
Mechanism of silica fume to improve the microstructure of hardened cement paste
First, silica fume (microsilica) has strong volcanic ash activity. Although the water is not directly added to the silica fume and cannot water hydration reaction, but the wollastonite (micro silica) and cement also added to water, when the cement hydration reaction, silica fume (micro silica) and Ca(OH)2 (one of cement…