Cement standard consistency water demand (hereinafter referred to as cement water demand), the exact characteristic parameters should be the standard consistency of concrete water consumption, is to make the cement vertical roller mill to achieve a certain degree of plasticity and mobility required mixing water, it is important indicators of cement performance.

Cement water demand directly affects the water-cement ratio of concrete, which affects the strength of concrete, corrosion resistance, frost resistance, durability, the amount of concrete produced by concrete and the amount of admixture, affecting the cost and benefit of the user.

Large amount of Cement standard consistency water demand, the more cement paste to achieve the standard consistency of water consumption, the more cement mortar to achieve the required flow of water, and cement concrete to achieve a certain amount of slump water consumption are also larger, so the greater the water-cement ratio of mortar and concrete, the more space between the particles, the smaller the density, the cement and its concrete construction performance, mechanical properties and durability deterioration will get worse.