Research Progress on Bonding Performance Between Rebars and Steel Fiber Reinforced Concrete
The good bonding performance between rebars and concrete is the basis for the normal operation of reinforced concrete members and has a significant impact on the structural performance.The incorporation of steel fibers into concrete significantly improves the crack-resistant and tensile properties of concrete,thereby effectively improving the bonding properties between rebars and concrete.The research status of bonding performance between rebars and steel fiber reinforced concrete(SFRC)was summarized,including three aspects:bonding mechanism,bonding strength,and bond-slip models.Firstly,the bonding mechanism between rebars and SFRC was elucidated through the bonding force composition,bonding failure modes and steel fiber reinforcement mechanism;secondly,the applicability of the test results of different central pull-out specimens and test devices to the design of the structure were summarized,and the bonding strength test methods and influencing factors were analyzed,in addition to the types of rebars,concrete strength,transverse reinforcement restraint and other factors,the addition of steel fibers had an important influence on the bonding performance;then,the bonding strength calculation model and bond-slip constitutive relations were summarized and analyzed,and the applicability,advantages and disadvantages of each model were compared and analyzed.Finally,some methods and measures to improve the bonding performance of reinforcement and concrete were suggested.
NETL
NSTL
万方数据
维普
