TY - JOUR AU - Mercedes, L. AU - Mendizábal, V. AU - Bernat-Maso, E. AU - Gil, L. PY - 2022/03/03 Y2 - 2024/03/29 TI - Performance of hemp-FRCM-strengthened beam subjected to cyclic loads JF - Materiales de Construcción JA - Mater. constr. VL - 72 IS - 345 SE - Research Articles DO - 10.3989/mc.2022.07721 UR - https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2728 SP - e270 AB - <p>Fabric-reinforced cementitious matrix (FRCM) composites are materials that are usually applied to strengthen existing structures. In this study, a hemp mesh coated with epoxy was manufactured and combined with a cementitious matrix to strengthen a concrete beam. This beam was subjected to bending cyclic loading tests and a nondestructive modal analysis test. The modal analysis was performed to determine the dynamic elastic properties of the beam under pre-cracking, post-cracking, and strengthened conditions. The beam stiffness increased following strengthening with hemp-FRCM. The results of the experimental cyclic loading test showed that the hemp-FRCM system improved the load-bearing capacity of the beam at the service limit state by 42%. Analytical and numerical models were adjusted and validated using the experimental results, and both proved to be effective calculation tools. The models accurately reproduced the behaviour of the FRCM-strengthened concrete beam if the strengthening connection could prevent sliding and mortar debonding failures.</p> ER -