Basic requirements for high performance micro-silica concrete

1, high-performance micro-silica concrete has high fluidity, good cohesion, no segregation, no stratification, and excellent construction performance.

2. The hardened concrete has high strength. Since strength is the basic performance of concrete, ordinary concrete with low strength cannot be considered as high performance concrete. But this does not mean that ordinary concrete should have good construction performance and sufficient durability can be ignored.

3. The hardened wonton has good volume stability, namely shrinkage and low creep.

4, high durability. Can not because of a good performance, will meet some functional requirements of the project on the concrete called high performance concrete, otherwise, high performance concrete covers too wide, it will lose the meaning of high performance concrete.

5, high strength requires low water-cement ratio, small water consumption; On the contrary, large mobility requires too much water and a high water-cement ratio. In the mix ratio design of ordinary concrete, the main work is to balance these two requirements in order to meet the requirements of strength and fluidity.

Therefore, it is necessary to make high performance concrete that meets the above requirements. It is also necessary to adopt additional advanced technical measures, and incorporate high efficiency water reducing agents and high efficiency active mineral admixtures.