Today Shenyang gas filling block The manufacturer will introduce to you what is fly ash aerated brick.
1. Volume weight fly ash roof thermal insulation aerated concrete is a kind of building product with porous structure. Light volume weight is one of its main characteristics, and the weight can be controlled by air entraining agent. The absolute dry unit weight of the fly ash roof insulation aerated concrete is about 500~800 kg/m3, which is about 3/5 lighter than the clay brick (1600~1800 kg/m3).
2. The pressure that the compressive strength material can withstand per unit area is called compressive strength. The compressive strength of the fly ash roof insulation aerated concrete depends on its unit weight, the nature of the raw materials (cement, fly ash and air entraining agent, etc.) used, hardening method and use needs.
3. Thermal conductivity The thermal conductivity is an indicator of the thermal conductivity of a material, that is, when the heat flow is perpendicular to the homogeneous material layer, if the temperature difference between the layers is 1 ℃, and the heat flow has been stable, then the thermal conductivity of this material layer with a thickness of 1 meter and a surface of 1 square meter in one hour is called the high calorie of heat. Therefore, the unit of thermal conductivity is kcal/m · h · degree. Its value depends on the structure, bulk density, humidity, pressure and temperature of the material. The smaller the thermal conductivity, the higher the thermal insulation efficiency. The thermal conductivity of fly ash roof thermal insulation aerated concrete is low. When the dry unit weight is below 800 kg/m3, the thermal conductivity is 0.0936~0.12 kcal/m · h · degree. It is about 1/5 of the clay brick (0.5~0.6 kcal/m · h · degree), and it is also lower than the autoclaved aerated concrete of the same grade. The main reason is that the fly ash roof insulation aerated concrete contains a large number of pores, and the pore diameter is small, so it is more than Autoclaved aerated concrete blocks It has better thermal insulation performance.
