2013年8月21日星期三

The strength of the concrete produced lower

① rubber powder is an elastic material,Rubber powder particles is far lower than the strength of the other components of the concrete strength of the material. In the role of external forces,The deformation of rubber powder particles and other materials in concrete deformation produced inconsistent, solid concrete Reduced inter-bearing area, around the particles of the rubber powder gradually cracks eventually destroy, and rubber Stabilized Soil Mixing Plant, the more easily damaged. ② special nature rubber powder materials, it is difficult to determine with Cement interface well together, so that inside the concrete to produce a large number of weak boundary Surface, and the weak interface with the increase of rubber powder dosage increase. Therefore, the thin rubber powder concrete Under the effect of weak interface reduced ability to resist external forces, so the compressive strength decreases. ③ Through analysis we Know, rubber powder concrete with air-entraining effect, can produce large amounts of concrete and stable bubbles inside, stationary concrete batching plant by reducing the sectional area of the concrete, but also resulted in a reduced strength of the concrete produced Low. Rubber powder content in the same circumstances, rubber powder 28d compressive strength of concrete with rubber exhibit Powder particle size decreases and the decrease. This is because the specific surface area of rubber powder rubber powder with particle size The decrease of, resulting in a weak interface to increase inside the concrete, the concrete compressive strength With the decrease of rubber powder particle size decreases.

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