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oai:recercat.cat:2117/3846452026-01-18T08:25:42Zcom_2072_1033col_2072_452950

Performance of hemp-FRCM-strengthened beam subjected to cyclic loads Comportamiento de vigas reforzadas con cáñamo FRCM bajo cargas cíclicas Mercedes Cedeño, Luis Enrique Mendizábal Dinucci, Virginia Dolores Bernat Masó, Ernest Gil Espert, Lluís Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria Universitat Politècnica de Catalunya. CATMech - Centre Avançat de Tecnologies Mecàniques Universitat Politècnica de Catalunya. LITEM - Laboratori per a la Innovació Tecnològica d'Estructures i Materials Àrees temàtiques de la UPC::Edificació::Materials de construcció::Nous materials de construcció Composite construction FRCM Concrete Strengthening Fibres Hemp Materials de construcció 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. Objectius de Desenvolupament Sostenible::11 - Ciutats i Comunitats Sostenibles Objectius de Desenvolupament Sostenible::9 - Indústria, Innovació i Infraestructura Postprint (published version) 2022-03-03 Article Mercedes [et al.]. Performance of hemp-FRCM-strengthened beam subjected to cyclic loads. "Materiales de construcción", 3 Març 2022, vol. 72, núm. 345, p. 1-17. 1988-3226 https://hdl.handle.net/2117/384645 10.3989/mc.2022.07721 eng https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2728/3593 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099589-B-I00/ES/EVALUACION MULTINIVEL DE LA VULNERABILIDADD SISMICA Y MITIGACION DE RIESGO DE EDIFICIOS DE OBRA DE FABRICA EN CENTROS URBANOS HISTORICOS RESILIENTES/ http://creativecommons.org/licenses/by-nc-nd/4.0/ Open Access Attribution-NonCommercial-NoDerivatives 4.0 International 17 p. application/pdf