BOND OF PRESTRESSING STRANDS ULTRA-HIGH-PERFORMANCE CONCRETE
Ultra-high-performance concrete (UHPC) is a kind of relatively new and advanced materials with high compressive and tensile strengths.Also, the bond strength between strands and UHPC is better than that in traditional concrete.This fact needs to be quantified, as there is no standard specification for UHPC adhesion performance and general UHPC design.The bond behavior of prestressing strands in UHPC is investigated in this study by 36 conducting direct tension pull-out tests.The effect of embedment length and concrete cover on bond strength were investigated in those tests.The tensile force in strands and slip of the end of reinforcement were measured, and then the average bond stress was examined.It was found that the bond behavior of deformed reinforcing steel in UHPC is different from that in traditional concrete in many aspects.In general, the development length and anchorage length of strands in UHPC can be significantly reduced.Guidance on the embedment of strands into UHPC is provided.
Ultra-high-performance concrete Prestressed strand Bond strength Development length Anchorage length
Xuejiao Liang Hui Zheng Shuaifei Xuan Biao Yang
School of Civil Engineering, Hunan University of Technology, China
国际会议
福州
英文
377-385
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）