunonotsa mashandiro ekuvaka. Hydroxycarboxylic acids, dzakadai secitric netartaric acids, inokutendera kuti utonge zvakanaka kuti chinhu chinotora nguva yakareba sei kuti chigadzike uye anowanzo shandiswa mu concrete Applications . Rudzi rwechitatu i sodium gluconate (CAS 527-07-1), inova bio-based polyhydroxycarboxylate inogadzirwa ne glucose inovirisa. Iyi white crystalline powder ine linear, yakavimbika set-control effect uye haikonzeri flash-sets chero papi zvapo. Izvi zvinoita kuti inyanye kubatsira pa concreting yemamiriro ekunze anopisa uko thermal acceleration iri dambudziko.

Mashandiro anoita maRetarders neCement Hydration

Zvinodzora zvinoita kuti chikamu chekusashanda chigare kwenguva yakareba chisati chatanga chikamu chekukurumidzisa panguva yekuomeswa kwesimende. Nguva iyi yekumirira inoita kuti kongiri igare yakachinjika kwenguva yakareba, kazhinji maawa maviri kusvika mana ekuwedzera, zvichienderana nehuwandu hwashandiswa uye mamiriro ekunze. Maitiro aya anosanganisira kukwezva ma calcium ions uye kuvaka complexes nezvigadzirwa zve hydration yekutanga. Izvi zvinomisa kukura kwemakristaro eCSH kwenguva pfupi. Zvakakosha kuziva kuti kunonoka kwe hydration uku kunowanzo tungamira kusimba rakawanda rekumanikidzwa kwenguva refu kana richishandiswa pamatanho anokurudzirwa. Izvi zvinodaro nekuti kuita zvishoma nezvishoma kunoita kuti microstructure ive yakarongeka uye yakakora.

Mhando uye Mabhenefiti eConcrete Set Retarders

Kune mhando dzakasiyana dzemaseti ekongiri anoshandiswa mubhizinesi rekuvaka, uye imwe neimwe yakagadzirirwa basa rakati uye zvinodiwa pakuita basa. Kana vatariri vekutenga vachiziva misiyano iyi, vanogona kuenzanisa zvinhu zviri nani nezvinodiwa papurojekiti uku vachiwanawo mhando yepamusoro uye kukosha kwemari.

Zvidziviriro zvechisikigo vs. zvekugadzira

Zvimwe zvinhu zvinoderedza simba remushonga we ...

Kusanganiswa Kwepamusoro-Kushandiswa vs. Kusanganiswa Kwakabatana

Zvinhu zvinodzora pamusoro zvinoiswa pafomu kana pamusoro pekongiri kuti chigadziko chepamusoro chisanyanya kuomera. Izvi zvinoita kuti magadzirirwo ematombo aoneke. Zvinhu zvinosanganiswa zvinowedzerwa mukongiri, saka zvinoderedza kudira kwemvura zvakaenzana. Zvinhu zvinosanganiswa, zvakaita sesodium gluconate, zvinoramba zvakanaka kana zvawanda. Izvi zvinoderedza kusiyana uye zvinoita kuti pave nekushanda kwakavimbika mumapurojekiti akakosha ekuvaka akadai senhandare dzendege nenheyo dzemadhamu.

Kubatsira Kwakakosha Kwekuita

Kushandisa ma retarder kune mabhenefiti akawanda kupfuura kungowedzera nguva. Zvinochengetedza layer yekare ichibatana kana kusimudza kunotevera kwaiswa pasi, izvo zvinodzivirira majoini anotonhora kuti asaite mvura yakatwasuka. Muzvivakwa zvakagadzirwa nekongiri yakawanda, ma retarder anoderedza kupisa kwakanyanya kwemvura. Izvi zvinoderedza mutsauko wekupisa unokonzera kutsemuka. Mahwindo ekufambisa akareba akanaka kune vanogadzira zvinhu zvakagadzirira kusanganiswa nekuti vanorega zvigadzirwa zvavo zvichisvika kumaruwa kana kuburikidza nemaguta akazara vanhu pasina kukanganisa kugona kwavo kushanda. Kupedzwa kwepamusoro kuri nani nekuti vashandi vane nguva yakakwana yekukwesha, kugadzira, uye kuisa chigadzirwa chekuomesa chisati chatanga kunyura.

Mashandisiro Ekushandisa Concrete Set Retarder Zvinobudirira Mumapurojekiti Ekuvaka

Nyatsocherechedza huwandu hwekongiri yaunoshandisa, mashandisirwo aunoita, uye zvakakupoteredza paunenge uchiita izvi. Kana vatariri vekutenga nekutenga vachiziva nezvenyaya idzi dzetekinoroji, vanogona kusarudza zvinhu zvinoshanda zvakanaka nemaitiro aripo uye kudzivirira matambudziko akajairika.

Nhungamiro dzeDosage uye Maitiro ekusanganisa

Chiyero chinowanzo shandiswa chiri pakati pe0.2% ne0.5% yehuremu hwesimende, asi izvi zvinogona kuchinja zvichienderana netembiricha, rudzi rwesimende, uye nguva yaunoda kuti kunonoka kugare. Kuti kumise kukura kwekupisa, tembiricha dzakakwirira dzinoda madhigirii akakwira. Kuti uve nechokwadi chekuti sodium gluconate ine purity yakakwira (≥98.0% purity) yakapararira zvakaenzana mumusanganiswa, michina chaiyo yekusanganisa inodiwa. Chinhu ichi hachifanirwe kuiswa pasimende yakaoma; chinofanira kuwedzerwa mumvura yekusanganisa kana kusanganiswa mukati mekuvaka. Kana ukashandisa zvakanyanya, zvinogona kukonzera kunonoka kwemazuva, asi kana ukachengeta simende yakanyorova, pakupedzisira inonamira uye inosvika simba rayo rekutanga.

Mamiriro Ekushandisa uye Nyaya Dzidzo

Madhiraivha ekugadzirisa anoshandiswa kudzora kupisa kwemvura mumapurojekiti ekongiri akaita sekuvaka madhamu nematanda ekutsigira ane ukobvu hunopfuura mamita maviri. Mumamiriro ezvinhu aya, kunonoka kuisa kunoita kuti tembiricha yepakati iderere zvishoma nezvishoma, izvo zvinomisa kunonoka kuumbwa kwe ettringite uye kuputika kwekupisa. Makambani anoshanda kwenguva refu anoshanda pamapurojekiti ekuvaka kumaruwa anoshandisa madhiraivha ekugadzirisa kuti musanganiswa urambe uchipombwa mushure mekufamba kwemaminitsi anopfuura makumi mapfumbamwe. Madhiraivha ekugadzirisa pamusoro anoshandiswa mukongiri yekuvaka yekushongedza kuti apedzise gravel inooneka. Hunhu hwepamusoro hwekupedzisira hunoenderana nekuti nguva yacho yapera sei.

Kuchengetedzwa uye Kutevedzwa Mafungiro

Vanhu vanobata sodium gluconate vanofanira kupfeka zvipfeko zvekuchengetedza zvakajairika zvakaita semagirovhosi nemagirazi ekuchengetedza, kunyangwe zvisina kukuvadza semamwe machelators. Kuti vadzivise kuchekwa, kuchengetwa kunofanira kuitwa munzvimbo dzinotonhorera, dzakaoma dziri kure nehunyoro. Chigadzirwa ichi hachina chloride (≤0.05% chloride content), saka hapana njodzi dzekuwedzera ngura. Chinosangana nezvinodiwa neASTM C494 Type B na EN 934-2. Sodium gluconate iri nyore kubata nayo nekuti inopwanyika yega. Sekureva kwemaitiro ekuyedza eOECD 301E, inopwanyika ne90% mumazuva makumi maviri nemasere.

Kusarudza Seti Yekongiri Yakakodzera Yekudzosera Zvinhu Zvako

Kuti usarudze kongiri yakanakisa yekudzora kongiri , unofanirwa kuyera mashandiro ehunyanzvi, kutevedzera mitemo, kugadzikana kwecheni yekugovera, uye mutengo wese wekuva muridzi. Kuti vatengi veB2B vawane mhinduro dzinosangana nezvinodiwa zvepurojekiti yenguva pfupi uye zvinangwa zvekuronga kwenguva refu, vanofanirwa kutarisa zvinhu zvakawanda zvakasiyana.

Maitiro Ekushanda Kwehunyanzvi

Misanganiswa yekongiri yemazuva ano inofanira kunge ichishanda nema polycarboxylate superplasticizers nekuti mapurojekiti mazhinji anoda kuyerera kwakanyanya uye kushanda kwenguva refu. Maumbirwo e polyhydroxycarboxylate e sodium gluconate anoita kuti ishande zvakanaka nema PCE mixtures pasina kuikanganisa. Inogona kushandiswa nemhando dzakasiyana dzesimende, kusanganisira high-volume fly ash (HVFA) concrete, nekuti 10% solution ine pH range ye6.2 kusvika 7.8. Zvisinei, madosi anofanira kugadziriswa nokungwarira nekuti fly ash inotononoka process yekupisa. Zvigadzirwa zvinofanirwa kunge zvine linear set delay curves dzinobvumira mainjiniya kufanotaura nguva dzekugadzirisa kunyangwe tembiricha dzichichinja.

