Study on bond behavior between HRB500 steel bars and reactive powder concrete
ZHANG Ying
Abstract：The bond performance of HRB500 steel bars and RPC were studied by pull-out test,based on the experimental re-sults the RPC and high-strength steel bond slip curve is obtained. The influence of the diameter of steel bar,the thickness of the protective layer,the length of the reinforcement and the strength grade of the steel bar on the bond strength of RPC and steel bar are discussed respectively. The results show that the bigger the diameter of steel bar,the smaller the protective layer of concrete, the bigger the anchorage length of steel bar,the smaller the bond strength between steel bar and RPC. The bond strength between RPC and HRB500 is higher than that of HRB400 steel. Based on the test results,the formula for calculating the ultimate bond strength of RPC and HRB500 steel bars is established by regression analysis,and the critical anchorage length formula of RPC and HRB500 is given.
Keywords：RPCHRB500 steel barbond strengthcritical anchorage length
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 63-66 )