Waterproof mortar refers to cement mortar that has good waterproof and impermeability properties after hardening by adjusting the mortar ratio and using specific construction techniques. Waterproof mortar has good weather resistance, durability, impermeability, compactness and extremely high adhesion as well as strong waterproof and anti-corrosion effects. The application of redispersible polymer powder as the main additive in waterproof mortar has significantly improved the overall performance of waterproof mortar, making it one of the indispensable materials in construction projects.
The application of redisoersible powder in waterproof mortar mainly reflects In the following aspects:
Waterproof and anti-seepage: The redispersible powder can fill the pores in the mortar, forming a dense waterproof layer in the mortar, preventing water penetration and improving the waterproof performance of the entire mortar layer.
Strong bonding strength: Redispersible polymer powder can enhance the bonding and adhesion between the mortar and the base layer, making the waterproof layer more solid and less likely to fall off.
Freeze-thaw resistance: redispersible polymer powder can help improve the freeze-thaw resistance of mortar, making it suitable for different climate conditions; redispersible polymer powder can significantly improve the tensile strength of mortar, making the mortar more durable. By increasing the internal cohesion and viscosity of the mortar, the overall strength of the mortar is improved.
Construction convenience: Redispersible polymer powder can usually be quickly dissolved in cold water and can improve the process performance of cement mortar, which helps to better control the construction process of mortar and improve construction efficiency.
Effects of redispersible polymer powder on fresh waterproof mortar:
A、Improve workability;
B、Additional water retention, improved cement hydration;
Effects on hardening waterproof mortar:
A、Reduce the elastic modulus of mortar and enhance its suitability matching with base layer;
B、 Increase flexibility and resist cracking;
C、 Improve mortar density;
D、 Hydrophobicity;
E、 Increase adhesion.
Post time: Jan-08-2025