Certification uye Quality Assurance

Kuti mapurojekiti ekuvaka epasi rose ashande, zvinhu zvinoshandiswa zvinofanira kusangana nezvinodiwa pasi rose. Pakushandiswa kwezvekudya, zvinhu zvemhando yepamusoro zvine mvumo yakaita seFCC (IV), BP, uye USP. Pakushandiswa kwezvekuvaka, zvine REACH, HALAL, KOSHER, uye ISO 9001. Kuongororwa kwechitatu neSGS neIntertek kunoita kuti zvinodiwa zvakaita seheavy metal content (≤10 ppm Pb), sulfate levels (≤0.05%), uye reduction chemicals (≤0.5%) zvizadzikiswe. Marezenisi aya akakosha zvikuru kumakambani anotenga zvinhu kubva kuhurumende uye anoshanda nemakambani eFortune 500 akadai seCEMEX neBASF.

Nzira yeKutengesa uye Kutenga

Kana tichienzanisa nemitengo inotengeswa nevatengesi, mitengo yefekitori inobva kunzvimbo dzakavimbika inoderedza mitengo ne20–40%, inova chinhu chikuru kumapurojekiti makuru anoda mazana ematani ekusanganiswa. Huwandu hushoma hwematani mashanu hunoratidza musanganiswa wakanaka pakati pekureruka kwekuwana uye kuchengetedza chiyero. Zvinhu zvakajairwa zvinofanirwa kutumirwa mukati memazuva matatu, uye mafomura akagadzirirwa zvinhu zvemuno kana nzvimbo dzemahombekombe dzine sulfate yakawanda anofanira kusvika mukati memazuva mashanu kusvika manomwe ebhizinesi. Nguva dzekutungamira dzakakosha zvikuru pakuvaka mapurani. Kuva pedyo nezviteshi zvengarava kunoderedza mutengo wekutumira, uye timu dzinotsigira tekinoroji dzinotaura mitauro yakawanda dzinoita shuwa kuti munhu wese anokwanisa kunzwisisana mumabasa epasi rese.

Sustainability uye Environmental Responsibility

Zvimwe zvinoora zvinogona kuora panzvimbo pezvinouraya senge EDTA neNTA zvinopihwa pekutanga nekutenga mapurani ari padanho repamusoro. Sosi ye sodium gluconate inobva mukuvirisa glucose inobva ku bio-based inoenderana nekuedza kwekuvaka green uye LEED certification standards. Vatengesi vanobvumirana kuderedza kuburitswa kwecarbon nechikamu chakati panosvika 2030 vanoenderana nezvinodiwa neESG business standards zviri kuwedzera kukosha kune varidzi vemasangano. Nekuti inogona kushandiswa se concrete retarder uye industrial chelating agent, zvinoita kuti madhipatimendi akawanda akwanise kutenga zvakawanda, izvo zvinoita kuti makambani akwanise kuchengetedza mari yakawanda.

Kugadzirisa Mashandiro Ekongiri NemaSeti Ekuchengetedza: Maitiro Akanakisisa

Kuti uwane zvakawanda kubva muzvinhu zvinodzora makemikari, unofanirwa kuziva kuti zvinoshanda sei nezvimwe zvikamu zvemusanganiswa uye kuti matekinoroji matsva achachinja sei magadzirirwo anoitwa kuvaka mune ramangwana. Kubatanidza concrete set retarder muchirongwa chako chekugadzira kunoita kuti pave nekugadzikana panguva dzekuisa zvinhu zvakaoma.

Maitiro Ekugadzira Synergistic

Kana uchisanganisa ma retarder nezvimwe zvinhu zvakasanganiswa, unogona kugadzira kongiri ine hunhu hunoenderana nezvinodiwa neinjiniya. Kana ma retarder akasanganiswa nezvinhu zvinopinza mhepo, kuramba kuomeswa nechando kuri nani munzvimbo dzinotonhora, uye kushanda kunoramba kwakafanana panguva yekuiswa. Ma retarder anoderedza mvura (ASTM C494 Type D) anoita zvese zviri zviviri. Anoderedza huwandu hwemvura kuita simende ukuwo achiita kuti nguva yekuisira ive yakareba. Izvi zvinoita kuti zvive zvakanaka pamabasa ane simba rakawanda anoda kudonha kwakaderera. Nekuti sodium gluconate inonaka pakucheka iron, inodzivirira misanganiswa yekongiri chena kuti isashanduke mavara kana yasangana nezvinhu zvine iron yakawanda kana pasi pevhu.

Maitiro ekugadzira kongiri yemamiriro ekunze anopisa

Kana tembiricha iri kunze yakakwira kupfuura 30°C (86°F), kunyikwa kunoitika nekukurumidza, izvo zvinogona kukonzera kuti chinhu chacho chiome chisati chanyatsopora. Maitiro anoshanda zvakanaka mumamiriro ekunze anosanganisira kutonhodza zvinhu zvacho, kushandisa mvura inotonhorera, uye kuwedzera huwandu hwe retarder ne 0.1 kusvika 0.2 muzana pa5°C yega yega tembiricha iri pamusoro pe20°C. Curve yekushanda kwakatwasuka ye sodium gluconate inobvisa njodzi dze flash-set kunyangwe pahuwandu hwakawanda, zvichikupa mipata yekuchengetedza kana mamiriro emunda akanyanya kuipa kupfuura zvawaifunga. Kuramba uchitevera ne mita dzekukura kunobatsira kuchengetedza mwero wemvura uye kuita shanduko dzinochinja kune zvirongwa zvekuisa mvura.

Emerging Technologies uye Innovations

Zvishandiso zve smart zvine masensa anogonesa IoT zvinoti zvinokubvumira kuti utarise kuti kongiri inomira sei panguva chaiyo uye zvinobvumira maturusi ekugadzirisa nzvimbo kuti ataurirane pasina waya. Aya mazano matsva achaita kuti zvikwanisike kuchinja huwandu hwe retarder hunodiwa zvichibva pamaitiro chaiwo ekupisa panzvimbo pekufungidzira. Zvishandiso zvitsva zvinodzora mvura zvinoshandisa nanotechnology zviri kugadzirwa kuitira kuti mwero wemvura wemazinga emamorekuru ugone kudzorwa zvakanyatsonaka. Vanhu vanoshanda mukutenga zvinhu vanogara vachitaurirana nemasosi matsva vanowana mukana wekutanga wekuwana matekinoroji matsva. Izvi zvinovapa mukana pavanotanga mapurojekiti akaoma ane mwero wemhando yepamusoro.

mhedziso

Nekunzwisisa mashandiro anoita ma "concrete set retarders" uye kusarudza zvinhu zvakakodzera, unogona kushandura matambudziko akaoma ekuvaka kuita mabasa aunogona kubata nawo. Kunonoka kunoita kuti zvinhu zvive nyore kushanda nazvo kwenguva yakareba, zvinodzivisa kutsemuka kana zvapiswa, zvinoita kuti zvitumirwe kure, uye zvinoita kuti pamusoro pazvo pave nani mumamiriro akasiyana-siyana. Sodium gluconate muenzaniso wakanaka wetekinoroji yekuwedzera iripo nekuti yakavakirwa pa "bio-based", ine mashandisirwo akawanda, uye inoshanda nguva dzose asi isingakuvadzi nharaunda. Kana mamaneja ekutenga achinyanya kusimbisa ma "high-clean formulations", kubvumidzwa kwakakwana, uye mitsara yekupa zvinhu yakavimbika, makambani avo anogadzirira zviri nani kupedzisa mapurojekiti makuru ekuvaka uku vachifunga nezvemitengo yakaderera uye zvinangwa zvezvakatipoteredza.

FAQ

Kushandisa set retarder kunoderedza simba rekongiri here?

Kwete, kana ikaiswa dose nemazvo, kongiri yakanonoka inowanzova nesimba rekudzvanya kwemazuva makumi maviri nemasere rakafanana kana kupfuura semisanganiswa isina kugadziriswa. Maitiro ekuomesa anononoka anoita kuti chimiro chekristaro chive chakarongeka uye chine nzvimbo shoma dzisina chinhu, izvo zvinoita kuti chigare kwenguva refu. Zvidzidzo zvakaratidza kuti kongiri yakanonoka inogona kusimba ne5–10% nekuti zvidimbu zvacho zviri nani kuungana pamwe chete uye hapana kutsemuka kushoma.

Ndingaziva sei kuti mushonga upi wakakodzera wepurojekiti yangu?

Kuwanda kwekushandisa kunosiyana zvichienderana nekupisa kwenzvimbo, rudzi rwesimende, kuti munhu anoda kumirira kwenguva yakareba sei, uye kuti inoshanda zvakanaka sei nezvimwe zvinoshandiswa. Nzvimbo dzekutanga dzinowanzova pakati pe0.2 ne0.5 muzana nehuremu hwesimende. Izvi zvinogona kuchinjwa zvichikwira kana kudzika zvichienderana nemamiriro ekunze kana kushandiswa kwezvimwe zvinhu zvinosimbisa simende. Nzira chaiyo yekuziva kuti mushonga wacho ndewekuedza mabheti nezvinhu zvemuno nesimende. Vatengesi vakavimbika vanopa sampuro dzemahara uye rubatsiro rwenyanzvi kuti vave nechokwadi chekuti mafomula acho akanaka sezvaanogona asati agadzirwa padanho guru.

Ko zvinhu zvinoderedza nharaunda zvinoshanda zvakanaka sezvingangoitwawo zvechinyakare here?

Zvishandiso zvemazuva ano zvekongiri zvakagadzirwa ne bio-based bio-based set retarders, zvakaita se sodium gluconate, zvinoshanda zvakanaka kana zviri nani pane zvimwe zvigadzirwa. Zvinewo mhedzisiro iri nani kune zvakatipoteredza. Zvinhu izvi zvinosangana nezvinodiwa nesainzi uye zvakatipoteredza nekuti zvinoputsika ne90% mumazuva makumi maviri nemasere uye hazvisiye makemikari anokuvadza. Kushandisa chelator iyi kunokwezva mari nekuti kunochengetedza 20-40% pamitengo zvichienzaniswa ne chelators dzinokwikwidzana pasina kudzikisa mhando.

