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Microsilica Microsilica 930 D Microsilica 930 U Microsilica 950 D Microsilica 950 U White Microsilica Microsilica 970 U Microsilica Concrete Microsilica Refractory Require COA and MSDS |
Microsilica ConcreteMicrosilica is used in concrete. When it is used in concrete, it acts as a filler and as a cementitious material. The small microsilica particles fill spaces between cement particles and between the cement past matrix and aggregate particles. Microsilica also combines with calcium hydroxide to form additional calcium hydrate through the pozzolanic reaction. Both of these actions result in a denser, stronger and less permeable material. Application :
Microsilica has been used as an addition to concrete up to 15 percent by weight of cement, although the normal proportion is 7 to 10 percent. With an addition of 15 percent, the potential exists for very strong, brittle concrete. It increases the water demand in a concrete mix; however, dosage rates of less than 5 percent will not typically require a water reducer. High replacement rates will require the use of a high range water reducer. Function of adding Silica Fume(microsilica) :• Increase durability • Reduces concrete permeability • Improves resistance to corrosion • Shotcrete - lower rebound |
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Judy: microsilica@msn.com ; Ken: silicafume@msn.com www.microsilica-china.com phone: 86 27 85731200 fax: 86 27 85561557 mobile: 86 135 451 66700 Microsilica-China , Newreach produce silica fume(micro silica) export to all over the world. |