polycarboxylate superplasticizer(PCE) for gypsum-based grouting mortar

polycarboxylate superplasticizeris (PCE)an indispensable core high-molecular admixture in the field of high-performance gypsum-based grouting mortar. It is mostly white to light yellow powder, with fine particles, excellent dispersibility, easy solubility in water and fast dissolution speed. Relying on its unique comb-shaped molecular structure and highly efficient steric hindrant dispersion mechanism, polycarboxylate superplasticizer demonstrates a crucial and comprehensive technical role in gypsum-based grouting mortar:

1. It can significantly reduce the water requirement of mortar, break the flocculation structure of gypsum particles, release the free water contained within, greatly enhance the initial fluidity and fluidity of the slurry, and ensure the construction characteristics of "high fluidity and self-compactness" of grouting mortar.

2. Effectively control the loss of fluidity over time, avoid bleeding, segregation and stratification problems, and ensure the stability of the slurry and the uniformity of filling during long-distance transportation and large-scale grouting.

3. It can optimize the microscopic crystal morphology and pore structure of gypsum hardened body, promote dense crystal lap, significantly enhance the compressive and flexural strength and density of the hardened body, improve water resistance and durability, and also regulate the hydration rate of gypsum through mild retarding effect, avoid false setting and flash setting, and meet the time requirements of complex grouting processes.

4. Good compatibility: In the gypsum-based grouting mortar formula system, it has excellent compatibility with gypsum, cement, retarders, water-retaining agents, defoamers and other components, and is a key functional admixture for achieving the core performance of "low water high flow, dense early strength, durability and crack resistance" of grouting mortar.

Summary：Polycarboxylate superplasticizer is the core admixture for self-leveling mortar to achieve high flow, fast hardening and early strength, as well as smoothness without cracking