A certain amount of hydroxypropyl methylcellulose ether keeps the water in the mortar for enough time to promote the continuous hydration of the cement and improve the adhesion between the mortar and the substrate.
Effect of Particle Size and Mixing Time of Hydroxypropyl Methyl Cellulose Ether on Water Retention
The water retention capacity of mortar is largely controlled by the dissolution time, and the finer cellulose dissolves faster, and the faster the water retention capacity is. For mechanized construction, due to time constraints, the choice of cellulose must be a finer powder. For hand plastering, a fine powder will do.
Effect of Etherification Degree and Temperature of Hydroxypropyl Methyl Cellulose Ether on Water Retention
The solubility and temperature of hydroxypropyl methylcellulose in water depend on the degree of etherification. As the outside temperature rises, the water retention decreases; the higher the degree of etherification, the better the water retention of cellulose ether.
Effect of hydroxypropyl methylcellulose ether on the consistency and slip resistance of mortar
The consistency and anti-sliding property of mortar are very important indicators, both for thick layer construction and tile adhesive need suitable consistency and anti-sliding property.
Consistency test method, determined according to JG/J70-2009 standard
Consistency and slip resistance are mainly realized by the viscosity and particle size of hydroxypropyl methylcellulose. With the increase of viscosity and content, the consistency of mortar increases; the finer the particle size, the higher the initial consistency of freshly mixed mortar. quick.
Effect of Hydroxypropyl Methyl Cellulose on Air Entrainment of Mortar
Due to the addition of hydroxypropyl methylcellulose in the mortar, a certain amount of tiny, uniform and stable air bubbles are introduced into the freshly mixed mortar. Due to the ball effect, the mortar has good constructability and reduces the shrinkage and torsion of the mortar. Cracks, and increase the output rate of mortar. Cellulose has an air-entraining function. When adding cellulose, consider the dosage, viscosity (too high viscosity will affect the workability), and air-entraining properties. Choose cellulose for different mortars.
Post time: Mar-29-2023