The Role of Rubber Powder in Putty and Waterproof Mortar
Release Time:
2019-08-05
Source:
Putty powder is an indispensable decorative material in interior renovation; it serves as a base coat for leveling and repairing wall surfaces, providing a solid foundation for subsequent decorative finishes. Applying putty powder ensures a smooth, even surface, which facilitates the seamless execution of subsequent decoration work.
Putty powder is an indispensable decorative material in interior decoration; it serves as a base material for leveling and repairing wall surfaces, providing a solid foundation for subsequent finishing work. Applying putty powder to walls ensures excellent smoothness and uniformity, thereby facilitating smoother execution of subsequent decorative projects. Putty powder typically consists of a binder, fillers, water, and additives. Among the key additives, redispersible latex powder plays several important roles in putty powder:
① The effect on fresh mortar;
A. Improve workability;
B. Additional water retention to enhance hydration;
C. Enhance workability;
D. Avoid early cracking.
② Effect on hardened mortar:
A. Reduce the elastic modulus of the mortar to enhance its compatibility with the substrate;
B. Enhances flexibility and crack resistance;
C. Enhance resistance to powder shedding;
D. Water repellency or reduced water absorption;
E. Enhance adhesion to the substrate.
Waterproof mortar refers to cement-based mortar that, through optimized mix design and specific construction techniques, develops excellent waterproofing and impermeability after hardening. Such mortar exhibits superior weather resistance, durability, impermeability, compactness, exceptionally high bond strength, and outstanding water-resistant and anti-corrosion performance. As a key admixture, what are the primary functions of redispersible latex powder in waterproof mortar?
① Effects on fresh mortar:
A. Improve constructability
B. Enhances water retention and improves cement hydration;
② Effect on hardened mortar:
A. Reduce the elastic modulus of the mortar to enhance its compatibility with the substrate;
B. Enhance flexibility, improve crack resistance, or provide bridging capability;
C. Enhance the compactness of the mortar;
D. Hydrophobicity;
E. Enhance adhesion.