Batana neEverStar Group kuti uwane mhinduro dzeHigh-Performance Concrete Set Retarder Solutions

EverStar Group yakagadzirira kukubatsira nemapurojekiti ako ekuvaka nekupa sodium gluconate concrete set retarder yepamusoro-soro uye makore gumi nemana eruzivo mubasa iri. Nemuenzaniso wedu wekutengesa zvakananga weFactory, unogona kubatana zvakananga nemafekitori ari kuSouthern, Eastern, neNorthern China. Izvi zvinoderedza mikana yepakati uye zvinokuchengetedza 20–40% pamitengo zvichienzaniswa nedzimwe nzira dzekutenga zvinhu. Tinoshanda nevatengi vanobva kunyika dzinopfuura makumi mashanu, dzakadai seCEMEX, BASF, uye mapurogiramu makuru ekuvaka ehurumende. Nhoroondo yedu pamapurojekiti akaoma inokupa rugare rwepfungwa.

Chikwata chedu chenyanzvi chinowanikwa maawa makumi maviri nemana pazuva, mazuva manomwe pasvondo kuti chikubatsire mumitauro yakasiyana-siyana, kugadzira maformulations eOEM/ODM, uye kukupai masampuli emahara kuti mugone kuyedza kuenderana kwawo nematombo emuno. Zvitupa zvese zvakaita seASTM C494, EN 934, HALAL, KOSHER, REACH, uye FDA compliance zvinova nechokwadi chekuti chigadzirwa ichi chinogamuchirwa nevatongi munzvimbo dzese pasi rose. Tinogona kubata mapurojekiti ekutanga uye zvibvumirano zvikuru zvekugovera nekuti saizi yeodha shoma inongova matani mashanu chete uye kutumira kuri mukati memazuva matatu kusvika manomwe. Sekambani inogadzira ma set retarders ekongiri ane hanya nesainzi yegirini uye carbon neutral, tinoisa 5% yemari yedu yegore negore mukutsvaga nekuvandudza kuti tive nechokwadi chekuti mapurojekiti enyu anogara ari padanho repamusoro retekinoroji. Taurai ne info@cneverstar.com nekukasika kuti mutaure nezvezvamunoda uye muwane mazano ekugadzira akagadzirirwa munhu kubva kuchikwata chedu chetekinoroji.

References

1. Mindess, S., Young, JF, naDarwin, D. (2003). Konkriti: Maumbirwo, Zvivakwa, uye Zvishandiso , Chinyorwa chechipiri. Pearson Education.

2. Ramachandran, VS (1995). Bhuku reMisanganiswa yeConcrete: Properties, Science and Technology , Chinyorwa chechipiri. William Andrew Publishing.

3. American Society for Testing and Materials. (2017). ASTM C494/C494M-17: Tsananguro Yakajairika yeChemical Admixtures yeConcrete . ASTM International.

4. Neville, AM naBrooks, JJ (2010). Concrete Technology , Chinyorwa chechipiri. Pearson Education Limited.

5. Taylor, HFW (1997). Kemistri yeSimende , Chinyorwa chechipiri. Thomas Telford Publishing.

6. Komiti yeEuropean for Standardization. (2009). EN 934-2: Zvinosanganiswa zveKonkriti, Mortar, uye Grout - Chikamu 2: Zvinosanganiswa zveKonkriti . CEN Brussels.

Kudzora nguva yekugadzika kwekongiri kunova dambudziko guru reinjiniya pakuronga mapurojekiti makuru ekuvaka kana kudururwa kwekongiri inopisa zvakanyanya. Sechinowedzerwa chakakosha, kemikari inodzoreredza kongiri inoderedza kunyorova kwesimende. Izvi zvinoita kuti kongiri ive nyore kushanda nayo uku ichiramba iine simba rayo repamusoro. Njodzi dzekuisa flash, kuumbwa kwemajoini anotonhora, uye kurasikirwa nekudonha panguva yekufambisa zvese zvinhu zvinosangana nemafekitori akagadzirira, vavaki vezvivakwa, uye vagadziri vezvigadzirwa zvakagadziriswa kare muUnited States yese. Iyi tekinoroji inogadzirisa zvakananga matambudziko aya. Vatariri vekutenga nenyanzvi dzehunyanzvi vanogona kuderedza marara ezvinhu, kukurumidzisa mapurojekiti, uye kuona kuti zvivakwa zvinoramba zvakasimba munzvimbo dzakaoma dzekuvaka nekuziva mashandiro anoita izvi zvinowedzera uye kusarudza fomura chaiyo.

Chii chinonzi Concrete Retarder Chemical, uye Inoshanda Sei?

Zvinowedzerwa zveSet delay zvinoshanda nekunonotsa matanho ekutanga ematanho makuru emvura yesimende, kunyanya kukurumidza kweC3S (triccalcium silicate) neC3A (triccalcium aluminate). Makemikari aya anoita chipingamupinyi chakakomberedza zvidimbu zvesimende zvinodzivirira mvura kuti isasvike kwavari kwenguva pfupi uye zvinononotsa maitiro e exothermic anoita kuti simende iome. Izvi zvinoita kuti purasitiki igare kwenguva refu, izvo zvinopa vagadziri nguva yakawanda yekuisa, kuomesa, uye kugadzirisa pamusoro.

Kemikari Inoumbwa uye Mechanism

Hydroxycarboxylic acids ndiyo inowanzo shandiswa pakugadzirisa retardation yemazuva ano. Mhinduro yedu yemakemikari inonzi sodium gluconate-based concrete retarder chemical solution muenzaniso weiyi tekinoroji. Ine set delay curve inogara yakafanana kwemaawa 2-4 pa dose ye 0.1% mutembiricha iri pakati pe 30°C ne 35°C. Iyi bio-based compound iri nani pane lignosulfonate yekare kana dzimwe nzira dzeshuga nekuti ine linear, dose-responsive performance iyo yakaratidzwa ne isothermal calorimetry testing. Izvi zvinoreva kuti mainjiniya anogona kuchinja dose zvakachengeteka pasina kusangana nekukurumidzira kusingatarisirwi kana kurasikirwa nesimba kwenguva refu.

Molekyumu iyi inomisa kuumbwa kwemakristasi ecalcium silicate hydrate kwenguva pfupi nekukwevera uye kubata maion ecalcium panzvimbo yekubatana nesimende nemvura. Kunyorova kwakajairika kunotanga zvakare mushure memaawa mashoma ekudzivirira kupera, kazhinji zvichiita kuti zvinhu zvakaoma zvekristaro zviome kupfuura misanganiswa isina kudzoserwa. Ichi ndicho chikonzero nei kongiri yakasanganiswa zvakanaka ichiwanzova nesimba rekumanikidza kwemazuva makumi maviri nemasere, izvo zvinopesana nepfungwa yevanhu yekuti kunonoka kuiswa kunoita kuti kongiri isagare kwenguva refu.

Magadzirirwo Ekushanda uye Magadzirirwo Ehunyanzvi

Makemikari emhando yepamusoro anofanirwa kusangana nezvinodiwa zvakasimba. Resipi yedu yehunyanzvi ihupfu huchena, hwekristaro hune ≥98.0% yakachena. Inochengetedza huwandu hwechloride huri pasi pe0.05% kudzivirira simba rekusimbisa kubva kungura, inova chinhu chakakosha chinodiwa kumapurojekiti ekuvaka anofanirwa kugara kwemakore 50-100. Mhinduro ye10% ine pH iri pakati pe6.2 ne7.8, zvinoreva kuti inogona kusanganiswa nepolycarboxylate ether superplasticizers yazvino inowanzo shandiswa mukongiri inoshanda zvakanyanya.

Zvimwe zvakanakira zvesainzi ndezvekuti inonyungudika mumvura kanopfuura 99% yenguva, zvinoreva kuti inopararira zvakaenzana kunyangwe mumisanganiswa yekongiri isina mvura yakawanda, uye inorasikirwa nehuremu hwayo hwepakutanga isingasviki 0.5% kana yaoma, zvinoreva kuti inoshanda nenzira imwechete muhunyoro hwese. Heavy metal inoramba iri pasi pezvikamu gumi pamiriyoni yelead, izvo zvinotsigira kushandiswa kwemhando yechikafu uye kwekuvaka uko kunodiwa kutevedzera mitemo zvakanyanya.

Mhando uye Mashandisirwo eMakemikoro Ekuchengetedza Konkriti

Tekinoroji yekunonoka kweseti inoshandiswa mubhizinesi rekuvaka nenzira mbiri dzakasiyana. Imwe neimwe inosangana nezvinodiwa nebasa rakasiyana uye inopa mabhenefiti akasiyana kune makondirakiti nevagadziri vakagadzirira kusanganisa.

Zvidziviriro zvemhando yeAdmixture zveMass Concrete

Zvigadzirwa zvemakemikari zvinodzora kunyorova kwekongiri zvine mhando yekongiri zvinodzora kunyorova kwemvura mumusanganiswa wese kana zvawedzerwa pafekitori yekubatidza. Nzira iyi inodiwa pakuisa kongiri yakawanda yakakora kupfuura 1 cubic meter, senge nheyo dzemadhamu, matanda emabhiriji, kana raft slabs. Hwindo rinogara kwenguva refu rinodzora kupisa kwemvura kuti rimise kutsemuka kwekupisa. Izvi zvinoita kuti kukwidzwa kudzokororwe kusungirire nemakemikari pachinzvimbo chekugadzira majoini asina kusimba anotonhora.

