Artículos
Propiedades de ingeniería de concretos híbridos activados alcalinamente basados en altos contenidos de ceniza volante: un análisis a largas edades
William Gustavo Valencia-Saavedra- Rafael Andrés Robayo-Salaza
Publicado 2021-05-10
Palabras clave
- materiales de activación alcalina,
- híbridos,
- ceniza volante,
- escoria de alto horno,
- cemento portland
- propiedades mecánicas,
- durabilidad ...Más
Cómo citar
Valencia-Saavedra, W. G., Robayo-Salaza, R. A., & Mejía de Gutiérrez, R. (2021). Propiedades de ingeniería de concretos híbridos activados alcalinamente basados en altos contenidos de ceniza volante: un análisis a largas edades. Revista UIS Ingenierías, 20(3), 1–18. https://doi.org/10.18273/revuin.v20n3-2021001
Resumen
Este artículo presenta un análisis a largas edades (≤ 4 años) de las propiedades físico-mecánicas y de durabilidad de concretos híbridos basados en la activación alcalina de una ceniza volante (CV) colombiana de alto contenido de inquemados (sin valor comercial). Se evaluó el efecto del tipo de fuente de calcio, utilizando adiciones del 20 % de escoria siderúrgica de alto horno (ESC) y cemento portland (OPC), en comparación con un concreto basado 100 % en CV. Las propiedades evaluadas incluyen la resistencia a la compresión, tracción indirecta, absorción, densidad, porosidad, sorptividad, resistencia a sulfatos, resistencia al ataque ácido, permeabilidad al ion cloruro, susceptibilidad a la carbonatación y resistencia residual a elevadas temperaturas. Los resultados obtenidos demostraron la viabilidad de alcanzar valores de resistencia a la compresión que ascienden a valores entre 40 y 93 MPa a edades de curado de 4 años. En general, se demostró el buen desempeño físico-mecánico y durable de los concretos GCV/ESC y GCV/OPC.
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[13] G. S. Ryu, Y. B. Lee, K. T. Koh, Y. S. Chung, "The mechanical properties of fly ash-based geopolymer concrete with alkaline activators", Constr. Build. Mater., vol. 47, pp. 409-418, 2013, doi: 10.1016/j.conbuildmat.2013.05.069
[14] M. Šejnoha, M. Brouček, E. Novotná, Z. Keršner, D. Lehký, P. Frantı́k, "Fracture properties of cement and alkali activated fly ash based concrete with application to segmental tunnel lining", Adv. Eng. Softw., vol. 62-63, pp. 61-71, 2013, doi: 10.1016/j.advengsoft.2013.04.009
[15] B. Singh, G. Ishwarya, M. Gupta, S. K. Bhattacharyya, "Geopolymer concrete: A review of some recent developments", Constr. Build. Mater., vol. 85, pp. 78-90, 2015, doi: 10.1016/j.conbuildmat.2015.03.036
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[17] M. Talha J, O. Kayali, A. Khennane, J. Black, "A mix design procedure for low calcium alkali activated fly ash-based concretes", Constr. Build. Mater., vol. 79, pp. 301-310, 2015, doi: 10.1016/j.conbuildmat.2015.01.048
[18] S. E. Wallah, "Drying Shrinkage of Heat-Cured Fly Ash-Based Geopolymer Concrete", Mod. Appl. Sci., vol. 3, no. 12, pp. 14, 2009, doi: 10.5539/mas.v3n12p14
[19] W. Al-Kutti, M. Nasir, M. A. M. Johari, A. S. Islam, A. A. Manda, N. I. Blaisi, "An overview and experimental study on hybrid binders containing date palm ash, fly ash, OPC and activator composites", Constr. Build. Mater., vol. 159, pp. 567-577, 2018, doi: 10.1016/j.conbuildmat.2017.11.017
[20] M. Dong, M. Elchalakani, A. Karrech, "Curing conditions of alkali-activated fly ash and slag mortar", J. Mater. Civ. Eng., vol. 32, no. 6, pp. 04020122, 2020, doi: 10.1061/(ASCE)MT.1943-5533.0003233
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