Performance of hemp-FRCM-strengthened beam subjected to cyclic loads
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hdl:2117/384645
Tipus de documentArticle
Data publicació2022-03-03
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Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
Abstract
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.
CitacióMercedes [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.
ISSN1988-3226
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2728-Article Te ... y)-11110-1-10-20220303.pdf | 2,573Mb | Visualitza/Obre |