1. The general role of cement mortar is to level the structural layer;

2. The cement or mortar roof is also used to find the slope;

3. When sticking the floor tiles, it will play the role of sticking, and the floor tiles or tiles are firmly attached to the base layer;

4. When making the prefabricated construction, if the thickness of the construction is small, the cement mortar can prevent the steel bars of its protective layer from being rusted;

5. Incorporate a certain amount of waterproof powder into the cement mortar to make a waterproof mortar surface.