the enhancement effect of analytical microsilica-pg电玩城

microsilica, as one of the active mineral admixture used in concrete, can improve the composition of cementite cementitious materials, especially reduce and eliminate free lime. as the sio2 in the active mineral can react with the free lime and high-alkali hydrated calcium silicate to generate low alkaline hydrated calcium silicate with higher strength and better stability, the number of cementite material has been greatly increased, and the interface structure of cement stone and aggregate has also been greatly improved. as a result, concrete strength has been greatly improved. this is the enhancement effect of silicon powder on concrete.

how much does the strength of concrete increase with microsilica?

1. manufactured high-strength concrete (c70 or above) with microsilica, which significantly improved the strength and pumping performance of concrete;

2. manufactured highly impermeable (p30), self-waterproof concrete of structure, used in basements of subway, tunnel and high-rise buildings;

3. reasonable particle size distribution, strong density, high hardness, good abrasion resistance, can greatly improve the tensile, compressive, impact strength and abrasion resistance of solidified material, and the abrasion resistance can be improved by 0.5-2.5 times.

4. microsilica can increase the thermal conductivity, change the viscosity and increase the flame retardant performance.

5. it can reduce the exothermic peak temperature of the curing reaction of epoxy resin, reduce the linear expansion coefficient of the curing material and the shrinkage of the curing material, so as to eliminate internal stress and prevent cracking.

6. due to the fine particle size and reasonable distribution of micro silicon powder, it can effectively reduce and eliminate precipitation and stratification;

7. pure microsilica, low content of impurities and stable physical and chemical properties make the solidified material have good insulation performance and anti-arc performance.

8. manufactured marine and chemical concrete, which can effectively prevent infiltration and erosion of concrete by sulfate and chloride ions due to its high density performance, and avoid corrosion of concrete reinforcement, thus extending the service life of concrete;

improving the impermeability, chemical corrosion resistance and specific resistance of concrete improve the compactness of concrete and greatly reduce the gap of cement. foreign studies suggest that when the replacement rate of microsilica in concrete is 10-20%, the impermeability and chemical corrosion resistance of concrete are significantly improved, and the corrosion resistance of steel is also improved. at this time, the increased compactness and sio2 content effectively prevented the invasion and corrosion of acid ions. in addition, because of the high micro silicon powder than resistance (up to 1.2 x ω 1011 cm, 90 ~ 150 ℃), so the concrete resistivity can increase 1.9 ~ 16 times