Effects of sand and mud content on compressive strength of C80 high strength concrete

Especially in silt content increased to 1.0%, the compressive strength reduce the most obvious change is, this is because the concrete preparation process, the aggregate surface adsorption have dirt will affect its direct contact with the hydration products, leads to the change both in concrete mixing sliding, and significantly lower bonding degree, the hardening of concrete and its effect on the strength of the material itself, Finally, the compressive strength decreased.