In ready-mixed mortar, cellulose ether is added in very low amount, but can significantly improve the performance of wet mortar, is a kind of main additives affecting the construction performance of mortar. Reasonable selection of different varieties, different viscosities, different particle sizes, different degrees of viscosity and the amount of cellulose ether added to the dry mortar performance improvement to produce and play a positive impact.
Currently, many masonry and plastering mortars have poor water retention properties, and water slurry separation occurs after a few minutes of slight standing. Water retention is an important performance of methyl cellulose ether, and it is also a performance of concern to many domestic dry mortar manufacturers, especially those in the southern region with higher temperatures. Factors affecting the water retention effect of dry mortar include the amount of MC added, MC viscosity, fineness of particles and the temperature of the use environment.
In ready-mixed mortar, cellulose ether plays the roles of water retention, thickening, delaying the hydration power of cement and improving the construction performance. Good water retention capacity makes the hydration of cement more complete, can improve the wet adhesion of wet mortar, improve the bond strength of mortar, can be adjusted time. The addition of cellulose ether to mechanically sprayed mortar can improve the spraying or pumping performance of the mortar, as well as the structural strength. Therefore cellulose ether is being widely used as an important additive in ready-mixed mortar.