粉煤灰漂珠外墙保温砂浆试验研究

本文介绍了漂珠外墙保温砂浆的研制及性能。通过试验研究,笔者以粉煤灰中的漂珠和膨胀珍珠岩为轻骨料,经表面憎水改性处理,水泥为胶结料,辅以聚合物增粘增稠、纤维增韧等,研制成功一种新型外墙保温砂浆。经测试,漂珠外墙保温砂浆的隔热保温性、强度、抗裂性、耐候性等均优于膨胀珍珠岩保温砂浆,而其体积稳定性、耐老化、耐候性、阻燃性、施工性等则优于聚苯颗粒(EPS)保温砂浆。

Experimental Study on Fly Ash Floating Bead Mortar for External Thermal Insulation

In this paper,the development and properties of floating bead insulation mortar were introduced.Based on the experimental study,a new kind of exterior wall external thermal insulating mortar had been successfully produced.For this material,fly ash floating bead and expanded pearlite which was modified by hydrophobe were taken as the lightweight aggregate,meanwhile,portland cement was used as the inorganic binder,also the fiber and polymer were taken as the additive.The results of experiments indicated that properties of fly ash floating bead insulating mortar,such as thermal insulation,strength,crack-resistant and climate-resistant,were superior to those of expanded pearlite insulating mortar.On the other hand,other properties,such as bulk stability,aging-resistant,climate-resistant,crack-resistant and fireproofing,construction workability were much better than those of expanded polystyrene sheet(EPS) insulating mortar.