Self-leveling mortar can rely on its own weight to form a flat, smooth and strong foundation on the substrate for laying or bonding other materials. At the same time, it can carry out large-scale and efficient construction. Therefore, high fluidity is a very significant aspect of self-leveling mortar In addition, it must have certain water retention and bonding strength, no water segregation phenomenon, and have the characteristics of heat insulation and low temperature rise.
Generally, self-leveling mortar requires good fluidity. Cellulose ether is a main additive of ready-mixed mortar. Although the amount added is very low, it can significantly improve the performance of mortar. It can improve the consistency, workability and bonding of mortar. performance and water retention. It plays a very important role in the field of ready-mixed mortar.
Cellulose ether has an important influence on the water retention, consistency and construction performance of self-leveling mortar. Especially as a self-leveling mortar, fluidity is one of the main indicators for evaluating self-leveling performance. Under the premise of ensuring the normal composition of the mortar, the fluidity of the mortar can be adjusted by changing the amount of cellulose ether. However, if the dosage is too high, the fluidity of the mortar will be reduced, so the dosage of cellulose ether should be controlled within a reasonable range.
The water retention of mortar is an important index to measure the stability of the internal components of freshly mixed cement mortar. In order to fully carry out the hydration reaction of the gel material, a reasonable amount of cellulose ether can maintain the moisture in the mortar for a long time. Generally speaking, the water retention rate of slurry increases with the increase of cellulose ether content. The water retention effect of cellulose ether can prevent the substrate from absorbing too much water too quickly, and hinder the evaporation of water, so as to ensure that the slurry environment provides sufficient water for cement hydration. In addition, the viscosity of cellulose ether also has a great influence on the water retention of mortar. The higher the viscosity, the better the water retention. Generally, cellulose ether with a viscosity of 400mpa.s is mostly used in self-leveling mortar, which can improve the leveling performance of the mortar and increase the compactness of the mortar.
Post time: Mar-20-2023