Preparation and properties of waste-solid based foam concrete energy-saving materials

Jun Ji, Xiaosheng Liu, Shengying Tan, Wen Ni
2019 IOP Conference Series: Earth and Environment  
In this paper, foam concrete is prepared from industrial waste such as steel slag (SS), blast furnace slag (BFS), flue gas desulfurization (FGD). By studying the stability of foaming agent, the specific surface area of cementing material and curing temperature, the insulation performance of foamed concrete can be improved. The test results show that the HT composite foaming agent has good stability at a high temperature and can be used as a foaming agent for waste-solid based foam concrete.
more » ... foam concrete. Increasing the specific surface area of the material and increasing the curing temperature of the material can reduce the thermal conductivity of foam concrete. The thermal conductivity of the cementitious materials prepared by the A350 and A500 two-layer cementitious materials at 70 °C are: 0.083 W/(m•k) and 0.078 W/(m•k), respectively, which all have a good heat preservation effect. As the coefficient gap between the two is not large. In order to reduce the energy consumption caused by grinding, the A350 material can be used for exterior wall insulation.
doi:10.1088/1755-1315/295/4/042140 fatcat:5ydvyrohzzcaxcwlhvf67y7i4e