Tensile characterization of PBO-FRCM composites

Retrofitting of existing concrete and masonry structures with fibre-reinforced polymers (FRP) is a consolidated technology. Recently, Fabric Reinforced Cementitious Matrix (FRCM)has been proposedas effective sustainable and durable alternative to repair and strength structures. The latter systems consist of open fabric meshesembedded in a cementitious matrix that better perform at high temperature, show higher reversibility, removability, compatibility with the substrate and vapor permeability.Load transfer mechanisms at fiber-matrix interface and frictional bond among the internal fibers within the yarn, are complex and affect mechanical behavior under tensile loads. Furthermore, the evaluation of tensile response and identification of the constitutive behavior are essential in structural reinforcement design and verification. Despite their wide diffusion, standardized methodologies and test configurations are not currently available and procedures differ in specimens geometry and dimensions as well as in testing set-up and load application mode. The aim of this work is to provide a further contribution in the tensile characterization of PBO-FRCM composite provided by Ruredil –San Donato Milanese (MI).