玻化微珠和粉煤灰掺量对玻化微珠保温腻子性能的影响研究

Study on the Effect of Glass Beads and Fly Ash Dosage on the Performance of Glass Beads Insulation Putty

摘要: 近年来，随着建筑行业对节能环保要求的日益提高，外墙保温系统的研发和应用得到了广泛关注。目前，对外墙保温层保温砂浆的研究已经有很多，但对面层的保温腻子研究却极少。本研究以玻化微珠作为保温填料，粉煤灰与硅酸盐水泥作为胶凝材料，可分散性乳胶粉、聚丙烯纤维和纤维素醚作为外加剂，旨在开发了一种新型玻化微珠外墙保温腻子。研究通过单因素实验、SEM和FIRT分析，探讨了玻化微珠与粉煤灰掺量对玻化微珠保温腻子流动性、干密度、力学性能、耐水性能、保温性能的影响和作用机理。结果显示玻化微珠掺量45 wt%，粉煤灰替代水泥40 wt%时，乳胶粉3 wt%，纤维素醚0.5 wt%，聚丙烯纤维0.3 wt%保温腻子综合性能最优，此为玻化微珠与粉煤灰的协同最佳配方。

Abstract: In recent years, with the increasing demand for energy saving and environmental protection in the construction industry, the research and development and application of external wall insulation systems have received widespread attention. At present, there have been a lot of studies on the thermal insulation mortar for the external wall insulation layer, but there are very few studies on the thermal insulation putty for the opposite layer. This study aims to develop a new type of glass bead external wall insulation putty by using glass beads as insulation filler, fly ash and silicate cement as cementitious materials, dispersible latex powder, polypropylene fibre and cellulose ether as additives. The study investigated the effect and mechanism of glass beads and fly ash dosage on the fluidity, dry density, mechanical properties, water resistance, and thermal insulation properties of glass beads thermal insulation putty through one-way experiments, SEM and FIRT analyses. The results show that 45 wt% of glass beads, 40 wt% of fly ash replacement cement, 3 wt% of latex powder, 0.5 wt% of cellulose ether, 0.3 wt% of polypropylene fibre insulation putty with the best comprehensive performance, which is the optimal synergistic formulation of glass beads and fly ash.