Silica fume for secondary roads commercial concrete

Silica Fume for secondary roads commercial concrete (heavy encrypted silica fume:90% 92% 95%) this silica fume is widely added to commercial concrete used in the construction of various secondary roads.Improvement of concrete segregation and water secretion performance After pouring concrete, water is often separated from the concrete phenomenon, that is, the formation of a water film in the surface layer, also known as slurry, so that the upper layer of concrete distribution is not uniform, affecting the quality of construction. The more Microsilica is mixed in, the more difficult it is for the concrete material to segregate and secrete water. When the substitution rate of 15%, even if the concrete slump 15 ~ 20cm, almost no segregation and water secretion; when the substitution rate of 20% ~ 30%, the concrete directly into the tap water should not produce segregation. Because of the silica fume on the concrete segregation and water secretion properties of the improvement, so that mixed with silica fume concrete can be used as a harbour, tunnels and other underwater projects.