NEW ANALYTICAL MODEL FOR REPAIRED CRACKED CONCRETE BEAM WITH COMPOSITE PATCH UNDER THREE POINTS BENDING MOMENT

Abstract The problem of increasing the longevity of damaged concrete structures is of major importance for economic reasons. The aim of this study is to analyze the mechanical behavior of a cracked concrete beam repaired with a composite patch. A finite element model was built to computerize the integral J around the crack localized along the beam thickness. The effects of different loading and repair parameters on the variation of the J-integral were analyzed. Based on these finite element calculations, we developed an analytical model for calculating the J-integral as a function of the various parameters. The results showed good agreement between the developed model and the finite element calculations.