Steel fiber high-strength reinforced concrete: a new solution for earthquake strengthening of old R/C structures

Abstract

In this study a new innovative method of earthquake-resistant strengthening of reinforced concrete structures is presented for the first time. Strengthening according to this new method consists of the construction of steel fiber highstrength concrete jackets without conventional reinforcement, which is usually, applied in the construction of conventional reinforced concrete jackets (i.e. longitudinal reinforcement, stirrups, hoops). The proposed in this study new innovative steel fiber high-strength or ultra high-strength concrete jackets were proved to be much more effective than the reinforced concrete jackets and the FRP-jackets when used for the earthquake-resistant strengthening of reinforced concrete structural members.