摘要
文中采用四种不同的界面强度测试方法,选用两种工程常用的界面处理方式,开展超高性能混凝土-普通混凝土(UHPC-NC)界面拉剪性能试验研究。结果表明,UHPC-NC界面拉剪黏结强度均能满足相关规范要求,界面破坏均呈现NC端基体混凝土的内聚破坏模式,UHPC-NC界面表现出良好的黏结性能;推荐直拉试验作为UHPC-NC界面抗拉强度的强度判定测试方法,劈拉试验作为UHPC-NC界面抗拉强度横向对比测试方法,斜剪试验作为UHPC-NC界面剪切性能测试方法。
Four different interface strength test methods were used,and two commonly used interface treatment methods in engineering were selected to carry out the UHPC-NC interface tensile and shear performance test research.The results showed that the UHPC-NC interface tensile and shear bonding strength could meet the relevant specifications,and the interface failure presented the cohesive failure mode of NC part concrete.The UHPC-NC interface showed good bonding performance.It was recommended that the direct pull test be used as the strength determination test method for UHPC-NC interface tensile strength,the splitting pull test be used as the transverse comparison method for UHPC-NC interface tensile strength,and the slant shear test be used as the UHPC-NC interface shear performance test method.
作者
杜任远
张悦聪
杨秋良
徐伟
魏琦
陈忠发
鲁亚
Du Renyuan;Zhang Yuechong;Yang Qiuliang;Xu Wei;Wei Qi;Chen Zhongfa;Lu Ya(Jiangxi Building Materials Research and Design Institute Co.Ltd.,Nanchang,Jiangxi 330001;Jiangxi Ultra-High Performance Concrete Engineering Research Center,Nanchang,Jiangxi 330001;College of Civil Engineering,Fuzhou University,Fuzhou,Fujian 350108)
出处
《江西建材》
2023年第8期44-46,共3页
Jiangxi Building Materials
基金
江西省重点研发计划项目《UHPC加固RC构件界面黏结性能、整体受力性能研究与工程应用》(项目编号:20212BBG73003)
江西省重点研发计划项目《基于UHPC连接的新型装配式建筑结构关键技术研究》(项目编号:20212BBG71010)
