ANALYTICAL MODELING FOR TENSILE PROPERTIES OF STEEL FIBER REINFORCED CONCRETE

Abstract

This paper proposes an analytical model relative to the tensile properties of steel fiber reinforced concrete (SFRC). Unlike ordinary concrete, the tensile stress-tensile strain curve of SFRC exhibits, after cracking, a second peak strength. This second peak strength tends to be proportional to the product of the steel fiber aspect ratio, volume ratio, orientation factor, and the 2/3 power of the concrete cylinder compressive strength. Furthermore, the cross-sectional analysis of SFRC flexural members using the proposed model for the tensile properties of SFRC confirmed that the behavior up to the flexural yield moment was evaluated with a high accuracy.