Testing and performance of fiber-reinforced, self-consolidating concrete

Khayat, Kamal H.; Roussel, Y.

doi:10.1007/bf02479648

Cited by 103 publications

(66 citation statements)

References 4 publications

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“…Optimization and performance of air-entrained, SCC was reported by Khayat (2000). He indicated the possibility of proportioning air-entrained SCC of high stability and resistance to blockage.…”

Section: Introductionmentioning

confidence: 99%

Self-Consolidating Concrete Incorporating High Volume of Fly Ash, Slag, and Recycled Asphalt Pavement

Mahmoud

Ibrahim

El-Chabib

et al. 2013

Int J Concr Struct Mater

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The use of sustainable technologies such as supplementary cementitious materials (SCMs), and/or recycled materials is expected to positively affect the performance of concrete mixtures. However, it is imperative to qualify and implement such mixtures in practice, if the required specifications of their intended application are met. This paper presents the results of a laboratory investigation of self-consolidating concrete (SCC) containing sustainable technologies. Twelve mixes were prepared with different combinations of fly ash, slag, and recycled asphalt pavement (RAP). Fresh and hardened concrete properties were measured, as expected the inclusion of the sustainable technologies affected both fresh and hardened concrete properties. Analysis of the experimental data indicated that inclusion of RAP not only reduces the ultimate strength, but it also affected the compressive strength development rate. The addition of RAP to mixes showed a consistent effect, with a drop in strength after 3, 14, and 28 days as the RAP content increased from 0 to 50 %. However, most of the mixes satisfied SCC fresh properties requirements, including mixes with up to 50 % RAP. Moreover, several mixes satisfied compressive strength requirement for pavements and bridges, those mixes included relatively high percentages of SCMs and RAP.

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Section: Introductionmentioning

confidence: 99%

Self-Consolidating Concrete Incorporating High Volume of Fly Ash, Slag, and Recycled Asphalt Pavement

Mahmoud

Ibrahim

El-Chabib

et al. 2013

Int J Concr Struct Mater

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“…O destaque do CAA se deve ao alcance no estado fresco de três propriedades: capacidade de preenchimento, habilidade de passagem por obstáculos e resistência à segregação [2,3]. Desde então, o CAA vem sendo estudado por muitos pesquisadores [1,2,3,4,5,6].…”

Section: -Introduçãounclassified

Estudo do volume de pasta em diferentes composições de agregados para concreto autoadensável

Melo¹,

Monteiro²,

Gomes³

2018

Libro De Comunicaciones / Livro Das Comunicações

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RESUMOO artigo aborda a redução do volume de pasta em concretos autoadensáveis (CAA) com diferentes composições de agregados, verificando o atendimento às propriedades de autoadensabilidade e resistência à compressão. Estudos têm mostrado que as composições de agregados influenciam no volume de pasta necessário para o alcance da autoadensabilidade. Porém, elevados volumes de pasta têm sido utilizados na obtenção de CAA sem nenhum critério de avaliação. Neste contexto, o estudo avalia as propriedades de autoadensabilidade e de resistência à compressão de CAA com diferentes volumes de pasta e composições de agregados. Os CAAs com diferentes composições (binária, ternária e quaternária) de agregados foram inicialmente obtidos com 40 % de pasta, em seguida, novos CAAs foram obtidos com a redução do volume de pasta para 38 %, 35 % e 33 %. Nestes concretos, as propriedades de autoadensabilidade foram avaliadas através dos ensaios de espalhamento (slump flow), Funil V e caixa L. Para os CAA, com 40 % de pasta, foram obtidas curvas experimentais obtendo o módulo de distribuição (q) do modelo de Alfred, o que mostrou que nem sempre o CAA atendem aos "q" indicados na literatura. Os resultados mostraram que o CAA com composição quaternária de agregados atendeu aos parâmetros de autoadensabilidade praticamente em todos os volumes de pasta utilizados, e que o atendimento com as composições binária e ternária, depende do volume de pasta. A resistência à compressão tornou-se maior com o aumento do volume de pasta e do número de combinações de agregados.PALAVRAS CHAVE: composição de agregados, volume de pasta, concreto autoadensável.

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“…The most important properties of fiber concrete are energy absorption, formability, and resistance against strikes. These characteristics help FRC to play an important role in concrete technology and to be a cost-effective material in structural issues (Alberti, Enfedaque, & Gálvez, 2014;Ardanuy, Claramunt, Dias, & Filho, 2015;Banthia, Majdzadeh, Wu, & Bindiganavile, 2014;Jiang, Fan, Wu, & Chen, 2014;Khayat & Roussel, 2000;Nehdi and Ladanchuk, 2004).…”

Section: Introductionmentioning

confidence: 99%

Research on Chloride Penetration Resistance of Hybrid Fiber Reinforced Self-Compacting Concrete

Long¹,

Mai²,

Shi³

et al. 2016

Proceedings of the 5th International Conference on the Durability of Concrete Structures

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The properties of chloride penetration of hybrid fiber reinforced self-compacting concrete (SCC) were investigated in this study. The results show that the chloride penetration resistance of concrete can be improved by single incorporation either carbon or cellulose fibers. The concrete chloride diffusion coefficient D RCM of 12-cm length carbon SCC with fiber content of 1.7, 2.72, and 3.4 kg/m 3 decreases by 10.3, 25.5, and 18.2% compared to reference concrete without any fibers, respectively. Moreover, the concrete chloride diffusion coefficient D RCM of cellulose SCC with fiber content of 1.2, 1.6, and 2.0 kg/m 3 decreases by 18.8, 22.4, and 26.7% compared to reference concrete, respectively. Based on the results of orthogonal experimental design, the chloride diffusion coefficients D RCM of hybrid fiber reinforced SCC are listed in order of importance, as follows: length of carbon fiber > content of carbon fiber > content of cellulose fiber; furthermore, the hybrid of 2.72-kg/m 3 carbon fiber with length of 12 mm and 2.0-kg/m 3 cellulose fiber exhibits the most significant effect on chloride diffusion coefficients D RCM of SCC.

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Testing and performance of fiber-reinforced, self-consolidating concrete

Cited by 103 publications

References 4 publications

Self-Consolidating Concrete Incorporating High Volume of Fly Ash, Slag, and Recycled Asphalt Pavement

Self-Consolidating Concrete Incorporating High Volume of Fly Ash, Slag, and Recycled Asphalt Pavement

Estudo do volume de pasta em diferentes composições de agregados para concreto autoadensável

Research on Chloride Penetration Resistance of Hybrid Fiber Reinforced Self-Compacting Concrete

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