Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/55341
Título: Bond behavior of a bio-aggregate embedded in cement-based matrix
Palavras-chave: Macaúba endocarp
Bio-aggregate
Lightweight concrete
Image analysis
Numerical modeling
Endocarpo macaúba
Bioagregados
Concreto leve
Análise de imagem
Modelagem numérica
Data do documento: 2022
Editor: MDPI
Citação: FERREIRA, S. R. et al. Bond behavior of a bio-aggregate embedded in cement-based matrix. Materials, [S. l.], v. 15, 6151, 2022. DOI: 10.3390/ma15176151.
Resumo: This paper investigates the bond behavior between a bio-aggregate and a cement-based matrix. The experimental evaluation comprised physical, chemical, image, and mechanical characterization of the bio-aggregate. The image analyses about the bio-aggregate’s outer structure provided first insights to understand the particularities of this newly proposed bio-aggregate for use in cementitious materials. A mineral aggregate (granitic rock), largely used as coarse aggregate in the Brazilian civil construction industry, was used as reference. The bond behavior of both aggregates was evaluated via pull-out tests. The results indicated that both aggregates presented a similar linear elastic branch up to each respective peak loads. The peak load magnitude of the mineral aggregate indicated a better chemical adhesion when compared to the bio-aggregate’s. The post-peak behavior, however, indicated a smoother softening branch for the bio-aggregate, corroborated by the microscopy image analyses. Although further investigation is required, the macaúba crushed endocarp was found to be a thriving bio-material to be used as bio-aggregate.
URI: http://repositorio.ufla.br/jspui/handle/1/55341
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