Interlaminar Bonding Performance of UHPC/SMA Based on Diagonal Shear Test  

作　　者：丁庆军 LEI Yuxiang 张高展 CHENG Huaqiang ZHAO Mingyu GUO Kaizheng DING Qingjun;LEI Yuxiang;ZHANG Gaozhan;CHENG Huaqiang;ZHAO Mingyu;GUO Kaizheng(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Advanced Building Materials Key Laboratory of Anhui Province,School of Material Science and Chemical Engineering,Anhui Jianzhu University,Hefei 230601,China;Wuhan Municipal Construction Group Co.,Ltd,Wuhan 430023,China;School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110000,China)

机构地区：[1]School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China [2]Advanced Building Materials Key Laboratory of Anhui Province,School of Material Science and Chemical Engineering,Anhui Jianzhu University,Hefei 230601,China [3]Wuhan Municipal Construction Group Co.,Ltd,Wuhan 430023,China [4]School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110000,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2023年第1期97-108,共12页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Foundation of China(Nos.U21A20149 and 51878003)。

摘　　要：To evaluate various interlaminar bonding reinforcement techniques used for steel bridge decks,the UHPC surface was roughened with shot blasting(SB),transverse grooving(TG)and surface embedded stone(S),epoxy resin(E),epoxy asphalt(EA)and high viscosity high elasticity asphalt(HV)as interlayer bonding materials.In addition,a diagonal shear test was conducted using a self-designed diagonal shear jig.The effects of adhesive layer materials type,surface texture type,and different loading rates on the interlaminar bonding performance of UHPC/SMA combination specimens were investigated.The experimental study showed that the peak shear strength and shear modulus of the combined specimen decreased gradually with the decrease of thermosetting of the adhesive layer materials.The peak shear fracture energy of E was greater than that of HV and EA.The synergistic effect of the contact force generated by the roughing of the UHPC surface,the friction force,and the bonding force provided by the adhesive layer material can significantly improve the interlaminar shear performance of the assemblies.The power-law function of shear strength and shear modulus was proposed.The power-law model of peak shear strength and loading rate was verified.The shear strength and predicted shear strength satisfy the positive proportional functions with scale factors of 0.985,1.015,0.961,and 1.028,respectively.

关 键 词：UHPC SMA bonding materials surface textures loading rate bonding performance 

分 类 号：TU528[建筑科学—建筑技术科学]