Micro-silica component indices Popularization and application of micro-silica, marking China's construction industry and ceramic production into high-tech refractory period, 80 years, due to the application of micro-silica powder has also led to other applications, with the development of the market changes, The construction industry, ceramics and refractories demand increasing, micro silica fume of its special physical and chemical properties will be subject to City Market is more pro-gaze, very broad application prospects. In recent years, micro-silica fume in the construction and building materials industry applications, to achieve Very good results, its use more and more broad. After the infiltration of silica fume cement concrete can well fill in the gaps among the cement, so that more micro-density slurry, in addition, With the dissociated Ca (OH) combine to form a stable calcium silicate hydrate 2CaO.SiO2. H 2O, the hydrates, condensate Gel strength is higher than Ca (OH) crystals, mainly reflected in: (1) to increase its strength. Of the concrete compressive strength, flexural strength greatly increased, infiltration of 5-10% silica fume, Compressive strength can increase 10-30%, flexural strength increased by 10% or more; (2) increasing the density. Impermeability performance 5-18 times more resistant capabilities increased by 4 times: (3) Frost Resistance: micro silica fume concrete in 300-500 times through the cycle of fast-freeze solution, the relative elastic modulus Reduced 10-20%, while the ordinary concrete by 25-50 cycles, the relative elastic modulus reduced to 30-73% ; (4) The early strength of: micro silica fume concrete to shorten the induction period, with early strength of character; (5) Anti-abrasion, cavitation control of: micro silica fume concrete abrasion-resistant than ordinary concrete ability to increase 0.5-2.5 Times, anti-cavitation ability to increase 3-16 times.