Vashandi vezvivakwa vanoshanda panhandare dzendege uye pamigero yemigwagwa yemumugwagwa vanonzwa kuti izvi zvinochinjika sei pakuronga kwavo. Nguva yenguva dzose yekushanda yemaminitsi makumi mapfumbamwe inogona kuwedzerwa kusvika kumaawa mana kusvika matanhatu kuti vanzwisise zvinhu zvakaita sekuzara kwemotokari, michina yakaputsika, uye matambudziko ekubatanidza basa panzvimbo dzekuvaka muguta. Tekinoroji iyi inoderedzawo kudiwa kwekuramba kongiri nekukurumidza, izvo zvinoparadza zvinhu uye zvinokonzera kunonoka kunodhura mapurojekiti $500 kusvika $2,000 pa cubic yard.

Zvinodzivirira Pamusoro peMidziyo Yakasanganiswa

Mafomu anowedzerwa pamusoro anongoderedza 3–8 mm pamusoro peganda rekongiri. Chimwe chikamu chinosara kuti chigadzikane zvakanaka. Kana mukati masimba zvakakwana, vashandi vanosuka jira rakanonoka, zvichiratidza hunyanzvi hunodiwa pakugadzira kongiri, nzira dzekufamba nadzo dzakagadzirwa, kana mabhiriji anofukidza pamusoro pemabhiriji anoda kubatanidzwa nemagetsi anozodururwa gare gare.

Maitiro aya ane matanho maviri anogadzirisa dambudziko rekare mukugadzirwa kwekongiri yakagadzirwa kare: mwero wekuchinja chimiro unofanirwa kuenzaniswa nezvinodiwa kuti chitarisiko chive chakanaka. Kana tichienzanisa nenzira dzekukwesha dzemakanika, nzira iyi inobvumira vagadziri kubvisa mafomu nenguva asi vachiri kuwana kuomarara kwepanzvimbo kwavanoda. Izvi zvinowedzera simba rekugadzira ne20–30%.

Kushandiswa Mumamiriro Ezvinhu Ezvakatipoteredza

Munyika dzekumaodzanyemba dzakadai seTexas, Arizona, neFlorida, uko kunopisa, kudzora kunonoka kunodiwa pakupinza kongiri panguva yekupisa. Kana tembiricha iri kunze kwe30°C kana kupfuura, mwero wekubuda kwemvura unogona kukonzera kuti zvinhu zviome zvisati zvanyatsobatanidzwa. Sodium gluconate yedu yakagadzikana zvakanyanya pakupisa kwakanyanya kupfuura dzimwe nzira dze lignosulfonate. Inoramba ichishanda zvakanaka pakudzora kukura pasina kuramba ichiwedzera dose nenzira inodhura zvakanyanya uye inowedzera njodzi yekudarika mwero.

Kune rumwe rutivi, zvigadzirwa zvichashandiswa mumamiriro ekunze anotonhora ari pasi pe10°C zvinoda madosi akaderera kana musanganiswa wakasiyana wezvinowedzera simba. Tinopa matimu edu ekutsigira hunyanzvi maturusi ekuongorora dosi anoenderana nedunhu anofunga nezverudzi rwesimende (Type I/II Portland, masimende akasanganiswa neash kana slag), tembiricha yedombo, uye zvinodiwa neprojekiti iyi. Kugona uku kugadzirisa kwave kuchibatsira zvikuru kumakambani eEPC muNorth America ari kutarisira mapurojekiti ane mamiriro ekunze akasiyana.

Kuenzanisa Makemikoro Ekongiri Anodzora Konkriti: Kusarudza Yakakodzera Basa Rako

Kutenga zvinhu zvinoenderana nekuziva zvinoita kuti chimwe chinhu chishande zvakasiyana nechimwe uye kuti izvozvo zvinokanganisa sei kushandiswa kwenguva pfupi uye mhedzisiro yechimiro chenguva refu. Haasi matekinoroji ese ekunonoka anoshanda nenzira imwechete, uye kusarudza zvinhu zvisina kunaka kunogona kukanganisa nguva yepurojekiti nemari.

Zviyero zveKushanda uye Kuenderana

Kuti zvinhu zvinosanganiswa nekuvaka zvishande, zvinofanira kunge zvichifanotaurwa, zvichireva kuti nguva dzekugadzirisa dzinogona kufanotaurwa nemazvo kunyangwe mamiriro enzvimbo achichinja. Resipi yedu yakakosha inoita izvi nehukama hwedosi nemhinduro dzakatwasuka. Izvi zvinoreva kuti pakuwedzera kwega kwega kwedosi ne0.05%, mabhenefiti anogara kwemamwe maminetsi makumi matanhatu pasina kumira kamwe kamwe. Izvi zvakasiyana zvikuru nezvinodzora shuga, zvinogona kuita nenzira isiri yakatwasuka, izvo zvinogona kukonzera kunonoka kushoma kana mamiriro ezvinhu anotyisa akareba.

Zveupfumi Nezvakatipoteredza

Chimwe chinhu chakakosha pakuongorora ndechekuti chigadzirwa ichi chinoshanda zvakanaka sei nezvimwe zvinhu zvinosimbisa simende. Kuwedzera dota remvura kana guruva resilica mumusanganiswa kunochinja mashandiro azvo zvichienzaniswa nemasisitimu anoshandisa simende yePortland chete. Tinoshandisa nzira dzeASTM C403 dzekudzivirira kupinda kwesimbi kuyedza simende yemutengi wega wega uye musanganiswa weSCM kuti tive nechokwadi chekuti zvinoenderana. Nenzira iyi, tinogona kupa mainjiniya ekugadzira musanganiswa ruzivo rwakaratidza mashandiro panzvimbo pekutaura zvisina kujeka nezvechigadzirwa.

Mutengo wose wekuva muridzi wezvinhu unosanganisira zvinopfuura mutengo wekutenga chete. Unosanganisirawo mitengo yemushonga, mari yekutumira, uye kutevedzera nharaunda. Kana ukaenzanisa mashandiro emushonga wedu we sodium gluconate une bio-based kune zvigadzirwa zvakagadzirwa zvakaita seEDTA kana NTA, zvinokuchengetedza mari ne20–40%. Kuwanda kwecarbon footprint ye60–70% yemorekuru iyi kunosangana nezvinodiwa zveLEED v4.1 credits uye zvipikirwa zveESG zvemakambani, izvo zviri kuwedzera kukosha kumapurojekiti ezvivakwa ayo hurumende inobhadhara.

Mhinduro Dzinochengetedza Ruzivo Rwenharaunda uye Maitiro Eindasitiri

Nekuti chigadzirwa ichi chine zvitupa zvemhando yepamusoro uye zvemhando yepamusoro (FCC, USP, BP, HALAL, KOSHER), vagovanisi vanogona kushandira misika yezvivakwa neyezvekudya/mishonga. Izvi zvinoita kuti manejimendi yezvinhu zvive nyore uye zvinoderedza zvinodiwa nenhamba shoma yeodha. Kuchinjika uku kwave kuchibatsira zvikuru kune vatengesi vemakemikari vanoda kuvandudza hukama hwavo nevatengesi uye kuita kuti maitiro ekutenga ave anoshanda zvakanyanya.

Mapoka ekutenga anotarisa kuchengetedzeka kwezvakatipoteredza iye zvino anopa huremu hwakawanda kumabikirwo anokanganisika nekukurumidza uye anosangana nezvinodiwa zveOECD 301E. Mhinduro yedu inokanganisika ne90% mukati memazuva makumi maviri nemasere, zvichitsigira zvitupa zveEU Ecolabel neNordic Swan zvezvinodiwa zvine chekuita nekuchengetedzwa kwezvakatipoteredza. Izvi zvakasiyana nezvinonzi retarders zvekare zvakagadzirwa nephosphates, izvo zvinogara mumvura yepasi uye zvinokonzera njodzi ye eutrophication munzvimbo dzine njodzi kunzvimbo dzekuvaka.

Ruzivo rweKutenga: Maitiro Ekutenga Konkriti Retarder Chemical Yekushandisa Mumaindasitiri

Paunenge uchitsvaga zvinhu zvinogadzirisa kunonoka kwemagetsi, unofanirwa kuwana chiyero pakati pekushanda kwehunyanzvi, kugadzikana kwecheni yekugovera, uye mutengo wepasi rose. Izvi zvakakosha zvikuru kumakambani anotarisira nzvimbo dzakawanda dzepurojekiti kana zvinhu zvakawanda gore rega rega.

Supplier Evaluation Criteria

Zvitupa zvekugadzira ndiro danho rekutanga mukuona kuvimbika. Nzvimbo dzedu dzekugadzira dzakatenderwa neISO 22000 neFSSC 22000, uye tinoshandisa kudzora maitiro ekuverenga uye nzira dzakasimba dzekusimbisa hunhu kuti tive nechokwadi chekuti batch yega yega yakafanana. Chitupa chekuongorora (COA) chinosanganisirwa mupakeji yega yega. Chinoronga zvinhu gumi nezvisere zvemhando, zvakaita sekuchena, huwandu hwechloride, miganhu yesimbi inorema, uye kugadzikana kwepH.

