Waterproof cement mortar is made of cement, fine aggregate and water, as well as the need to join the lime, active admixture or admixture in the field of the mortar, divided into cement mortar and cement mortar.

Waterproof cement mortar generally speaking, 1: 3 cement mortar is 1 part of cement and 3 copies of sand with the actual neglect of the water composition, generally about 0.6 ratio, which should be 1: 3: 0.6, cement mortar density of 2000Kg / m3.