混凝土与双相体不锈钢钢筋黏结性能试验研究

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中图分类号：TU375.1 文献标志码：A 文章编号：1005-8249（2025）06-0128-08

DOI：10.19860/j.cnki.issn1005-8249.2025.06.022

Abstract：Thisstudy investigatedthebond performancebetweenduplexstainlessteelrebarandtwotypesofconcrete，ordinary concreteandultrahigh performanceconcrete（UHPC），using 17setsof center pull-out tests.Keyparameters including concretestrength grade，rebardiameter，relativecoverthickness，andrelativeanchorage length．Theresultsshow thatordinary concrete specimens failed primarilybyrebar pulout，whereas UHPC specimens exhibited threefailuremodes：rebar pulut， concrete spliting，andrebar fracture.Enhancedbond performance wasobserved with higherconcrete strength grade，larger relativeconcretecover thickness，andlongerrelativeanchoragelength．Under identicalconditions，UHPCdemonstrated significantlysuperiorbondcapacitywithstainlessteelrebarcomparedtoordinaryconcrete，atributabletoisultrahghstrength andsteelfibers thatrestrictlateral expansion.Thus，UHPCexhibitsmarkedlybeterbondbehavior withduplexstainlessteel rebar than ordinary concrete.

Keywords：duplexstainless steereinforcement；ultra-highperformanceconcrete；ordinaryconcrete；bonding performance

作者简介：王静（2000一），女，硕士研究生，研究方向：高性能混凝土结构设计及理论。（剩余8510字）