摘要
针对提升新旧混凝土界面粘结的性能要求,分别从旧混凝土基面处理方法、新混凝土性能等方面开展了相关研究。结果表明,采用露骨剂处理基面、调节旧混凝土含水状态及降低新混凝土收缩率是提高新老混凝土粘结强度的有效方式。优化新旧混凝土界面空隙,降低缺陷、提高物理粘结力,是提高结合体粘结强度的根本原因。
In order to improve the performance of the interface bonding between old and new concrete,the paper carried out relevant research from the aspects of the old concrete foundation surface treatment method and the new concrete performance.The results show that it is an effective way to improve the bonding strength of new and old concrete to treat the base surface,adjust the moisture content of the old concrete and reduce the shrinkage of the new concrete.Optimization of interfacial voids between old and new concrete,reduction of defects and improvement of physical bonding force are the fundamental reasons for improvement of bond strength of the composite.
作者
沙建芳
徐海源
刘建忠
郭飞
张亚梅
SHA Jianfang;XU Haiyuan;LIU Jianzhong;GUO Fei;ZHANG Yamei(Jiangsu Sobute New Materials Co.Ltd.,Nanjing 210008,China;School of Materials Science and Engineering,Southeast University,Nanjing 210008,China)
出处
《新型建筑材料》
北大核心
2019年第10期133-135,151,共4页
New Building Materials
基金
国家重点研发计划项目（2016YFC0701907）
南京长江大桥维修改造工程课题资助项目（201727002）
关键词
修补材料
修补加固
界面粘结
粘结强度
repair material
repair reinforcement
interface bond
bond strength