Kusvika kwenzvimbo kune simba guru pahurongwa hwemapurojekiti. Nemafekitori matatu akaiswa zvakanaka munzvimbo dzekugadzira dzeSouthern, Eastern, neNorthern uye ane matani anopfuura mazana mashanu, tinogona kuvimbisa nguva yekutumira yemazuva manomwe kusvika gumi muUnited States yese. Izvi zvinobvisa kunonoka kwemavhiki mana kusvika matanhatu kunouya nekushandisa nzira dzekunze chete. Izvi zvinodzivirira mapurojekiti anodhura kuti asamire kana kudiwa kwacho kuchikwira kamwe kamwe.

Huwandu Hweodha Hushoma uye Mhando dzeMitengo

Tinoziva kuti huwandu hwekongiri inoshandiswa hunochinja zvakanyanya zvichienderana nekuti basa rinotanga riini uye kuti kudiwa kwacho kunochinja sei nemwaka. Huwandu hwematani mashanu hunowanzo shandiswa hunoshanda kumabhizinesi epakati nepakati uye kuvaka zvivakwa zvikuru pasina kuvabhadharisa mari yakawanda kuti varambe vaine zvinhu zviripo. Sarudzo dzekutakura matangi akawanda (matani 20-25) dzinopa mari yakawanda kune vatengi vanotenga akawanda, nepo mabhegi e25 kg nemakontena epakati (IBCs) zvichibatsira vagadziri vezvigadzirwa zvemhando yepamusoro vanoda maSKU akasiyana-siyana.

Kuenzanisa Rutsigiro rweUnyanzvi uye Basa reKutengesa Mushure meKutengesa

Nemitengo yakananga kubva kufekitori, hapana purofiti kune vanogovera, izvo zvinowanzo wedzera mitengo ne20–40%. Izvi zvinogadzirisa zvakananga dambudziko rekutenga kwemitengo yepakati-munhu. Matanho emitengo yemutengo wemari inobhadhara zvibvumirano zvegore negore uku ichichengetedza kuchinjika kuburikidza nezvirongwa zvekota zvechokwadi zvinogadzirisa kushandiswa chaiko. Chimiro ichi chinonyanya kukosheswa nemakambani eEPC ane maitiro ekuda akavakirwa pamapurojekiti.

Zvinoda zvinopfuura kungoendesa zvigadzirwa kuti musanganiswa ubudirire. Chikwata chedu cherubatsiro rwehunyanzvi hwepasi rose chinobatsira nekuverenga dhizaini yemusanganiswa, kuchinja dose panzvimbo, uye kugadzirisa matambudziko anoitika kana seti ikasaita sezvainofanira kuita. Tinopa sampuro dzemahara (5–10 kg) dzekusimbisa batch yekuedza nemidziyo yevatengi vedu yemuno uye masosi esimende. Iri ibasa rakakosha nekuti makemikari ezvinhu zvinogona kusiyana kubva panzvimbo nenzvimbo, izvo zvinogona kukanganisa mashandiro anoita musanganiswa.

Kuchengetedzwa kwemakemikari ekongiri, hupenyu hwesherufu, uye maitiro akanakisa

Kana zvinhu zvakasanganiswa zvichishandiswa mumaindasitiri, zvinofanira kuchengetwa uye kubatwa nenzira inodzivirira hutano hwevashandi pamwe nekushanda kwezvigadzirwa mukati meketani yese yekugovera.

Kubata Maitiro Ekushanda uye Kudzivirirwa Kwevashandi

Zvichienzaniswa nedzimwe nzira, zvigadzirwa zvemakemikari zvinodzivirira sodium gluconate-based concrete retarder zvine njodzi yakaderera pakubata. Nekuti ihupfu hwakasimba, haikanganisi sezvinoita liquid acids, uye pH yayo inenge isina kusimba (6.2–7.8 mu solution) inodzivirira ganda rako nemaziso kuti asatsamwiswe sezvinoita alkaline additives. Mazano ekushandisa michina yekuchengetedza zvinosanganisira maguvhu ekubata mabhegi nemagirovhosi ekubata ganda kwenguva refu. Vashandi vemafekitori ekugadzira machira vanotoziva mitemo iyi.

Kuchengetedza Mamiriro uye Sherufu Hupenyu Management

Matanho ekudzivirira kudonha kwemvura akafanana neemamwe makemikari akaoma. Nekuti chigadzirwa ichi chinonyungudika nyore nyore mumvura, zvikanganiso zvinogona kucheneswa uye kushandiswazve kana zvisina kusvibiswa. Izvi zvinoderedza kurasikirwa kwezvinhu. Nzvimbo yacho haikanganisike zvakanyanya nekuti makemikari anopwanyika nekukurumidza. Zvisinei, kudonha kukuru kwemvura pedyo nenzira dzemvura kunofanirwa kudzorwa zvichienderana nemaitiro enguva dzose ekugadzirisa makemikari kudzivirira shanduko dzepH munzvimbo yacho.

Kana chikafu chakachengetwa zvakanaka, chinogona kugara kwemwedzi 24 kusvika 36 chisati chamira kushanda. Kuti chichengetwe, tembiricha inofanira kugara pakati pe5°C ne35°C uye hunyoro hunofanira kugara pasi pe65% kudzivirira kunyungudika kwemvura kunogona kukonzera kubikwa. Tinokurudzira kuisa mabhegi asingapfuure mashanu papallet (tichishandisa 25 kg yekurongedza) uye kutenderedza muunganidzwa wako kamwe chete pamwedzi kuti uve nechokwadi chekuti zvinhu zvekare zvapera kutanga.

Mhedzisiro Pakureba Kwekurapwa Kwemushonga Uye Kugara Kwenguva Refu

Guruva resimende nezvimwe zvidimbu zvinobva mumuchina wekusanganisa hazvigone kupinda mumidziyo yakavharwa. Mushure mekuvhurwa, mabhegi anofanira kuvharwa zvakare kana kuti zviri mukati zvinofanira kutamiswa kunzvimbo dzinotakura zvinhu zvisinganyorove. Kuongororwa kwehunhu, uko kunogona kuva nyore sekutarisa pH uye kuchena kwechigadzirwa uchishandisa maturusi emurabhoritari, kunogona kusimbisa kuti chigadzirwa chichiri kushanda kunyangwe chiri kukwegura. Zvisinei, kuchengetedza zvakanaka kunowanzoita kuti chigadzirwa chienderane zvizere nezvinodiwa zvese zvenguva yese yekushanda.

Dambudziko rinowanzoitika rehunyanzvi rinogona kugadziriswa nekuona hukama huripo pakati pekunonoka uye kukura kwesimba. Kunyudza kwekupedzisira kunotora nguva yakafanana nekongiri isina kudzoserwa, asi maitiro ekutanga ekuisa kongiri anotora maawa maviri kusvika mana ekuwedzera pahuwandu hwakajairika. Simba remazuva manomwe rinowanzosvika 70-75% yehuwandu hwemazuva makumi maviri nemasere, izvo zvakakwana kune akawanda mashandisirwo ekuvaka anoda kubviswa kwechimiro nekukurumidza kana mushure mekusimba kwesimba.

mhedziso

Kana wava nyanzvi yetekinoroji yekunonoka kweseti, kuisa pasi zvimiso zvekongiri kunova kumhanya nenguva uye kunova nzira inodzorwa, inotarisa mhando. Kusanganiswa kwemakemikari ekongiri anodzora sodium gluconate kunobatanidza kuvimbika kwekushanda, mutoro wezvakatipoteredza, uye kushanda zvakanaka kwemari. Izvi zvinogadzirisa matambudziko makuru ane vatariri vekutenga, nyanzvi dzehunyanzvi, uye vanoronga mapurojekiti panguva imwe chete. Kemikari iyi yakakwana kune vavaki vekuvaka, vagadziri vekugadzirira, uye vagadziri ve precast vanofanirwa kubata nemapurojekiti anova akaoma nekuti ane macurve ekunonoka anofanotaurwa, anoshanda nemasisitimu ekongiri aripo, uye anogona kupihwa chitupa nenzira mbiri dzakasiyana. Makambani anogona kubvisa matambudziko emhando yepamusoro uye kupa matambudziko anotyisidzira kubudirira kwepurojekiti nekushanda nevapi vemabhizinesi vanopa zviyero zvekugadzira zvemhando yepamusoro, kutumira nekukurumidza, uye masevhisi ekutsigira akazara.

FAQ

Ko mwero wakawandisa wekongiri unodzivisa here kuoma kwekongiri zvachose?

Kana ukanwa zvakanyanya, chikamu chepurasitiki chinogona kugara kwemazuva akati wandei, asi chero bedzi simende ikaramba yakanyorova, inozosvika pakusimba kwayo kwakazara. Sekutsvagurudza, kunonoka kwemvura kunowanzo tungamira kune zvimiro zvidiki zvakakora zvine simba rekupedzisira rekumanikidza kupfuura zvinosanganiswa zvekudzora.

Zvinogona here kusanganiswa nema superplasticizers musanganiswa mumwe chete?

Inoshanda zvakanaka ne polycarboxylate ether superplasticizers, asi ma test batches anofanirwa kuitwa kuti ive nechokwadi chekuti musanganiswa wakakodzera unochengetedza slump retention yakakodzera uye mapatani ekugadzirisa. Mamwe mavhezheni ane mabhenefiti anoshanda pamwe chete, zvinoreva kuti hapana chinodiwa che admixtures dzese dziri mbiri.

Kupisa kwemhepo kunokanganisa sei zvinodiwa pakuyera dosing?

Pane hukama huripo pakati pekupisa nekunonoka. Pakukwira kwega kwega kwekupisa kwekongiri ne10°C, mwero wehunyoro unopetwa kaviri. Kuchinja kwemuyero we0.03–0.05% pa5°C kunoita kuti nguva yekushanda ive yakafanana panzvimbo dzine mamiriro akasiyana. Zvisinei, zvinodiwa chaizvo zvinoenderana nekuti simende inoita sei uye zvinodiwa papurojekiti.

