温度对发泡水泥抗压能力和延性的影响

Effects of Temperature on Compressive Property and Ductility of Foamed Cement

为了解决建筑外墙保温材料对防火等级要求高以及节能环保的现实工程问题,采用普通硅酸盐水泥为胶凝材料,以双氧水为发泡剂,配以聚丙烯纤维制备了符合建筑防火要求的新型建筑保温材料——发泡水泥。研究分析了不同温度下发泡水泥的抗压强度以及延性。研究表明:37℃环境发泡水泥内部气泡小而密;42℃环境发泡水泥气泡大,气泡间距小。发泡水泥制备的温度环境对发泡水泥的密度,抗压能力以及延性影响较大,37℃环境发泡水泥抗压能力以及延性优于42℃环境发泡水泥。

As the new building insulation materials, foamed cement has prepared by P. O, hydrogen peroxide, polypropylene fiber and so on in order to solve practical engineering problems of building exterior wall thermal insu- lation materials whit high fire rating requirements and energy-saving environmental protection. Compressive property and ductility of foamed cement under different temperature were researched. The results showed： The bubble is small and dense in and it is big, bubble spacing is small in foamed cement under 42 ℃. Temperature environment of foamed cement preparing has a significant impact on density, compressive property and ductility of foamed ce- ment. The compressive property and ductility of foamed cement under 37 ℃ are superior to same properties of foamed cement under 42℃.