毕业论文---防火外墙外保温墙体材料试验研究.doc

摘要 外墙外保温系统是保温隔热体系置于外墙外侧的保温系统，其在技术、 经济、 环境等各方面的优点较突出，适用范围广泛。玻化微珠保温砂浆具有优良的保温隔热性能和抗老化、耐候及防火性能，强度高粘结性能好，无空鼓、开裂现象，现场施工加水搅拌即可使用。 本文对无机、有机防火材料进行系统分析，通过比试验设计，对防火指数、导热系数、强度等各项技术指标进行了研究，选取玻化微珠保温浆料。 实验结果表明，随着玻化微珠的掺量增加，保温浆料的导热系数降低，抗压强度增加，干密度增加；随着水泥掺量增加，保温浆料的导热系数变化较小，抗压强度增加，干密度先降低后增加；随着乳胶粉掺量增加，保温浆料的导热系数先降低后增加，抗压强度先增加后降低，干密度减小；随着发泡剂掺量增加，保温浆料的导热系数、抗压强度和干密度均减小。燃烧性能符合国家A级标准。 玻化微珠保温浆料的最佳配比：玻化微珠160 kg/m3，水泥150 kg/m3，乳胶粉5 kg/m3，发泡剂1.5kg/m3，水料比1.1。 关键词 外墙外保温 玻化微珠 导热系数 抗压强度 干密度 燃烧性能Abstract Exterior insulation system is thermal insulation system on the outside of the exterior wall insulation system, and it is more prominent in technical, economic, environmental and so on. 朗读 显示对应的拉丁字符的拼音 ? 字典 Glass beads which is excellent thermal insulation properties, weathering and fire resistance, high strength adhesive properties, without hollowing and cracking phenomenon can be used with the scene of mixing water.朗读 显示对应的拉丁字符的拼音 ? 字典 名词 respect aspect side field By the contrast experiment, we measured fire index, thermal conductivity, strength and other technical indicators, and analyzed inorganic and organic materials, and selected the insulation slurry of glass beads . This paper Optimize material combination by orthogonal experiment .The experiment show that the thermal conductivity of thermal insulation mortar will reduce, compressive strength will increases and the density will increase when the content glass bead increases; The thermal conductivity of thermal insulation mortar will change a little and the conpressive strength will increase, but the dry density will decrease firstly and then increase when the cement content increases; The thermal conductivity of thermal insulation mortar will firstly decrease and then increase, the compressive strength will firstly increase and then decrease, the density will decrease when the content polymer powder increases; The thermal conducvity of thermal insulation morder ,the compressive strength and the dry density will all decrease when the content