薄抹灰轻质聚合物抗裂砂浆耐候性试验研究  

Research on lightweight polymer mortar under weather test

作　　者：苏志杰[1] 路永华[1,2] 关淑君[3] 马捷[3] 宋跃军[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124 [3]中国建筑科学研究院,北京100013

出　　处：《混凝土》2014年第3期124-126,143,共4页Concrete

基　　金：住建部项目

摘　　要：按照《膨胀聚苯板薄抹灰外墙外保温系统》标准,对外墙外保温用轻质专用抹面砂浆I、轻质专用抹面砂浆II及常用聚合物抹面砂浆进行标准养护、耐候性试验(热雨循环80次、热冷循5次)后的力学性能对比,同时,对3种砂浆利用SEM进行了微观机理研究。结果表明:3种砂浆经历一定次数的热雨循环和热冷循环后,其抗压、抗折强度有不同程度的降低,压折比有不同程度的增大;微观研究与宏观上3种砂浆的抗压、抗折强度表现相一致。轻质专用抹面砂浆I和轻质专用抹面砂浆II抗裂性优于常用聚合物砂浆。According to ＂external thermal insulation composite systems based on expanded polystyrene＂, It was studied on the mechanical properties of polymer plaster mortars which are lightweight polymer mortar I, lightweight polymer mortar II and commonly used polymer mortar for external thermal insulation composite systems （ETICS） under weathering test and Standard curing.At the same time, it was studied on the microstructure using SEM about these three mortars.The results demonstrated that the compressive strength and the flexural strength of these three polymer plaster mortars for ETICS all declined to different extent,the flexural and compressive strength ratio of polymer plaster mortars increased.The study of Microstructure is consistent with the compressive strength and the flexural strength. Lightweight polymer mortar I and lightweight polymer mortar II are better than commonly used polymer mortar.

关 键 词：外墙外保温 抹面砂浆 耐候性试验 微观研究 

分 类 号：TU528.041[建筑科学—建筑技术科学]