How Do Admixtures Improve GRC Performance? Which Admixtures Are Prohibited? Chemical Additive Technology and Qinglong Group Application Guide

Admixtures are key components for improving GRC workability, durability, and functionality, and their proper use can significantly enhance material performance. Through 28 years of R&D, Qinglong Group has developed scientific application solutions for admixtures such as polycarboxylate water reducers, polymer emulsions, and retarders, achieving a GRC slump of 200-250mm and impact resistance ≥10kJ/m². At the same time, we explicitly prohibit harmful admixtures containing chlorides, nitrates, and similar substances to ensure our products are environmentally friendly and safe. In the Shenzhen Yirui Biotechnology Building project, optimizing the admixture system increased GRC curtain wall installation efficiency by 30%.

Beneficial Admixtures and Their Functions

Polycarboxylate high-range water reducers (water reduction rate ≥30%) can lower the water-binder ratio to 0.30-0.35 and increase strength by more than 20%. Polymer emulsions (such as acrylic emulsion) at a dosage of 3-5% improve toughness by 50% and double impermeability. Retarders are used for summer construction, extending workable time to 2 hours. Qinglong Group maximizes the synergistic effects of admixtures through compounding technology.

List of Prohibited Admixtures

Chloride-containing admixtures (such as CaCl₂) are strictly prohibited, as they cause steel reinforcement corrosion. Early-strength agents such as nitrates and nitrites can easily trigger alkali-aggregate reactions. Qinglong Group prohibits any admixture that may cause crystallization, preventing volume expansion. We have established a whitelist of admixture suppliers to ensure reliable sourcing.

Qinglong Group's Application Practice

We preferentially select admixtures from brands such as BASF and Sika, and conduct compatibility tests on every batch. Through 28 years of accumulated experience, we have built an admixture database to customize optimal formulations for different projects.