Study on Shear Bond Performance of UHPC-NC Interface
WANG Yan1,2,*, CHANG Tianfeng1, YANG Zifan1, LI Yilan1
1 School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China 2 State Key Laboratory of Green Building, Xi'an 710055, China
Abstract: Ultra-high performance concrete (UHPC) has significant advantages and great potential in the field of structural repair and reinforcement due to its excellent mechanical and durability properties.The bond performance of UHPC-normal concrete (NC) interface is very important for achieving a good reinforcement effect.Based on the oblique shear test,here analyzed the influence of UHPC strength and reinforcement thickness on the bond performance of UHPC-NC interface.The results show that the interface bond performance between post-cast UHPC and NC is excellent,and the failure modes of oblique shear specimens are mostly NC failure or simultaneous failure of interface and NC.The bond strength of UHPC-NC interface increases slightly with the increase of UHPC strength.The strength grade of UHPC increases from C100 to C140,and the interfacial bond strength of the specimen increases by 2.58 MPa (14.66%).The thickness of UHPC reinforcement has a more significant effect on the interfacial bond strength.The interfacial bond strength of the specimen with a thickness of 150 mm can be increased by 6.68 MPa (38%) compared with the specimen with a thickness of 75 mm.Based on the test results,a formula for calculating the shear strength of UHPC-NC interface considering the roughness of UHPC-NC interface,the strength of matrix NC,the strength and thickness of UHPC was established.The calculation results by the formula agree well with the test results.
王艳, 常天风, 杨子凡, 李伊岚. 超高性能混凝土-普通混凝土界面粘结性能研究[J]. 材料导报, 2025, 39(7): 24020129-6.
WANG Yan, CHANG Tianfeng, YANG Zifan, LI Yilan. Study on Shear Bond Performance of UHPC-NC Interface. Materials Reports, 2025, 39(7): 24020129-6.
1 Wang T, Tan L, Xie S, et al. Tunnelling and Underground Space Technology, 2018, 76, 92. 2 Tayeh B A, Bakar B H A, Johari M A M, et al. Journal of Adhesion Science and Technology, 2013, 27(16), 1790. 3 Wu C, Chu F W, Gong M Z, et al. Materials Reports, 2023, 37(24), 163 (in Chinese). 吴琛, 储福玮, 龚明子, 等. 材料导报, 2023, 37(24), 163. 4 Zhang Y, Wu J, Shao X D, et al. China Civil Engineering Journal, 2021, 54(7), 81 (in Chinese). 张阳, 吴洁, 邵旭东, 等. 土木工程学报, 2021, 54(7), 81. 5 Wu Y X, Zheng X Y, Huang W, et al. Materials Reports, 2023, 37(16), 144 (in Chinese). 吴应雄, 郑新颜, 黄伟, 等. 材料导报, 2023, 37(16), 144. 6 Oesterlee C. epfl, DOI:10.5075/epfl-thesis-4848. 7 Safdar M, Matsumoto T, Kakuma K. Composite Structures, 2016, 157, 448. 8 Shao X D, Qiu M H, Yan B F et al. Materials Reports, 2017, 31(23), 33 (in Chinese). 邵旭东, 邱明红, 晏班夫, 等. 材料导报, 2017, 31(23), 33. 9 Tayeh B A, Bakar B H A, Johari M A M, et al. Construction and Building Materials, 2012, 36, 538. 10 Munoz M A C, Harris D K, Ahlborn T M, et al. Journal of Materials in Civil Engineering, 2014, 26(8), 839. 11 Harris D K, Carbonell Muñoz M A, Gheitasi A, et al. Advances in Civil Engineering Materials, 2015, 4(2), 75. 12 Wu X G, Zhang X C. Journal of Building Structures. 2018, 39(10), 8 (in Chinese). 吴香国, 张孝臣. 建筑结构学报, 2018, 39(10), 8. 13 Ministry of Communications of the People's Republic of China. Technical specifications for strengthening of highway tunnel:JTG/T 5440-2018, China communication press, China, 2018 (in Chinese). 中华人民共和国交通部, 公路隧道加固技术规范:JTG/T 5440-2018, 人民交通出版社, 2018. 14 Lu K, Pang Z, Xu Q, et al. Cement and Concrete Composites, 2022, 133, 104691. 15 Ministry of Housing and Urban-Rural Development, People's Republic of China. Standard for test method of concrete physical and mechanical pro-perties, China Architecture & Building Press, China, 2019(in Chinese). 中华人民共和国住房与城乡建设部. 混凝土物理力学性能试验方法标准, 中国建筑工业出版社, 2019. 16 ASTM C882/C882M-13a, Standard test method for bond strength of epoxy-resin systems used with concrete by slant shear. West Conshohocken, ASTM International, 2013. 17 Concrete repair guide:ACI 546R-04, American Concrete Institute, USA, 2004. 18 American Association of State Highway and Transportation Officials. AASHO LRFD bridge design specifications. Washington. DC, 2020. 19 British Standards Institution. Eurocode 2:design of concrete structures:part 1:general rules and rules or buildings:BS EN 1992-1-1. British Standards Institutions, U. N. 2004. 20 Xu W Q. Calculation method of shear strength and bond slip constitutive model of the new-to-old concrete interface. Master's Thesis, Southwest Jiaotong University, China, 2021 (in Chinese). 徐文强. 新老混凝土结合面抗剪强度计算方法与粘结-滑移本构模型. 硕士学位论文, 西南交通大学, 2021. 21 Guo J J. Study on mechanical properties of new and old concrete bonding after high temperature. Ph. D. Thesis, Dalian University of Technology, China, 2003 (in Chinese). 郭进军. 高温后新老混凝土粘结的力学性能研究. 博士学位论文, 大连理工大学, 2003. 22 Zhang Y, Zhu P, Liao Z, et al. Construction and Building Materials, 2020, 235, 117431. 23 Long J, Chen Q, Jiang Z W. China Concrete and Cement Products. 2019(4), 5 (in Chinese). 龙杰, 陈庆, 蒋正武. 混凝土与水泥制品, 2019(4), 5. 24 Jiang X, Song H, Li K, et al. Advances in Materials Science and Engineering, 2023, 2023, 3169912. 25 Robalo K, do Carmo R, Costa H, et al. Construction and Building Materials, 2021, 304, 124603.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2025, Vol. 39 
