2 Select the appropriate minimum amount of cement
In order to ensure the quantity and quality of sediment slurry in waterproof concrete, there must be sufficient amount of cement. Under the condition of economic factors and norms, the minimum cement dosage per square meter of waterproof concrete is 320kg.
3. Select the appropriate sand rate
Choosing suitable sand rate can improve the impermeability of waterproof concrete. Generally speaking, in the actual construction site, it is required that the sand rate of concrete waterproof concrete should not be less than 35%, nor higher than 40%. The sand rate in this range can greatly improve the impermeability of concrete waterproof concrete.
4. Select the appropriate cement-sand ratio
Too large or too small lime sand ratio is also not conducive to the improvement of waterproof concrete impermeability, to ensure that it is between 0.4 and 0.5, to ensure that waterproof concrete has good impermeability.
5. Choose reasonable admixtures
The selection of admixture can not be ignored to improve the impermeability of waterproof concrete. Generally, air entraining agent and water reducing agent can be selected as the admixture of concrete waterproof concrete, which can improve the waterproof and impermeable performance of concrete waterproof concrete.
6 Choose good quality cement
Choose the quality of the standard, not expired cement to ensure that concrete waterproof concrete waterproof. Firmly can not choose wet cement, if cement caked, will seriously affect the impermeability of concrete waterproof concrete.
