How Hydroxypropyl methyl cellulose (HPMC) improves mortar properties

In ready-mixed mortar, Hydroxypropyl methyl cellulose is a main additive that can significantly improve the performance of wet mortar and affect the construction performance of mortar, although the addition amount is very low. Reasonable selection of hydroxypropyl methyl cellulose with different varieties, different viscosities, different particle sizes, different degrees of viscosity and added amounts will have a positive impact on the improvement of the performance of dry powder mortar.

The production of hydroxypropyl methyl cellulose is mainly processed from natural fibers through alkali dissolution, grafting reaction (etherification), washing, drying, submersion and other processes. In the production of building materials, especially dry powder mortar, hydroxypropyl methyl cellulose plays an irreplaceable role, especially in the production of special mortar (modified mortar), it is an indispensable and important component. Hydroxypropyl methyl cellulose plays the role of water retention, thickening, delaying cement hydration power, and improving construction performance. Good water retention capacity makes cement hydration more complete, can improve the wet viscosity of wet mortar, increase the bonding strength of mortar, and adjust the time. Adding hydroxypropyl methyl cellulose to mechanical spraying mortar can improve the spraying or pumping performance of the mortar, as well as the structural strength. Hydroxypropyl methyl cellulose is being widely used as an important additive in ready-mixed mortar.