Coarse and fine aggregate and cement concrete density

This is because The apparent density of the rubber powder is smaller than the thickness of the concrete aggregate and cement density, the rubber powder by a Fixed proportion of mixed concrete, unit volume decreases the amount of other materials, thus reducing the mixed Concrete mixing plants of concrete, and the scope of the rubber powder content is not so apparent density of concrete Impact is limited. Rubber powder content in the same circumstances, exhibit an apparent density of the concrete with Rubber powder particle size decreases and decreasing trend, and the lower range is not great. For example: When the rubber Powder content of 3%, the three kinds of rubber powder particle ash apparent density of concrete were: 2386,2300,2372 kg/m3. This is because the unit mass of the rubber powder, the smaller the size, the volume occupied by the more Large, relatively reduced incorporation of the concrete stationary concrete batching plant other materials, so the case of the same dosage, The apparent density of the concrete is reduced with decrease of particle size. And because the dosage is small, the apparent density Much lower degree range.