空心玻璃微珠掺量对塑料泡沫混凝土性能的影响

Effect of content of hollow glass beads on properties of plastic concrete

为了解决建筑制冷、保暖所产生的建筑能源损耗问题,设计了一种新型轻质高强自保温泡沫混凝土砌块。将聚苯乙烯泡沫(EPS)塑料颗粒、空心玻璃微珠(HGB)颗粒两种隔热轻质骨料和泡沫混凝土复合制成一种新型复合塑料泡沫混凝土。通过测试复合混凝土的干密度、抗压强度、孔隙率、吸水率、导热系数、燃烧质量损失率,来探讨空心玻璃微珠(HGB)掺量对复合泡沫混凝土性能的影响。研究结果表明,当HGB掺量为15%时,复合塑料混凝土的干密度为646 kg/m,抗压强度为1.55 MPa,导热系数为0.135 3 W/(m·K),体积吸水率为9.13%,满足A6等级塑料混凝土的技术要求。试验可为以后制作空心玻璃微珠-膨胀珍珠岩-聚苯乙烯颗粒三掺泡沫混凝土并对其相关性能的研究提供参考。

In order to solve the problem of building energy loss caused by building refrigeration and heat preservation, a new type of green light-weight and high-strength self-insulation foam concrete block was designed. A new type of composite foam concrete is made by compounding polystyrene(EPS) particles, hollow glass beads(HGB) particles and foam concrete, which increases the particle gradation of concrete and changes the pore structure, thus affecting the performance of foam concrete. By testing the dry density, compressive strength, porosity, water absorption, thermal conductivity, moisture content and combustion mass loss rate of composite concrete, the influence of the content of hollow glass beads(HGB) on the performance of composite foam concrete is discussed. The results show that when the content of HGB is 15%,the dry density is 646 kg/m~3,the compressive strength is 1.55 MPa, the thermal conductivity is 0.135 3 w/(m·K),the volumetric water absorption is 9.13%,and the softening coefficient is 77.8%,which meets the technical requirements of A6 plastic concrete grade.The test can provide a reference for making hollow glass bead, expansion perlite, polystyrene particle triple-mixed foam concrete and studying its related properties.