Multiaxial compressive strength of hybrid fiber reinforced concrete: A unified empirical model

In engineering design, the strength analysis of concrete structures heavily depends on compressive hybrid fiber reinforced (HFRC), which also has an impact stability and safety structure. The objective this study is to develop a unified empirical model that can quickly estimate under multiaxial compression. To measure concrete, 108 cylindrical specimens 225 cubic were designed for conventional true triaxial testing, respectively. Two typical stress paths, i.e., proportional loading constant restraint loading, employed simulate ratio- confinement pressure-dependent formulas proposed calculate correspondingly. Based validation against available test results, it been demonstrated effectively predict axial concrete. findings reveal constraint pressure considerably affects steel further improve these capabilities significantly.