Silica fume for class II roads commercial concrete

Silica fume for class II roads commercial concrete (silica fume for high-strength concrete:90% 92% 95%) it can be added as an additive to commercial concrete used in the construction of secondary roads in various locations.The effect of microsilica on the frost resistance of concrete. Regarding the effect of silica fume on the frost resistance of concrete, a large number of studies at home and abroad have shown that in the case of equal substitution, the mixing amount of less than 15% of the silica fume concrete, its frost resistance is basically the same, and sometimes it will be improved (such as the mixing amount of 5% to 10%), but the mixing amount of more than 20% will obviously reduce the frost resistance of silica fume concrete. Silica fume and alkali-aggregate reaction Domestic and international practice shows that silica fume is beneficial to inhibit alkali-aggregate reaction in concrete. When calculating the total alkali content of concrete, the effective alkali brought in by silica fume is calculated as 50% of its total alkali content.