Batana neEverStar Group kuti uwane mishonga yemakemikari inochengetedza kongiri inochengetedza kongiri

EverStar Group yave ichigadzira zvinhu zvakasanganiswa kwemakore gumi nemana uye inogona kubatsira mapoka ekutenga kuwana mushonga wekongiri unodzivirira kongiri wakavimbika. Sodium gluconate yemhando yemishonga ine ≥98% yakachena inogadzirwa munzvimbo dzakatenderwa neISO 22000. Nzvimbo idzi dzinosanganawo nezvinodiwa neASTM C494, EN 934, FDA, HALAL, uye KOSHER. Tinochengeta zvinhu zvinopfuura 500 metric matani mumiti yakaiswa zvakanaka pedyo nezviteshi zvikuru. Izvi zvinotibvumira kutumira maodha akajairwa mumazuva matatu uye kugadzira mafomura akakosha anoshanda nekemikari yesimende kana nzvimbo dzemahombekombe dzine sulfate yakawanda munharaunda yako mumazuva mashanu kusvika manomwe.

Masevhisi edu eOEM/ODM anopfuura kungopa zvigadzirwa chete; mapoka edu ehunyanzvi anopa kuyedzwa kwemasampuro emahara nemidziyo yemuno, rubatsiro rwemaawa makumi maviri nemana pazuva, kudzidziswa panzvimbo, uye seti dzakazara dzemagwaro ane maturusi ekusanganisa uye mavhidhiyo ekushandisa. Unogona kuisa odha yematani mashanu chete, uye unogona kusarudza kubva kumhando dzakasiyana dzekurongedza, dzakadai semabhegi e25 kg, maIBC, uye matangi makuru. Kana ukatenga zvakananga kubva kufekitori, unogona kuchengetedza 20-40% kana uchienzaniswa nekutenga kuburikidza nevagovanisi. Tumira email ku info@cneverstar.com kuti uwane masampuro kana kutaura nezvekuti chigadzirwa chedu chebio-based, chinogona kudzokororwa nyore nyore chinogona kukubatsira sei kuti chirongwa chako chinotevera chezvivakwa chive nani ukuwo chichikubatsira kuzadzisa zvinangwa zvako zvekuchengetedza hupenyu.

References

1. Ramachandran, VS, Bhuku reMisanganiswa yeConcrete: Properties, Science, and Technology, Chinyorwa Chechipiri, Noyes Publications, 1995.

2. Kosmatka, SH, Kerkhoff, B., naPanarese, WC, Dhizaini uye Kudzora Misanganiswa yeKonkriti, Chinyorwa chechi14, Portland Cement Association, 2008.

3. Neville, AM, Properties of Concrete, Chinyorwa Chechishanu, Pearson Education Limited, 2011.

4. ASTM C494 / C494M-19, Tsananguro Yakajairika yeMakemikari Akasanganiswa eConcrete, ASTM International, West Conshohocken, PA, 2019.

5. Komiti yeACI 212, Mushumo weMakemikari Akasanganiswa neKonkriti (ACI 212.3R-16), American Concrete Institute, Farmington Hills, MI, 2016.

6. Jolicoeur, C. naSimard, MA, Kudyidzana kweChemical Admixture-Cement: Phenomenology uye Physico-Chemical Concepts, Cement and Concrete Composites, Vol. 20, 1998.

Zvinodzora kongiri zvinhu zvekuwedzera zvemakemikari zvinoderedza kunyorova kwemvura muzvinhu zvinosimbisa simende. Izvi zvinoita kuti kongiri ishande kwenguva yakareba uye zvinoimisa kuti isatsve nekukurumidza. Izvi zvinowedzerwa pakuvaka kwemazuva ano, kunyanya kumapurojekiti makuru ezvivakwa zvinoda kuiswa kwenguva yakareba. Izvi zvinoderedza kugadzikana kwekutanga nekwekupedzisira kwekuvaka pasina kukanganisa kusimba kwekuvaka kwenguva refu. Izvi zvinobvumira makondirakiti kubata nekudururwa kwakaoma mumamiriro ezvinhu akaoma, senge mumigwagwa inopisa yezhizha kana muzvivakwa zvakaoma zvinoda nguva chaiyo uye kuitwa kwakakwana.

Chii chinonzi Concrete Retarders uye Chinoshanda Sei?

Kutsanangura Zvinosanganiswa Zvisina Kushanda Mukuvaka Kwemazuva Ano

Zvinhu zvinodzoreredza kusanganiswa kwesimbi iboka remamorekuru emakemikari akagadzirwa kuti amise maitiro ekutanga anoita kuti simende iome. Izvi zvinowedzera nguva yekudzikisa, izvo zvakakosha nekuti panguva ino kongiri itsva ichiri nyore kushandisa uye iri nyore kushandisa. Maitiro aya anosanganisira kunamira pamusoro pezvidimbu zvesimende uye kugadzira zvipingamupinyi zvinomisa mvura nesimende kuti isashande kwenguva pfupi. Kunonoka uku kunodzorwa kunomisa kuumbwa kwemakristasi ecalcium silicate hydrate panguva dzezvikamu zvakakosha zvekuisa. Izvi zvinopa nguva yakakwana yekubatanidza, kupedzisa, uye kutumira pasina kuderedza simba rekupedzisira rekumanikidza kwechivako.

Kuumbwa kweMakemikari uye Kudyidzana kweHydration

Makemikari eHydroxycarboxylic acids, lignosulfonates, kana phosphate-based anoshandiswa mumabikirwo mazhinji. Hunhu hwe retarder huripo hunoratidzwa ne sodium gluconate, muenzaniso wakajairika we concrete retarders , upfu hwakasimba huchena hune ≥98.0% uye hune CAS number 527-07-1. Hunononotsa kugadzika kwe concrete kwemaawa maviri kusvika manomwe nenzira inogona kufanotaurwa uchishandisa dose-response graph iri pakati pe0.05% ne0.15% nehuremu. Izvi zvinobvisa njodzi dze flash-set dzaiuya nesarudzo dzekare zvichibva pa citric acid kana shuga. 10% solution ine pH range ye6.2–7.8, zvinoita kuti ienderane nePortland cement chemistry. Inewo chloride level yakaderera (≤0.05%), iyo inodzivirira simbi inosimbisa kubva mungura, inova chinhu chakakosha chekugara kwenguva refu kwezvivakwa.

Nzira Dzinoshanda dzeKushandisa Mapoka eSaiti

Kuti ushandise ma retarder ekongiri, anofanirwa kusanganiswa zvakanaka mukongiri panzvimbo yekusanganisa kana muchina wekusanganisa uri panzvimbo yacho. Sechikamu chekudzora kunaka, nzira dzekuongorora dzeASTM C403 dzinofanira kuteverwa. Nzira idzi dzinoyera nguva yekuisa nekudzivirira kupinda. Mainjiniya anoona huwandu nekutarisa tembiricha, rudzi rwesimende, uye kuti kumirira kunofanira kutora nguva yakareba sei. Kuti uve nechokwadi chekuti misanganiswa inoshanda zvakanyanya nePolycarboxylate Ether (PCE) superplasticizers inoenderana, bvunzo dzinofanirwa kuitwa kuti ive nechokwadi chekuti rheological igare zvakanaka. Magwaro akaita seCertificates of Analysis (COA), Safety Data Sheets (SDS), uye Technical Data Sheets (TDS) anobatsira pakusarudza kutenga nekuona kuti zvigadzirwa zvinoenderana nezvinodiwa neprojekiti uye mwero wekunze wekutevedzera.

Mhando dzeConcrete Retarders uye Mashandisirwo Adzo Akanakisisa

Mafomu echisikigo kana kuti ekugadzira

Zvishandiso zvechinyakare zvekongiri zvinobva mushuga yehuni yakanatswa uye lignosulfonates, uye zvinoshanda zvakanaka uye hazvidhuri zvakanyanya pakushandisa zuva nezuva. Zvinotsiva zvekugadzira, zvakaita sesodium gluconate, zvinoenderana uye zvinovimbika. Chechipiri chine zvinodiwa zvehunyanzvi, zvakaita sekurasikirwa nekuomeswa kuri pasi pe0.5%, sulfate iri pasi pe0.05%, uye heavy metals (Pb) iri pasi pe10 ppm. Izvi zvinodikanwa zvinoita kuti batch yega yega ive yakafanana, izvo zvakakosha pakudzora mhando mumapurojekiti makuru. Mafomula ekugadzira akasimbawo kana tembiricha dzichichinja, ndosaka vagadziri vakagadzirira kusanganisa vanoshanda munzvimbo dzakasiyana-siyana dzenzvimbo uko mamiriro ekunze anochinja zvakanyanya munguva yekuvaka vanosarudza ivo.

Maitiro Ekusarudza Maonero Emamiriro Ekunze

Kuti mvura iite concrete kana tembiricha iri pamusoro pe35°C, mushonga unodzivirira mvura wakasimba unodiwa kuti uderedze kumhanya kwemvura uye kunyorova. Mafomula akagadzirwa nehunyanzvi anodzivirira kushanda kwemvura kunyangwe mushure mekufamba kwenguva refu kubva kunzvimbo dzekubatanidza kuenda kunzvimbo dzebasa dziri kure, izvo zvinodzivirira majoini anotonhora kuti asaumbwe munzvimbo dzinogara dziripo. Kune rumwe rutivi, mashandisirwo anoshandiswa munzvimbo dzine mamiriro ekunze ari pakati nepakati anogona kushandisa mwero mudiki wekuyeresa kuti awane kunonoka kupfupi kunoshanda nehurongwa hwemazuva ese. Mapurojekiti egungwa anosangana nehuwandu hwakawanda hwe sulfate anobatsirwa nemafuta anodzivirira munyu uye anoshanda zvakanaka nezvinhu zvakaita se fly ash kana slag, izvo zvinoita kuti chimiro chigare kwenguva refu mumamiriro ekunze akaoma.

