Concrete Set Retarder

Concrete Set Retarder – Professional Solution for Extended Workability 

When you're working with concrete in hot weather or managing long-distance transportation, you need reliable control over setting times. That's where Concrete Set Retarder becomes essential. Our high-purity admixture is specifically formulated to regulate the hydration process of cementitious materials by temporarily inhibiting crystal nucleation on cement particle surfaces. Unlike traditional sugar-based alternatives, this product delivers predictable, linear retardation that's directly proportional to dosage. You get consistent performance whether you're pouring mass concrete foundations, transporting ready-mix across long distances, or working in temperatures exceeding 35°C. Available in Industrial Grade (≥98%) and Food Grade (≥99%). Food-grade production lines are certified to ISO22000 and FSSC22000 standards. Every batch undergoes full quality testing and is supplied with a COA.

EverStar Group brings you over 13 years of chemical manufacturing expertise, factory-direct pricing, and reliable supply from our 5,000+ ton inventory capacity.​​​​​​​

Technical Specifications

Note: Product specifications may be adjusted during product iteration and optimization. Please submit your inquiry to us for the latest data and official COA documents.

Key Performance FeaturesPrecise and Controllable Retarding Performance

Sodium gluconate powder temporarily coats cement particle nuclei and inhibits hydration without stopping the hydration reaction. At a dosage of 0.03%–0.15%, it provides stable and predictable setting control,

making it ideal for high-temperature construction, long-distance concrete transportation, and mass concrete projects.

Extended Workability Window

At 30–35°C, a dosage of 0.1% can extend concrete working time by approximately 2–4 hours. Performance is verified through ASTM C403 penetration testing, helping contractors better manage project schedules

and placement operations.

Improved Long-Term Strength Development

Under the same slump conditions, slight water reduction can increase 28-day compressive strength to 110–120% of the reference concrete. When water dosage remains unchanged, early strength may decrease

slightly while 28-day strength remains comparable to the control sample

Environmentally Friendly and Biodegradable

Produced through bio-fermentation technology, the product meets OECD 301E biodegradability requirements, achieving over 90% biodegradation within 28 days. It complies with EU Ecolabel and Nordic Swan

environmental standards and has a significantly lower carbon footprint than EDTA and NTA-based chelating agents.

Excellent Chelating Performance

Under the same slump conditions, slight water reduction can increase 28-day compressive strength to 110–120% of the reference concrete. When water dosage remains unchanged, early strength may decrease

slightly while 28-day strength remains comparable to the control sample

Consistent Quality and Reliable Supply

Available in Industrial Grade (≥98%) and Food Grade (≥99%). Food-grade production lines are certified to ISO22000 and FSSC22000 standards. Every batch undergoes full quality testing and is supplied with a COA.

Why Choose EverStar's Concrete Set Retarder?

One Product, Multiple Revenue Streams

Development Greatness: You get direct, unsurprising impediment with zero flash-set chance at any dose level. Idealize for mass concrete, high-rise pumping, and hot climate applications.

Industrial Flexibility: Predominant chelating properties make this perfect for water treatment and mechanical cleaning formulations.

Food & Pharma Compliance: Full FCC/USP/BP monograph compliance opens worldwide showcase openings for you.

Cost-Effective Performance

Save 20-40% compared to competing chelators whereas accomplishing comparable or way better execution. Factory-direct estimating from our possess fabricating offices kills go between markups.

Eco-Friendly Profile

Readily biodegradable with negligible natural affect. You meet progressively rigid green building necessities without execution compromises.

Primary Applications

Mass Concrete Projects

When you're pouring foundations over 2 meters thick, dams, or bridge piers, controlling the thermal peak is critical. The Concrete Set Retarder delays hydration heat generation, preventing thermal gradients that cause structural cracking. You achieve monolithic pours with perfect layer-to-layer bonding.

Long-Haul Ready-Mix Transport

If your clumping plant is found distant from the work location, or you're confronting overwhelming activity conditions, this admixture jam rheology and droop. Concrete clumped at 180mm droop arrives workable and pumpable after 2+ hours of transport time.

Hot Weather Concreting

In tropical climates or summer conditions, fast dissipation causes untimely surface setting. You get amplified wrapping up time for appropriate texturing, joint arrangement, and surface medications. Plastic shrinkage splits ended up preventable.

High-Rise Pumping Operations

When pumping concrete over 100 meters, keeping up workability is fundamental. This retarder guarantees your blend remains pumpable all through the whole pumping operation, diminishing hardware blockages and work delays.

FAQ

Q: What happens if the dosage is accidentally exceeded?

A: ≤0.2%: Final strength remains largely unaffected with proper curing;0.2%–0.3%: Setting may be delayed by 24–48 hours, with significant reduction in early strength and approximately 5–10% reduction in 28-day

strength;＞0.3%: Severe overdosing may cause extremely long setting times and potential structural rejection.

Q: Is it compatible with PCE polycarboxylate superplasticizers?

A: Yes. It is fully compatible and can provide synergistic benefits in water reduction and slump retention formulations.

Q: Does it affect concrete air content?

A: For non-air-entraining systems, air content fluctuation is typically less than 1%. Trial mixing is recommended when used with air-entraining admixtures.

Q: How should dosage be adjusted based on temperature?

A: Using 20°C as the baseline, increase dosage by approximately 0.02%–0.05% for every 5°C increase in ambient temperature.

Q: How should the product be added during mixing?

A: The powder should be dissolved in mixing water before addition. Direct mixing with cement is not recommended, as it may result in uneven dispersion and localized softening.

Q: What are the storage conditions and shelf life?

A: Store in a cool, dry place at 5–40°C, protected from moisture and freezing. Shelf life is 12 months.

Q: What Certifications and compliance standards are available?

A: Industrial grade products comply with REACH and ISO9001 standards. Food grade products comply with FCC, USP, BP, HALAL, and KOSHER requirements.

Q: ​​​​​​​Can customized formulations be provided?

A: Yes. Customized particle sizes, purity levels, and compound formulations are available. Sample development can be completed within 24 hours.

Why Partner with EverStar Group?

Manufacturing Excellence

Our progressed chemical fabricating offices include large-scale mechanized generation lines. You advantage from steady batch-to-batch consistency and adaptable arrange quantities—from trial clumps to full holder loads.

R&D Support

Our in-house research facility offers 24-hour custom definition advancement. Require a custom fitted arrangement for interesting venture prerequisites? Our chemical engineers give quick test advancement and testing support.

Global Supply Reliability

We serve clients in 50+ nations with 99.5% on-time conveyance execution. Our 5,000+ ton on-site stock guarantees you never confront extend delays due to fabric shortages.

Technical Expertise

You get committed account supervisors giving one-on-one bolster all through your extend lifecycle. From item discussion to after-sales specialized help, our experienced group guarantees your success.

Quality Assurance

Every group experiences comprehensive quality control from crude fabric review to last item investigation. Progressed testing hardware and thorough research facility strategies ensure reliable execution.

Order Information & Contact

Ready to improve your concrete workability control with Concrete Set Retarder?

Email: info@cneverstar.com​​​​​​​