Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens

Abstract Concrete is one of the most important material for civil construction, given its high applicability. C Compressive strength (fc) is one of the main parameters to evaluate the concrete quality. Concrete of the same mixing volume may vary even with the same materials preparation. Concrete spe...

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Autores principales:	Lerner,Lucas R., Ott,Maira J., Führ,Lucas M., Ehrenbring,Hinoel Z., Pacheco,Fernanda, Tutikian,Bernardo F.
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2020
Materias:	Concrete Casting Surface treatment Compressive strength
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000100159
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spelling	oai:scielo:S0718-915X20200001001592020-05-26Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimensLerner,Lucas R.Ott,Maira J.Führ,Lucas M.Ehrenbring,Hinoel Z.Pacheco,FernandaTutikian,Bernardo F. Concrete Casting Surface treatment Compressive strength Abstract Concrete is one of the most important material for civil construction, given its high applicability. C Compressive strength (fc) is one of the main parameters to evaluate the concrete quality. Concrete of the same mixing volume may vary even with the same materials preparation. Concrete specimens molding, and its surface regularization contribute to these variations that are often hard to measure. Therefore, this paper aims to determine the variations in compressive strength of concrete, simulating different processes for casting, initial curing and surface treatment. In stage 1, the specimens were subjected to five surface treatment types, resulting in variations of 30% for concrete fc, whereas grinding specimens reached the highest 28-day compressive strength, so they were carried over to the next stage. In stage 2, specimens were produced as per ABNT NBR 5738 (2015) and with induced errors in casting and initial curing. The specimen produced according to the standard achieved the second-best result, whose 28-day fc was3% lower than that of the similar method, despite leaving the specimen uncovered for the first 24 hours after casting. Specimens produced in metal cylinder form works shows higher results than those produced in polyvinyl chloride molds (PVC).info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.19 n.1 20202020-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000100159en10.7764/rdlc.19.1.159-169
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Concrete Casting Surface treatment Compressive strength
spellingShingle	Concrete Casting Surface treatment Compressive strength Lerner,Lucas R. Ott,Maira J. Führ,Lucas M. Ehrenbring,Hinoel Z. Pacheco,Fernanda Tutikian,Bernardo F. Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
description	Abstract Concrete is one of the most important material for civil construction, given its high applicability. C Compressive strength (fc) is one of the main parameters to evaluate the concrete quality. Concrete of the same mixing volume may vary even with the same materials preparation. Concrete specimens molding, and its surface regularization contribute to these variations that are often hard to measure. Therefore, this paper aims to determine the variations in compressive strength of concrete, simulating different processes for casting, initial curing and surface treatment. In stage 1, the specimens were subjected to five surface treatment types, resulting in variations of 30% for concrete fc, whereas grinding specimens reached the highest 28-day compressive strength, so they were carried over to the next stage. In stage 2, specimens were produced as per ABNT NBR 5738 (2015) and with induced errors in casting and initial curing. The specimen produced according to the standard achieved the second-best result, whose 28-day fc was3% lower than that of the similar method, despite leaving the specimen uncovered for the first 24 hours after casting. Specimens produced in metal cylinder form works shows higher results than those produced in polyvinyl chloride molds (PVC).
author	Lerner,Lucas R. Ott,Maira J. Führ,Lucas M. Ehrenbring,Hinoel Z. Pacheco,Fernanda Tutikian,Bernardo F.
author_facet	Lerner,Lucas R. Ott,Maira J. Führ,Lucas M. Ehrenbring,Hinoel Z. Pacheco,Fernanda Tutikian,Bernardo F.
author_sort	Lerner,Lucas R.
title	Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
title_short	Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
title_full	Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
title_fullStr	Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
title_full_unstemmed	Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
title_sort	influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000100159
work_keys_str_mv	AT lernerlucasr influenceofthemoldingprocessanddifferentsurfaceregularizationmethodsonthecompressivestrengthofconcretespecimens AT ottmairaj influenceofthemoldingprocessanddifferentsurfaceregularizationmethodsonthecompressivestrengthofconcretespecimens AT fuhrlucasm influenceofthemoldingprocessanddifferentsurfaceregularizationmethodsonthecompressivestrengthofconcretespecimens AT ehrenbringhinoelz influenceofthemoldingprocessanddifferentsurfaceregularizationmethodsonthecompressivestrengthofconcretespecimens AT pachecofernanda influenceofthemoldingprocessanddifferentsurfaceregularizationmethodsonthecompressivestrengthofconcretespecimens AT tutikianbernardof influenceofthemoldingprocessanddifferentsurfaceregularizationmethodsonthecompressivestrengthofconcretespecimens
_version_	1714206305664630784

Influence of the molding process and different surface regularization methods on the compressive strength of concrete specimens

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