Semi-encrypted silica fume for museums concrete

micro silicon powder can react with cement to produce a strong layered silicate gel material, this gel can fill the voids in the concrete, improve the compactness and mechanical properties of the concrete. In addition, Silica Fume can also regulate the concentration of hydroxide ions in concrete so that its concentration is not too high, thus avoiding the adverse effect of hydroxide ions on concrete strength. Therefore, adding appropriate amount of silica fume in high strength grade concrete can improve the strength and stability of concrete.Silica fume reduces carbonation and corrosion of concrete, thus improving its durability. Silica fume helps to reduce the problem of corrosion of steel reinforcement in concrete as it fills the voids in the concrete, forms a dense cementitious material, and reduces the permeability of gas ions in the concrete. At the same time, the tiny pores in the silica fume are able to absorb localised carbonates and oxygen, blocking air and water infiltration and thus reducing the rate of concrete carbonation.