Numerical validation of a heterogeneous FE approach for the analysis of TRM debonding on curved masonry substrates

Retrofitting of curved masonry elements as arches, vaults and domes is often a key aspect in a process of vulnerability mitigation of historical structures. Lately, the external application of composite materials embedded within inorganic matrix has met the requirements suggested by ISCARSAH guidelines. In literature, great efforts have been addressed for a correct identification of tensile strength and ideal bond length of TRM reinforcement. On the other hand, few data are available for a deep understanding of the effect of the curvature on the bond properties. This paper aims to provide a numerical tool enable to predict such a fundamental aspect when a reinforcement on curved masonry elements is designed. Experimental data are used and through comparison of curves load-displacement, the capabilities of the method are shown.