Predicting the out-of-plane flexural capacity of a TRM-strengthened Unreinforced Masonry (URM) wall

Modern structural engineering has significant hurdles in retrofitting and strengthening masonry buildings to maintain structural safety under seismic or exceptional loads. Textile reinforced mortar is one of the most important techniques to retrofit masonry buildings. Analytical investigations to assess the TRM contribution to the strengthened structures are limited in the literature Therefore, this work presents predicting the out-of-plane flexural capacity of a TRM-strengthened unreinforced masonry (URM) wall by adopting two expressions from literature. The investigation of expressions' accuracy by comparing analytical results with experimental results for 108 specimens in the database. TRM stress-strain behavior was assumed depending on the results of bond tests on TRM strips applied to the particular substrate considered and of tensile testing on the component that debonds. The results indicate that the equation developed in the literature to predict the capacity of FRP-retrofitted URM walls provides acceptable results to predict the capacity of TRM-retrofitted URM walls. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.