轻质聚合物抹面砂浆冻融循环及微观机理研究  

Freeze-thaw cycle test and microstructural analysis on lightweight polymer mortar

作　　者：苏志杰[1] 路永华[1,2] 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

出　　处：《混凝土》2014年第1期114-116,131,共4页Concrete

基　　金：住建部项目

摘　　要：针对外墙外保温体系用聚合物抹面砂浆在经受冻融循环试验条件下的应变和力学性能进行研究,结果表明:聚合物抹面砂浆经历一定次数的冻融循环后,轻质系列聚合物抹面砂浆总微应变量和压折比增加量均小于常用聚合物抹面砂浆,具有更好的柔韧性,提高了砂浆的耐久性。同时,利用SEM对三种砂浆进行了微观机理研究。It was studied on the mechanical properties and strain of polymer plaster mortars for extemal thermal insulation composite systems （ETICS） under freeze-thaw cycle test.The results demonstrated that after freeze-thaw cycle test, the total micro-strain and incre- ment of the flexural and compressive strength ratio of lightweight polymer mortar were less than commonly used polymer mortar.As a re- suit, the lightweight polymer mortar have better flexibility and durability.At the same time, it was studied on the microstructure using SEM about these three mortars.

关 键 词：外墙外保温 抹面砂浆 冻融试验 微观研究 

分 类 号：TU528.041[建筑科学—建筑技术科学]