An analytical bond stress-slip model for a TRM composite compatible with rammed earth

A textile reinforced mortar (TRM) compatible with rammed earth structures is proposed to mitigate their seismic vulnerability. Being TRM a composite material, defining the matrix-fibre interface relationship is fundamental to predict the performance of strengthened structures. In this framework, an existing analytical approach with a newly damage model was adapted to a specific TRM composite system that is not yet addressed in literature. Hence, an adhesion-friction law was calibrated with basis on recent experimental observations. In conclusion, the proposed algorithm reproduces adequately the elastic and nonlinear response of the matrix-fibre interface and predicts with accuracy the pull-out strength of the composite.This work was partly financed by FEDER funds through the Operational Programme Competitiveness Factors (COMPETE 2020) and by national funds through the Foundation for Science and Technology (FCT) within the scope of project SafEarth - PTDC/ECM-EST/2777/2014 (POCI-01-0145-FEDER-016737). The support from grant SFRH/BD/131006/2017 is also acknowledged