Kuenderana neSimende Mhando uye Mix Designs

Mabhizinesi anogadzira kongiri yakasanganiswa kare anoda zvinhu zvinodzora mashandiro anoshanda nemhando dzakasiyana dzesimende yePortland, dzakadai semhando dzerudzi rweType I/II dzinoshandiswa zvakanyanya uye dzinoramba kushandiswa nesulfate yerudzi rweV. Pakugadzira precast, vagadziri vanotarisa pakuwedzera zvinhu zvinochengetedza chimiro chayo chakasimba panguva yekubviswa kwesimbi. Kana kongiri yakawanda ikashandiswa mumadhamu kana maburiro ebhiriji, inofanirwa kusanganiswa nenzira inodzora kupisa kwemvura uye inomisa kupwanyika kwekupisa kuburikidza nemazinga e exothermic reaction. Kuziva misiyano iyi kunobatsira vatariri vekutenga kusarudza zvinhu zvinosangana nezvinodiwa zveprojekiti chaiyo. Izvi zvinogoneka nemapoka ekutsigira tekinoroji kubva kuvagadziri vanopa mazano ekugadzirisa dhizaini yakasanganiswa uye kudzidziswa panzvimbo yevashandi vekutonga mhando.

Mabhenefiti ekushandisa Concrete Retarders muGlobal Construction Projects

Kushandisa zvidziviriro zvekongiri nezvimwe zvinodzora seti nenzira yakarongwa kunoshandura mari nechimiro cheprojekiti. Mahwindo akareba anoshanda anochengetedza mari shoma yevashandi nekudzivirira vashandi kuti vasashande maawa ekuwedzera pamvura yakaoma inoda kushanda nguva dzose. Kubatanidzwa kwakawedzerwa kunobvisa huchi nemaburi, izvo zvinoita kuti nzvimbo yakapedzwa itaridzike zviri nani uye inowedzera huwandu hwechivakwa. Kana zvikatariswa mumapurojekiti makuru ezvivakwa, mabhenefiti aya ekushanda anowedzera kuchengetedza mari chaiyo.

Kuwedzera Kushanda Uye Kudzivirira Kutonhora Kwemajoini

Vagadziri vemakontrakita vanogona kuisa pasi zvikwiriso zvekongiri zvinodzokororwa mukati memahwindo akakosha ekubatanidza kana kuiswa kwacho kwanonoka. Izvi zvinobvisa mapurani asina kusimba anoderedza kusimba kwechivako. Izvi zvinobatsira zvikuru kuzvikamu zvirefu zvakaita semadziro ekuchengetedza kana kutsvedza, uko mhedzisiro yemhando yepamusoro inoenderana nekufambira mberi kuri kuitwa. Mafomula eEverStar Group akavakirwa pasodium gluconate akashandiswa mumapurojekiti akataura nezvekuwedzerwa kwekushanda kwemaawa matatu kusvika mashanu pachiyero che0.10%. Izvi zvinobvumira kupedzisa zvakanaka munzvimbo dzakakura ukuwo zvichichengetedza kugadzikana, izvo zvinoita kuti kupomba nekubatanidza mabasa zvive nyore.

Kuvandudza Kugara Kwenguva refu uye Kuvandudza Simba

Kana mvura ikanyanya kudzika, zvivako zvidiki zvinova zvakakora, zvakajairika, uye zvisingapindi mvura yakawanda. Izvi zvinoita kuti zvirambe zvichidzivirira kurwiswa kwechloride, kurwiswa kwesulfate, uye kunyungudika kwechando, zvese izvi zvinhu zvakakosha zvinosarudza kuti zvivakwa zvichagara kwenguva yakareba sei munzvimbo dzegungwa kana munyu. Kuongororwa kwerabhoritari kunoratidza kuti zvinhu zvinodzora mvura zvine mwero wakakodzera zvine mwero wekumanikidzwa kwemazuva makumi maviri nemasere wakakwira kupfuura 110% yemisanganiswa yekudzora. Izvi zvinosangana nezvinodiwa zveASTM C494 Type B. Zvivako zvinobva zvabuda zvinogara kwenguva refu nekufamba kwenguva, zvinoreva kuti zvinoda kugadziriswa kushoma uye zvinodhura zvishoma muhupenyu hwazvo hwese.

Mafungiro Ezvakatipoteredza uye Kusimba

Hunhu hwekuora kwechinhu mumafomura emazuva ano e c oncrete retarder hunosangana nezvinodiwa nezvinetso zviri kuwedzera zvezvakatipoteredza. Zvigadzirwa zvinosangana nemirayiridzo yeOECD 301E zvinoora zvishoma kana 90% mukati memazuva makumi maviri nemasere, zvinoreva kuti hazvina zvazvinoita panharaunda kana zvikagezwa kana kuburitswa netsaona. Fe³⁺ chelation iri nani pane chelators dzechinyakare dzakadai seEDTA pamazinga epH asina kusimba (>11), izvo zvinobatsira kuchenesa maitiro ekugadzira. Hunhu uhwu hunoenderana nezvinodiwa kuti uwane chitupa cheLEED uye nezvipikirwa zveESG zvemakambani. Izvi zvakakosha zvikuru kune vagadziri vanoda kuzivikanwa kwezvivakwa zvegirini kana kutevedzera mitemo munzvimbo idzo purojekiti ichakanganisa nharaunda.

Maitiro Ekusarudza Konkriti Yakakodzera Yepurojekiti Yako

Maitiro Ekushanda Akanangana Nepurojekiti

Danho rekutanga pakusarudza zvinhu zvinodzora kongiri nderekuona kuti kunonoka kwekuisa kunofanira kutora nguva yakareba sei zvichibva pane zvakaiswa uye nharaunda. Mainjiniya anoisa nguva yekuchengetedza chinangwa, zviyero zvesimba rekupedzisira, uye kuti zvinhu zvinoshanda sei nemapakeji ekusanganiswa ane zvinhu zvinoderedza mvura uye zvinhu zvinobata mhepo. Mapoka anotarisira kutenga zvinhu anotarisa zvitupa kubva kune vatengesi, vakaita seFCC, USP, BP, HALAL, KOSHER, uye ISO 9001, kuti ave nechokwadi chekuti vanotevedzera mitemo mumisika yese yekunze. Ma laboratori ekuongorora akazvimiririra akadai seSGS neIntertek anopa ruzivo rwekushanda kune vagadziri vanozivikanwa. Izvi zvinotsigira zvataurwa nehumbowo hwevamwe hunobatsira nekuongorora kwakakodzera.

Kuvimbika kweMutengesi uye Kugadzikana kweCheni yeKugovera

Kuti mapurojekiti ezvivakwa afambe zvakanaka, zvinhu zvinofanira kufamba nguva dzose uye nenguva nemapurani ekuvaka. Kunonoka kunodhura mari yakawanda kunogona kudzivirirwa nekutarisa kugona kwevatengesi kugadzira, masisitimu ekutarisira zvinhu, uye network dzekutakura. Nemafekitori akaiswa pedyo nezviteshi zvikuru uye kugona kwegore negore kweanopfuura matani 50,000, EverStar Group inoita shuwa kuti kune huwandu hwakagara huripo hwezvinhu zvakawanda. Zvinhu zvakajairika zvinotumirwa mukati memazuva matatu, uye mafomura akagadzirwa kuti akwane makemikari ehuwandu kana mamiriro e sulfate yakawanda munzvimbo iyi anotumirwa mukati memazuva mashanu kusvika manomwe. Kupindura uku, pamwe nerubatsiro rwenyanzvi rwunowanikwa maawa makumi maviri nemana pazuva, mazuva manomwe pasvondo mumitauro yakawanda, kunogadzirisa matambudziko ekuwana zvinhu ane makambani ekune dzimwe nyika nemakambani eEPC anoshanda pamapurojekiti akaoma, ane nguva.

Kuongorora Mari Nemabhenefiti Ekusarudza Kutenga

Nemitengo yefekitori yakananga, hapana mari inobhadharwa kune vamiririri, saka mitengo yakaderera ne20-40% pane nzira dzakajairwa dzekugovera. Kubatsira uku kwehupfumi kunokura kana zvinhu zvakawanda zvikatengwa panguva imwe chete, senge apo mapurojekiti ekuvaka anoda zviuru zvematani. Vatariri vekutenga vanoyera mitengo yeyuniti vachienzanisa nekufanotaura mashandiro uye vanosarudza vanopa masevhisi ane mapurogiramu emahara emuenzaniso anovabvumira kuedza kuenderana neaggregates dzemuno vasati vaisa maodha makuru. Kutanga pamatani mashanu, huwandu hushoma hweodha hunogona kubhadharwa nemapurojekiti makuru nevagovanisi vedunhu vachivaka masheya avo. Masisitimu emitengo yakajeka anoita kuti kuronga bhajeti nekuchengeta ruzivo rwemitengo zvive nyore muhupenyu hwese hwepurojekiti.

