application range of microsilica concrete-pg电玩城

microsilica can improve the permeability and salt corrosion resistance of concrete and protect the steel bar. in underwater engineering, chlorine ions infiltrate into concrete, causing rapid corrosion of steel bar, concrete delamination, short life and serious damage. the method of catheter is generally used for underwater concrete pouring. as the cement slurry is lost, it cannot bond well with the base and reduces the strength of the contact part with water. these problems can be obviously improved by adding microsilica into underwater concrete.

application range of microsilica concrete:

high grade concrete (c70 or above) is manufactured to improve the strength and pumping performance of concrete significantly.

made of high anti-seepage (p30), self-waterproof concrete with structure, for the basement of subway, tunnel and high-rise building;

the high density properties of marine and chemical concrete can effectively prevent the infiltration and erosion of concrete by sulfate and chloride ions and prevent the corrosion of concrete reinforcement, so as to extend the service life of concrete.

in water conservancy and bridge engineering projects, concrete not only needs the above basic indicators, but also has very harsh requirements for its abrasion resistance and scour resistance.

rapid construction of concrete needs early strength, high strength concrete;

high-strength shotcrete used for support in the construction of tunnel, subway and large foundation pit structures;

concrete used in underwater construction projects (such as bridge piers, dams, drilling platforms, etc.);

pavement concrete of expressway and large bridge.

the microsilica is mainly used in combination with concrete, which is to determine the method of adding microsilica according to the design requirements of the drawing, namely the optimal amount of microsilica and the proportion of sand and stone. other additives are added in accordance with common concrete design methods. perhaps some people said, pure cement is not also good, the ground that pure cement laid is very high compressive strength also, why must join microsilica? because of the surface of the concrete with the microsilica, it is much more resistant to pressure than the surface of pure cement