Application of mineral admixtures and steel fibers in experimental compositions for reactive powders concrete
DOI:
https://doi.org/10.33448/rsd-v10i1.11910Keywords:
UHPC; Mineral Admixtures; Heat Treatment; Steel fibers.Abstract
Concrete is a material used in various applications, involving paving, sanitation, infrastructure and superstructure works, dams, bridges, and architectural elements, but for certain applications their physical and mechanical properties are affected by intense degradation agents, motivating the search for artifacts that improve these properties and increase the useful life and durability of matrix materials cement industry. The objective of this work is to clarify the influence of different mix of superplasticizer, steel fibers, water/cement factor, different types of mineral admixtures, besides the type of thermal treatment and method of cylindrical concrete molds of reactive powders, evaluating the resistance to axial compression at the ages of 7 and 14 days. 17 compositions were defined, by mass, for the manufacture of concretes, divided into two stages: the first composed of 10 compositions, and the second by 7 compositions. It was used CP-V ARI cement, sand, metakaolin, silica fume, superplasticizer and kneading water with temperature between 1 and 3°C. After the conformation of the cylindrical molds of dimensions 5x10cm with the aid of a portable immersion vibrator, the specimens were unmolded after 24 hours and received thermal treatment with periods of pre-cure and isotherm that varied according to the defined trait. According to the results obtained, the reduction of the w/c factor and the superplasticizer additive presented higher resistance to compression, however, this reduction in an excessive way impairs the hydration process, implying in the incomplete hydration of all the cement particles, resulting in less resistance. It was observed that the application of thermal treatment and densification by means of layer immersion vibrators acted as essential factors in the increase of the resistances, and that the isotherm time of the composite corroborates the respective increase, until its stabilization, in the temperatures studied.
References
Andrade, T. C. C. S. (2015). Avaliação do tipo de cura nas propriedades de concretos de pós reativos. Dissertação de mestrado, Universidade Federal do Paraná, Curitiba, PR, Brasil.
Associação Brasileira de Normas Técnicas. ABNT NBR 5739 – Concreto – Ensaio de compressão de corpos-de-prova cilíndricos. Rio de Janeiro, 2007.
Biz, C. E. (2001). Concreto de pós reativos. Dissertação de mestrado, Universidade Estadual de Campinas, Campinas, SP, Brasil.
Cunha Oliveira, J. V., Chagas, L. S. V. B., Meira, F. F. D. A., Carneiro, A. M. P., & Melo Neto, A. A. (2020). Study of the potential of adhesion to the substrate of masonry and tensile in the flexion in mortars of coating with gray of the sewage sludge. Materials Science Forum, 1012, 256-261. https://doi.org/10.4028/www.scientific.net/MSF.1012.256
Dixit, A., Du, H., & Pang, S. D. (2020). Marine clay in ultra-high-performance concrete for filler substitution. Construction and Building Materials, 263, 120250. https://doi.org/10.1016/j.conbuildmat.2020.120250
Figueiredo, A. D. (2011). Concreto reforçado com fibras. Tese de livre docência, Universidade de São Paulo, São Paulo, SP, Brasil.
Kang, S. H., & Hong, S. G., Moon, J. (2019). The use of rice husk ash as reactive filler in ultra-high performance concrete. Cement and Concrete Research, 115, 389-400. https://doi.org/10.1016/j.cemconres.2018.09.004
Liu, T., Wei, H., Zou, D., Zhou, A., & Jian, H. (2020). Utilization of waste cathode ray tube funnel glass for ultra-high performance concrete. Journal of Cleaner Production, 249, 119333. https://doi.org/10.1016/j.jclepro.2019.119333
Mallmann, P. F. (2013). Concreto de pós reativos: adição de nanosílica. Monografia de graduação, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.
Oliveira, J. V. C. (2020). State of the art of the development of sustainable concrete for applications in conventional structures. Research, Society and Development, 9 (11), 1-19. http://dx.doi.org/10.33448/rsd-v9i11.10272
Pelisser, F., Gleize, P. J. P., & Mikowski, A. (2009). Propriedades nanomecânicas do silicato de cálcio hidratado de síntese. Ambiente Construído, 9 (42), 129-139. http://dx.doi.org/10.1590/s1678-86212009000400523
Perim, J. R. (2013). Influência do metacaulim na durabilidade de concretos usuais de mercado sujeitos à carbonatação acelerada. Dissertação de mestrado, Universidade Federal de Goiás, Goiânia, GO, Brasil.
Richard, P., & Cheyrezy, M. (1995). Composition of reactive powder concretes. Cement and Concrete Research, 25 (7), 1501-1511. https://doi.org/10.1016/0008-8846(95)00144-2
Rigo, L. A. (2016). Estudo da sinergia entre nano sílica e micro sílica em argamassas para aplicação em concretos como proposta de melhoria de desempenho. Monografia de graduação, Universidade Tecnológica Federal do Paraná, Pato Branco, PR, Brasil.
Seitenfuss, A. B., Lima, M. S., & Silva, A. W. (2014). Estudo de dosagem de concreto de alto desempenho. In: 21º CBECIMAT, Cuiabá, Mato Grosso, Brasil, 2014. <https://bit.ly/2MXMIGx>.
Sohail, M. G., Kahraman, R., Nuaimi, N. A., Gencturk, B., & Alnahhal, W. (2021). Durability characteristics of high and ultra-high performance concretes. Journal of Building Engineering, 33, 101669. https://doi.org/10.1016/j.jobe.2020.101669
Tutikian, B. F., Isaia, G. C., & Helene, P. (2011). Concreto de alto e ultra-alto desempenho. In: Isaia, G. C. (Org.). Concreto: Ciência e Tecnologia: IBRACON, 1238-1325.
Vanderlei, R. D. (2004). Análise experimental do concreto de pós reativos: dosagem e propriedades mecânicas. Tese de doutorado, Universidade de São Paulo, São Carlos, SP, Brasil.
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