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Silica Fume Voids

2 Silica fume is ultra fine material 0,15 micron fill the gaps and voids increasing impermeability Silica fume is 100 to 150 times smaller than a cement particle it can fill the voids created by free water in the matrix. This function, called particle packing, refines the microstructure of concrete, creating a much denser pore structure.

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