Maitiro Akanakisisa Ekushandisa Nekushandisa Zvidziviriro zveKonkriti

Kuverenga Chipimo uye Kusanganisa Maitiro

Kuti uwane muyero chaiwo, unofanirwa kuona huwandu hwemuchina wekuzadza sechikamu chehuwandu hwesimende. Izvi zvinowanzova pakati pe0.1% ne0.5% nehuremu hwezvinhu zvesimende (BWOC). Misanganiswa yekuedza panzvimbo iyi inosarudza mwero wakanakisa nekutarisa tembiricha, mashandiro anoita simende, uye nguva inofanirwa kubvumidzwa. Zvimwe zvinowedzerwa hazvifanirwe kuwedzerwa zvakananga kusimende yakaoma. Pane kudaro, zvinofanirwa kuwedzerwa panguva yekuzadza kana mushure mekusanganisa kwekutanga. Kupararira kwakajairika kunovimbiswa nekusanganisa zvinhu kweinenge masekondi makumi mapfumbamwe mushure mekunge zvawedzerwa. Mapoka ekuongorora hunhu anoramba achiona kurasikirwa kwemvura nekufamba kwenguva uye anonyora mhedzisiro kuitira kuti muyero ugone kuvandudzwa kuti ushande mune ramangwana uye kugara wakafanana munzvimbo dzinogara kwenguva inopfuura zuva rimwe.

Kudzivisa Matambudziko Anowanzoitwa

Kunyanyisa kushandisa mushonga ndicho chikanganiso chinowanzoitika, chinogona kuita kuti nguva yekuisa igare kwenguva refu kana kuti ikundikane zvachose, izvo zvinoda kugadziriswa kunodhura. Mhedzisiro yakadaro inogona kudzivirirwa nekutevera mirairo yemugadziri uye kuita bvunzo dzekudzivirira kupinda zvichienderana neASTM C403. Kana mhando dzekare dzelignosulfonate dzikasanganiswa nePCE superplasticizers, dzinogona kusashanda zvakanaka pamwe chete. Izvi zvinogona kukonzera kupatsanurwa kana kusagadzikana kwemhepo. Kusangana nematambudziko kunowanikwa panguva yekuyedzwa kwepre-qualification isati yashandiswa mumunda. Mamiriro ekuchengetera akakosha. Misanganiswa yemvura inofanira kuchengetwa munzvimbo dzisina chando, dzakadzivirirwa neUV dzinogara pakati pe5 ne35°C kuitira kuti makemikari asaputsike uye achinje mashandiro awo.

Kudzivirirwa uye Kuteerera Kuteerera

Nzira dzakajairika dzekubata makemikari munzvimbo dzinosanganisira kupfeka dziviriro yemaziso nemagurovhosi uye kuve nechokwadi chekuti pane mweya wakakwana panguva yekushanda kwekubatanidza. Mapepa eData rekuchengetedza anoratidza maitiro ekupa rubatsiro rwekutanga uye kuchenesa tsvina. Zvigadzirwa zvinosangana neFDA, REACH, uye mitemo yedunhu zvinobatsira kuona kuti mapurojekiti ekunze apedzwa nemazvo. Kutarisira zvakatipoteredza kunosanganisira kuchengetedza mvura yakasviba panzvimbo imwe uye kuibvisa nenzira inotevera mitemo yemuno. Kudzidziswa nguva dzose kwevashandi vemafekitori ekubatanidza nemapoka emunda kunochengetedza mitemo yekuchengetedza yakakwira uye kunoita kuti nzira dzakakodzera dzishandiswe. Kutevera matikiti emapoka, marekodhi emuyedzo, uye mhedzisiro yebvunzo dzemhando yepamusoro nemasisitimu emagwaro zvinogadzira nzira dzekuongorora dzinobatsira masisitimu ekutonga kwemhando yeISO 9001 uye kutarisa kutevedzera zvinodiwa zvepurojekiti.

mhedziso

Zvinhu zvinodzora seti zvakaita semakongiri ekugadzirisa kongiri zvave zvishandiso zvakakosha pakuvaka kwemazuva ano, zvichiita kuti zvikwanisike kuvaka zvivakwa zvakaoma izvo zvaisazokwanisika kana kutengwa neimwe nzira. Mabikirwo emazuva ano akaomarara zvikuru muhunyanzvi. Semuenzaniso, zvinhu zvakagadzirwa nesodium gluconate zvine ma curve e linear dose-response uye zvinogona kushandiswa mumaindasitiri mazhinji. Izvi zvinokonzerwa nekufambira mberi kwemakumi emakore muinjiniya yemakemikari. Zvinobatsira kuti vashandi vekutenga vanzwisise misiyano iyi kuitira kuti vagone kusarudza vanopa zvigadzirwa zvakawanda, ruzivo rwehunyanzvi, uye nzira dzebasa dzinoenderana. Sezvo zvinodiwa zvepasi rose zvezvivakwa zvichikura uye vanhu vachinyanya kunetseka nezvekuchengetedzwa kwezvinhu, zvakakosha kupfuura kare kuwana vabatsiri vaunogona kuvimba navo vanogona kupa mhando dzakafanana, kugona kugadzirisa, uye rutsigiro rwakazara kwenguva yese yepurojekiti.

FAQ

Kunonoka kunoderedza simba rekongiri here?

Kana zvikashandiswa nehuwandu hwakakodzera, zvinowedzerwa zvinononoka zvinochengetedza kana kuvandudza simba rekumanikidzwa kwemazuva makumi maviri nemasere. Maitiro ekunyorovesa mvura anononoka anoita kuti maumbirwo ekristaro ave akafanana, izvo zvinowanzo tungamira ku110–115% yesimba rekudzora rinodiwa neASTM C494. Pamazuva manomwe, makumi maviri nemasere, uye makumi mapfumbamwe, bvunzo dzesimba dzinoratidza maitiro ekushanda anotsigira fungidziro dzakaitwa panguva yekugadzira.

Ndezvipi zvingasarudzwa zvekupora mushure mekunwa mushonga wakawandisa netsaona?

Kana munhu akanyanya kunwa doro zvakanyanya, anoda rubatsiro rwenyanzvi. Sarudzo dzinosanganisira kurega richipora kwenguva yakareba patembiricha inodzorwa uye hunyoro, kuwedzera zvinhu zvinokurumidzisa maitiro ekutsiva kunonoka, kana, kana zvakanyanya kuipa, kubvisa nekutsiva chinhu chacho. Sarudzo dzakavakirwa pakutevera nguva dzose kuburikidza nekuyedza kuchengetedza. Kudzivirira kuburikidza nekusanganisa nemazvo uye kudzidziswa kwevashandi ndiyo nzira yakanakisa yekuita zvinhu.

Ndingaite sei kuti ndione kuti zvinhu zvinoenderana nezvinodiwa nemutengesi wangu wesimende?

Kumbira bvunzo dzeboka remuenzaniso uchishandisa rudzi rwesimende, zvinhu, uye pasuru yakazara yekusanganisa yaunoda kushandisa. Sekurairwa neASTM C403, edza kuchengetedza kudonha kwemvura kwemaminitsi makumi matatu ega ega kwemaawa mana uye nyora nguva yekuiswa kwayo. Paunenge uchishandisa zvigadzirwa zvinopinza mhepo, enzanisa kuti mhepo yakadzikama zvakadii. Vamiriri vehunyanzvi vanobva kumakambani ane mukurumbira varipo kuti vabatsire nemiedzo iyi mahara.

Batana neEverStar Group kuti uwane Reliable Concrete Retarder Supply

Tinoziva kuti zvakaoma sei kuti manejimendi ekutenga awane admixtures dzakavimbika uye dzinoshanda zvakanaka dzinoenderana nezvinodiwa chaizvo zvepurojekiti. EverStar Group yave ichigadzira zvinhu kwemakore gumi nemana uye ine zvitupa zvakawanda, zvakaita seASTM C494, EN 934, REACH, HALAL, uye KOSHER. Vane vatengi munyika dzinopfuura makumi mashanu, kusanganisira makambani eFortune 500 nevatungamiriri muminda yavo. Zvigadzirwa zvedu zve sodium gluconate zvinoshanda sezvaitarisirwa, uye nekuti zvinobva mufekitori, unogona kuchengetedza 20–40% kana uchienzaniswa nekutenga kubva kune mamwe makambani. Tumira timu yedu email pa info@cneverstar.com kuti uwane sampuro dzemahara dzinoshanda nezvinhu zvako, taura nezvekugadzirisa OEM/ODM kuti zvishandiswe, kana kutarisa sarudzo dzekutenga zvakawanda zvinotangira pamatani mashanu. Shanyira everstargroup.cn kuti uwane magwaro ehunyanzvi uye macalculator ekusanganisa uye ubatane nemapoka ekutsigira emitauro yakawanda akagadzirira kukubatsira kuita sarudzo dzakanakisa nezvehurongwa hwako hwe admixture.

References

1. Ramachandran, VS, Malhotra, VM, Jolicoeur, C., naSpiratos, N. (1998). Superplasticizers: Zvimiro uye Mashandisirwo muConcrete . Ottawa: CANMET.

2. Dodson, VH (1990). Zvisanganiswa zvekongiri . New York: Van Nostrand Reinhold.

3. Rixom, R. naMailvaganam, N. (1999). Kusanganiswa kwemakemikari ekongiri . London: E & FN Spon.

4. American Society for Testing and Materials (2020). ASTM C494: Standard Specification yeChemical Admixtures yeConcrete . West Conshohocken: ASTM International.

5. Neville, AM naBrooks, JJ (2010). Concrete Technology . Essex: Pearson Education Limited.

6. Aitcin, PC (2016). Sainzi neTekinoroji yeConcrete Admixtures . Cambridge: Woodhead Publishing.