不同裂缝尺度下无机轻骨料砂浆外墙外保温系统温度场分析  

Analysis on Temperature Field of External Thermal Insulation Composite Systems of Inorganic Lightweight Aggregate Mortar with Different Crack Scales

作　　者：田静静[1] 袁克龙 熊厚仁[2] 郑豪[2] TIAN Jing-jing;YUAN Ke-long;XIONG Hou-ren;ZHENG Hao(Nanhu College,Jiaxing University,Jiaxing 314001,China;Jiaxing Key Laboratory of Building Energy Efficiency Technology,Jiaxing University,Jiaxing 314001,China)

机构地区：[1]嘉兴学院南湖学院,浙江嘉兴314001 [2]嘉兴学院建筑节能技术实验室,浙江嘉兴314001

出　　处：《混凝土与水泥制品》2021年第4期69-73,共5页China Concrete and Cement Products

基　　金：浙江省基础公益研究计划项目(LGF18E080010);浙江省重点研发计划项目(2020C01147);教育部高等教育司产学合作协同育人项目(201802294017)。

摘　　要：研究了不同裂缝尺度下无机轻骨料砂浆外墙外保温系统的温度场变化情况,对含预制裂缝宽度为0.05 mm、0.10 mm、0.20 mm、0.30 mm、0.40 mm和0.50 mm的试件进行了160次热雨循环试验,测量了不同裂缝尺度下试件的温度值,分析了各阶段的温度场变化规律。结果表明:与无裂缝情况下相比,试件预制裂缝对基墙温度的变化有一定影响;系统的热物理性能随热雨循环次数的增加而逐渐劣化,裂缝宽度对保温层温度的变化影响很小,仅会对基墙的温度造成一定影响;当裂缝较宽时,基墙将在升温阶段达到较高的温度。The temperature change in the external thermal insulation composite systems of inorganic lightweight aggregate mortar(ETICS-ILAM)containing different crack scales was studied.160 times of hot rain cycles were carried out on ETICS-ILAM specimens with prefabricated crack widths of 0.05 mm,0.10 mm,0.20 mm,0.30 mm,0.40 mm and 0.50 mm.The temperature values of the specimens with different crack sizes were measured,and the variation law of the temperature field in each stage was analyzed.The results show that the prefabricated cracks in the specimens have a certain influence on the temperature change in the base-wall.The thermal physical properties of the system gradually deteriorate with the increase of the number of heat-rain cycles.The crack width has little influence on the temperature change in the insulation layer,but has noticeable influence on the temperature in the base-wall.When the crack has a relatively bigger width,the temperature in the base-wall can reach a relatively higher value during the temperature increasing stage.

关 键 词：裂缝 外墙外保温系统 无机轻骨料砂浆 温度场 热雨循环 热物理性能 

分 类 号：TU528[建筑科学—建筑技术科学]