polycarboxylate superplasticizer for RMC

Principle of action of water reducer: Superplasticizers are usually surfactants of the anionic type. It is adsorbed on the surface of the cement particles so that the particles show electrical properties, and the particles repel each other due to the same charge, so that the cement particles are dispersed and the excess water between the particles is released and the water reduction effect is produced. On the other hand, due to the addition of water-reducing agent, the surface of the cement particles formed an adsorption film, affecting the hydration rate of cement, so that the growth of cement crystals is more perfect, reduce the capillary gap of water evaporation, the network structure is more dense, and improve the hardness and structural density of cement mortar. It is divided into the following steps: Dispersion: After mixing cement with water, due to the action of molecular gravity of cement particles, the cement slurry forms a flocculating structure, so that 10% to 30% of the mi…