Reinforced concrete members with high-performance steel shear reinforcement

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The higher available strength of ASTM A1035 steel compared to traditional deformed rebar offers the potential for significantly reduced reinforcement congestion in concrete members. Moreover, differences in the metallurgy of this material provide improved ductility and reduced corrosion susceptibility compared to other high strength materials. These favourable conditions make ASTM A1035 steel a viable option for construction of bridge girders and other precast members where strength, ductility and durability are all primary design considerations. Due to differences in the mechanical properties of ASTM A1035 reinforcement compared to traditional reinforcement (i.e. higher specified strength, lack of yield plateau, improved bond characteristics), validation and enhancement of design methodologies must be completed and current limits on the maximum useable stress in the reinforcement must be established.