Compressive strength of reduced concrete specimens considering dimensional distortion of coarse aggregates.

dc.contributor.authorAzevedo, Carlos Felipe de
dc.contributor.authorCarvalho, José Maria Franco de
dc.contributor.authorMendes, Júlia Castro
dc.contributor.authorCastro, Arthur Silva Santana
dc.contributor.authorBarreto, Rodrigo Rony
dc.contributor.authorPeixoto, Ricardo André Fiorotti
dc.date.accessioned2021-11-19T21:19:55Z
dc.date.available2021-11-19T21:19:55Z
dc.date.issued2020pt_BR
dc.description.abstractThe present study investigates the mechanical behavior of small cylindrical specimens (£50 100 mm) in relation to the minimum standard size (£100 200 mm) recommended by ASTM and Brazilian codes. Statistical and dimensional analyses were performed for three different classes of compressive strength (20, 30, and 40 MPa), and four grades of coarse aggregates (Dmax 9.5, 12.5, 19, and 25 mm). To this purpose, the Student’s t-Test for two means and equations from the Similitude Theory were applied. The following evaluations were performed: a) influence of the dimensional distortion of aggregates on the compressive strength of small concrete specimens; b) analyses through hypothesis testing between strength means; c) the use of prediction coefficients with statistical reliability for correcting the dimensional distortion of aggregates; and d) influence of the wall effect for different specimen sizes and concrete mixes. The results showed that the reduced and the standard specimens have similar compressive strengths, despite the reduced ones having presented higher variability of results. Also, innovative quantitative results from Wall Effect analysis show agreement with the strength results and illustrate the phenomena from a new perspective.pt_BR
dc.identifier.citationAZEVEDO, C. F. de. et al. Compressive strength of reduced concrete specimens considering dimensional distortion of coarse aggregates. Construction and Building Materials, v. 257, p. 119448, out. 2020. Disponível em: <https://www.sciencedirect.com/science/article/abs/pii/S0950061820314537?via%3Dihub>. Acesso em: 12 set. 2021.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.conbuildmat.2020.119448pt_BR
dc.identifier.issn0950-0618
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/13973
dc.identifier.uri2https://www.sciencedirect.com/science/article/abs/pii/S0950061820314537?via%3Dihubpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectCompressive strengthpt_BR
dc.subjectConcrete specimenpt_BR
dc.subjectSimilitude theorypt_BR
dc.subjectWall effectpt_BR
dc.subjectPortland cement concretept_BR
dc.titleCompressive strength of reduced concrete specimens considering dimensional distortion of coarse aggregates.pt_BR
dc.typeArtigo publicado em periodicopt_BR

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