Comportamento de fluência e retração de compósitos reforçados com fibras de carbono: uma revisão
DOI:
https://doi.org/10.52428/20758944.v17i51.133Palabras clave:
Matriz cimentícia, Matriz polimérica, Fluência, Retração, Pré-fissuraçãoResumen
Considerando a relevância dos fenômenos fluência e retração dos concretos, o presente estudo tem como objetivo geral desenvolver uma revisão da literatura sobre estes dois comportamentos em compósitos reforçados com fibras de carbono. Foi realizada uma busca nos bancos de dados “Web of Science” e “Scopus” com combinações específicas de palavras-chave. A seleção foi baseada nos estudos mais relevantes de cada tema, priorizando a propriedade mecânica de fluência. Com base nos estudos apresentados, verificou-se que a fibra de carbono influencia significativamente na capacidade de restringir a fluência e o encolhimento dos concretos. Outro ponto observado no estudo é que fibras com módulo de elasticidade maior do que o de concreto simples têm a capacidade de resistir a fluência, ao contrário das fibras com menor módulo, mesmo em ensaios de fluência com concretos já pré-fissurados. Embora existam vários estudos, ainda não há um entendimento completo do assunto. O comportamento de fluência e retração pode ser explorado em compósitos reforçados com fibras de carbono quando expostos a altas temperaturas, em concretos de ultra alto desempenho, em pós-fissuração de elementos estruturais, entre outros.
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Derechos de autor 2021 Lidianne do Nascimento Farias, Joaquin Humberto
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