复合衬砌结构混凝土界面粘结性能试验研究  

Experimental Research on Bonding Performance of Concrete Interface of Composite Lining Structure

作　　者：蒋瑶 蔡升宇 何世钦 张武[3] 沈浩浩 高伦 JIANG Yao;CAI Sheng-yu;HE Shi-qin;ZHANG Wu;SHEN Hao-hao;GAO Lun(School of Civil Engineering.North China University of Technology,Beijing 100144 China;Guangzhou Municipal Group Co.,LTD.,Guangzhou 510060,China;Guangdong Hydropower Planning&Design Institute,Guangzhou 510635,China)

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]广州市市政集团,广东广州510060 [3]广东省水利电力勘测设计研究院,广东广州510635

出　　处：《水电能源科学》2021年第12期160-163,共4页Water Resources and Power

基　　金：北京市属高校基本科研业务费(110052971921/059);珠江三角洲水资源配置工程科研项目(WW2018225,WW2018231)。

摘　　要：复合衬砌结构存在明显的混凝土粘结面,其良好的抗拉和抗剪性能是保证隧道安全可靠的关键。采用佳固士界面剂与环氧乳液界面剂对新旧混凝土界面进行处理,设计了新旧混凝土粘结界面劈裂试验和推出剪切试验,制作了8组共24个试件对新旧混凝土结合面处的劈拉强度和抗剪强度进行测试。结果表明,两种界面剂对复合结构混凝土之间的粘结性均有一定提升,佳固士界面剂作为一种新型的水性无机渗透结晶型材料,对混凝土界面粘结性能的提高效果更好,可为复合衬砌结构的应用提供一定的工程指导。The composite lining structure has an obvious concrete bonding surface,and its good tensile and shear resistance are the key to ensure the safety and reliability of the tunnel.In this paper,Jiagushi interface agent and epoxy emulsion interface agent were used to treat the interface between the new and old concrete.The split test and the launch shear test of the bonding interface between the new and the old concrete were designed,and 8 sets of 24 specimens were made to the interface between the new and old concrete.The split tensile strength and shear strength at the place were tested,and the results show that the two interface agents have a certain improvement in the bonding performance between the composite structure concrete.The Jiagushi interface agent is a new type of water-based inorganic permeable crystalline and the material has a better effect on improving the bonding performance of the concrete interface,which can provide certain engineering guidance for the application of composite lining structures.

关 键 词：复合衬砌结构 界面粘结 劈拉强度 抗剪强度 

分 类 号：TV5[水利工程—水利水电工程]