Comparative analysis of multilinear constitutive models of steel fiber reinforced concrete

Abstract The challenging task of structural design under safety, economic efficiency and environmental sustainability constraints has led to the development several efficient materials. In this context, steel fiber reinforced concrete (SFRC) stands out due post-cracking behavior related its enhanced toughness. Recent normative codes consider composite, suggesting good performance broadening applicability. Nevertheless, literature still lacks a comprehensive constitutive model precisely describe tensile behavior. This paper analyzes compares three main European models, investigating factors that possibly influence their study was conducted based on cross-sectional analysis method, so load-CMOD graphs could be obtained. Statistical classify regarding relevant parameters, such as mean compressive strength matrix volume. Results show law proposed by fib Model Code shows best performance. Also, from set considered ultimate fibers presents greatest sensitivity concerning post-crack