The role of adding polyacrylamide to cement mortar and concrete

Release time:

Dec 25,2023

Concrete and cement mortar are one of the most widely used and widely used building materials in the world. They have the advantages of low price, simple production process, wide use and strong adaptability. However, ordinary cement mortar and concrete are essentially non-uniform porous materials, which are easily affected by external corrosive media such as carbon dioxide, water, sulfates, chloride ions, etc., and the concrete will be destroyed quickly. The service life is greatly shortened. Polyacrylamide used in cement concrete can improve the durability of concrete, reduce the permeability of concrete, and improve the resistance of Portland cement hydration products to chemical attack.

Adding polyacrylamide (PAM) to cement mortar can fill pores and significantly improve the water retention, fluidity, adhesion, durability, chemical resistance and ductility of cement-based materials.

Adding polyacrylamide (PAM) to concrete can reduce the brittleness of concrete, improve the flexibility of concrete, and increase the shrinkage of concrete. The flexural strength, interlayer bond strength, durability and flexural toughness of concrete are significantly higher than ordinary concrete. Polyacrylamide (PAM) can improve the impermeability of concrete. Test results show that the impermeability of concrete added with PAM is increased by 90%, and the interlayer bonding strength is nearly 400% higher than that of ordinary concrete.

In the construction industry, polyacrylamide (PAM) is widely used as a concrete additive. It can effectively improve the interaction between concrete particles, thereby improving the strength and toughness of concrete. In addition to being used in concrete, polyacrylamide is also widely used in building materials such as putty powder and mortar king. It mainly plays the roles of flocculation, water retention, thickening, bonding, and lubrication. In addition, it is also used in other building materials. Because polyacrylamide has ultra-high viscosity and special molecular structure, it has good water retention effect. It is more commonly used as putty powder thickener, fire-resistant adhesive, and mortar thickening and water retention agent etc..