Modeling of Mechanical Behavior of Steel Fibre-Reinforced Concrete in a Chemical Evolution Context

摘要

This paper presents an analytical model enabling the prediction of the tensile behavior of fibre-reinforced concrete (FRC) taking into account the effect of hydration. Using both experimental tensile tests at 2, 7 and 28 days after the concrete casting and behavior laws for plain concrete and for metallic fibres in concrete, the tensile response of a fibre-reinforced concrete can be predicted. The study of maturity of concretes gives us the possibility to predict the effect of hydration on mechanical strength and on bond between fibres and cementitious matrix.