Fatigue behavior of steel fiber reinforced geopolymer concrete

Geopolymer concrete (GCC) is a high-performance concrete, where a geopolymer mass serves to bond coarse aggregates, steel fiber and any non-reactive materials. The development of this concrete is an important step for the production of ecologically correct concrete. Indeed, in addition to reducing C...

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Autores principales:	Alisson Clay Rios da Silva, Bianca Mendes Almeida, Mathaus Moraes Lucas, Verônica Scarpini Cândido, Kamila Sindy Pinheiro da Cruz, Michelle Souza Oliveira, Afonso Rangel Garcez de Azevedo, Sergio Neves Monteiro
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Geopolymer Steel fiber Concrete Fatigue Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/eb9b47e0941749f6a88dba2385bc00f0
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id	oai:doaj.org-article:eb9b47e0941749f6a88dba2385bc00f0
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spelling	oai:doaj.org-article:eb9b47e0941749f6a88dba2385bc00f02021-12-04T04:34:20ZFatigue behavior of steel fiber reinforced geopolymer concrete2214-509510.1016/j.cscm.2021.e00829https://doaj.org/article/eb9b47e0941749f6a88dba2385bc00f02022-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521003442https://doaj.org/toc/2214-5095Geopolymer concrete (GCC) is a high-performance concrete, where a geopolymer mass serves to bond coarse aggregates, steel fiber and any non-reactive materials. The development of this concrete is an important step for the production of ecologically correct concrete. Indeed, in addition to reducing CO2, a common fact in cement industries, it also uses waste. The fatigue behavior of GCC reinforced with steel fiber was evaluated by dynamically cycled tensile tests and compared with ordinary Portland concrete (OPCC). In both types of concrete, the effects of different cement aging time (1, 7 and 28 days) and ratio of minimum applied stress level (R = σmin/ σflex) with quasi-static flexural strength (0.07, 0.20 and 0.40) as well as the volume fraction of added steel fiber (0.5 and 1.0 vol%) were disclosed. The GCC fatigue resistance associated with the number of cycle to rupture was, in average, higher than that of OPCC and, in particular 96% superior after 7 days of aging. As for the minimum applied stress ratio, the results showed a better performance of the GCC with unchanged mean values 50% higher than those of OPCC. Regarding the addition of steel fibers, comparable values were found for both GCC and OPCC within the standard deviation. These values are significantly higher, more than 4 times, than those of unreinforced concretes. The GCC SEM fractographs revealed a better cement matrix interfacial adhesion with both aggregates and steel fibers, as compared with OPCC. This was attributed to fibrous crystalline phase formation at the GCC cement interfaces.Alisson Clay Rios da SilvaBianca Mendes AlmeidaMathaus Moraes LucasVerônica Scarpini CândidoKamila Sindy Pinheiro da CruzMichelle Souza OliveiraAfonso Rangel Garcez de AzevedoSergio Neves MonteiroElsevierarticleGeopolymerSteel fiberConcreteFatigueMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 16, Iss , Pp e00829- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geopolymer Steel fiber Concrete Fatigue Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Geopolymer Steel fiber Concrete Fatigue Materials of engineering and construction. Mechanics of materials TA401-492 Alisson Clay Rios da Silva Bianca Mendes Almeida Mathaus Moraes Lucas Verônica Scarpini Cândido Kamila Sindy Pinheiro da Cruz Michelle Souza Oliveira Afonso Rangel Garcez de Azevedo Sergio Neves Monteiro Fatigue behavior of steel fiber reinforced geopolymer concrete
description	Geopolymer concrete (GCC) is a high-performance concrete, where a geopolymer mass serves to bond coarse aggregates, steel fiber and any non-reactive materials. The development of this concrete is an important step for the production of ecologically correct concrete. Indeed, in addition to reducing CO2, a common fact in cement industries, it also uses waste. The fatigue behavior of GCC reinforced with steel fiber was evaluated by dynamically cycled tensile tests and compared with ordinary Portland concrete (OPCC). In both types of concrete, the effects of different cement aging time (1, 7 and 28 days) and ratio of minimum applied stress level (R = σmin/ σflex) with quasi-static flexural strength (0.07, 0.20 and 0.40) as well as the volume fraction of added steel fiber (0.5 and 1.0 vol%) were disclosed. The GCC fatigue resistance associated with the number of cycle to rupture was, in average, higher than that of OPCC and, in particular 96% superior after 7 days of aging. As for the minimum applied stress ratio, the results showed a better performance of the GCC with unchanged mean values 50% higher than those of OPCC. Regarding the addition of steel fibers, comparable values were found for both GCC and OPCC within the standard deviation. These values are significantly higher, more than 4 times, than those of unreinforced concretes. The GCC SEM fractographs revealed a better cement matrix interfacial adhesion with both aggregates and steel fibers, as compared with OPCC. This was attributed to fibrous crystalline phase formation at the GCC cement interfaces.
format	article
author	Alisson Clay Rios da Silva Bianca Mendes Almeida Mathaus Moraes Lucas Verônica Scarpini Cândido Kamila Sindy Pinheiro da Cruz Michelle Souza Oliveira Afonso Rangel Garcez de Azevedo Sergio Neves Monteiro
author_facet	Alisson Clay Rios da Silva Bianca Mendes Almeida Mathaus Moraes Lucas Verônica Scarpini Cândido Kamila Sindy Pinheiro da Cruz Michelle Souza Oliveira Afonso Rangel Garcez de Azevedo Sergio Neves Monteiro
author_sort	Alisson Clay Rios da Silva
title	Fatigue behavior of steel fiber reinforced geopolymer concrete
title_short	Fatigue behavior of steel fiber reinforced geopolymer concrete
title_full	Fatigue behavior of steel fiber reinforced geopolymer concrete
title_fullStr	Fatigue behavior of steel fiber reinforced geopolymer concrete
title_full_unstemmed	Fatigue behavior of steel fiber reinforced geopolymer concrete
title_sort	fatigue behavior of steel fiber reinforced geopolymer concrete
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/eb9b47e0941749f6a88dba2385bc00f0
work_keys_str_mv	AT alissonclayriosdasilva fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT biancamendesalmeida fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT mathausmoraeslucas fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT veronicascarpinicandido fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT kamilasindypinheirodacruz fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT michellesouzaoliveira fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT afonsorangelgarcezdeazevedo fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete AT sergionevesmonteiro fatiguebehaviorofsteelfiberreinforcedgeopolymerconcrete
_version_	1718373004276137984

Fatigue behavior of steel fiber reinforced geopolymer concrete

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