Waterproof mortar crack resistance

While ensuring the density of waterproof mortar, its crack resistance cannot be ignored. This will ensure better and longer-lasting waterproofing, as cracks make it easier for water to seep through.

How can this be improved?

1.Latex powder

Add an appropriate amount of high-quality latex powder to improve the flexibility and deformation resistance of the mortar.

2.Polypropylene fiber

Add about 3 mm of polypropylene fiber to improve the crack resistance of the mortar through physical crack resistance.

3.Inorganic cementitious materials

Reasonably combine inorganic cementitious materials and their additives. If there are special requirements (such as waterproof mortar for the backwater side), it is recommended to use a ternary system (sulfur aluminum cement + ordinary cement + hard gypsum).

4.Ultra-matched sand

Continuous ultra-matched sand (reasonably blended with 40-80 mesh and 80-120 mesh sand) not only improves the mortar’s density but also enhances its crack resistance.