摘要
装配式建筑是"十三五"期间建筑行业的重点发展方向。装配式建筑用密封胶作为装配式建筑外围护墙体的第一道防水屏障,其耐久性直接关系到装配式建筑的工程质量。本研究通过实验室人工加速老化和自然老化方法进行对比,考察了温度、紫外线和模拟人工气候老化条件对密封胶的影响,以拉伸模量、断裂伸长率和邵氏硬度为评价指标,同时采用老化速率法和变异系数法两种方法对不同密封胶的老化试验数据进行处理,并对其耐久性进行评价。
Prefabricated buildings are the key development direction of the construction industry during the 13 th Five-Year(2016-2021)in China.Sealant is the first outer waterproof barrier on the outermost side of prefabricated building,and therefore its durability is directly related to the engineering quality of prefabricated building.In this study,the effects of temperature,ultraviolet light and simulated artificial weathering conditions on the sealant were investigated by comparing the indoor artificial accelerated aging and natural aging methods.The tensile modulus,elongation at break and Shore hardness were used as evaluation indexes.At the same time,the aging rate method and the coefficient of variation method were used to process the aging test data of different sealants and evaluate their durability.
作者
刘盈
郑苗
LIU Ying;ZHENG Miao(China Academy of Building Research,Beijing 100013,China)
出处
《粘接》
CAS
2020年第1期1-6,共6页
Adhesion
基金
国家重点研发计划资助,项目名称:工业化建筑检测与评价关键技术,项目编号:2016YFC0701800
中国建筑科学研究院有限公司基础研究课题《装配式建筑用密封胶粘接质量和耐久性研究》课题编号:20160112330710031。
关键词
装配式建筑
耐久性
老化速率法
变异系数法
prefabricated buildings
durability
aging rate method
coefficient of variation method
