湿热环境对外保温用粘结砂浆影响规律研究  

THE INFLUENCE OF HOT AND HUMID ENVIRONMENT ON THE BONDING MORTAR FOR EXTERNAL THERMAL INSULATION

作　　者：李小祥 王政[1] 于清林 张玉涛 刘佳 国爱丽 张慧琳[3] LI Xiaoxiang;WANG Zheng;YU Qinglin;ZHANG Yutao;LIU Jia;GUO Aili;ZHANG Huilin(School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Beijing Building Materials Testing Academy Co.,Ltd.,Beijing 102402,China;Heilongjiang Province Academy of Cold Area Building Research,Harbin 150080,China)

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]北京建筑材料检验研究院有限公司,北京102402 [3]黑龙江省寒地建筑科学研究院,哈尔滨150080

出　　处：《低温建筑技术》2021年第2期39-42,共4页Low Temperature Architecture Technology

基　　金：金隅集团2020年重点科研项目“既有建筑外墙外保温系统安全诊断与修复关键技术研究”(MH20200261)。

摘　　要：文中研究分析了湿热环境对外保温用粘结砂浆的影响规律。采用层次分析法,从宏观和微观角度讨论了不同湿热条件对粘结砂浆力学性能及应用其制备的外保温系统的粘结性能。研究发现,粘结砂浆随湿热循环次数增加,力学性能呈先升后降的规律。结合微观分析可知,湿热条件对粘结砂浆具有促进水化和增加微结构缺陷的综合作用。The influence of hot and humid environment on the bonding mortar for external thermal insulation was investigated with the analytic hierarchy process.Furthermore,the bonding mortar’s mechanical properties and the external insulation system’s adhesive properties under different damp and heat conditions were discussed from the macro and micro perspectives.This study found that the bonding mortar’s mechanical properties increased firstly and then decreased with the increase of humid heat cycles.In addition,combined with the microscopic analysis,it can be known that the damp and heat conditions have a comprehensive effect on the bonding mortar in promoting hydration degree and microstructure defects generation.

关 键 词：湿热环境 粘结砂浆 力学性能 微观分析 

分 类 号：TU502[建筑科学—建筑技术科学]