Fresh concrete consistency effect on thin-walled columns creep phenomenon

Madureira, Edmilson Lira; Melo, Luane Assunção Paiva

Fresh concrete consistency effect on thin-walled columns creep phenomenon

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dc.contributor.author	Madureira, Edmilson Lira
dc.contributor.author	Melo, Luane Assunção Paiva
dc.date.accessioned	2020-10-13T14:55:25Z
dc.date.available	2020-10-13T14:55:25Z
dc.date.issued	2018
dc.description.resumo	A concrete structural member when kept under sustained load presents progressive strains over time, associated to the material creep. The fresh concrete consistency, specially, exerts some effect on that phenomenon. The pioneering formulations developed to modelling the creep of concrete are applicable, directly, to the cases for which the stress magnitude remains constant. Its application to reinforced concrete structural members, that exhibits changes in the magnitude of the stresses over such a time dependent phenomenon, requires simplifications from which result the memory models, whose implementation presents the disadvantage of involving the history of the stresses storage. The State Models were developed to overcome these difficulties, as they result of integral calculus scheme improvement, dispensing such computational memory storage. The subject of this work is the analysis of creep strains on reinforced concrete thin-walled columns, emphasizing the fresh concrete consistency efecct, on the base of a state model, fixing the values of its physical parameters from the NBR 6118/14 proceedings [1]. The obtained results showed the occurrence of stresses transfer from the mass of the concrete to the reinforcement steel bars, that was more pronounced in those cases for which the slump test abatement were the highest and, in some cases, including, it induced the material yielding condition	pt_BR
dc.identifier.citation	MADUREIRA, E. L.; MELO, L.A.P.. Fresh Concrete Consistency Effect on Thin-Walled Columns Creep Phenomenon. Revista IBRACON de Estruturas e Materiais, v. 11, p. 644-651, 2018. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952018000300644. Acesso em: 06 out. 2020 http://dx.doi.org/10.1590/S1983-41952018000300012	pt_BR
dc.identifier.doi	10.1590/s1983-41952018000300012
dc.identifier.issn	1983-4195
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30390
dc.language	en	pt_BR
dc.publisher	Revista IBRACON de Estruturas e Materiais	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Reinforced concrete	pt_BR
dc.subject	Thin-walled-column	pt_BR
dc.subject	Creep	pt_BR
dc.subject	Modelling	pt_BR
dc.title	Fresh concrete consistency effect on thin-walled columns creep phenomenon	pt_BR
dc.title.alternative	Efeito da consistência do concreto fresco sobre o fenômeno de fluência em pilares parede	pt_BR
dc.type	article	pt_BR