Ultrafine GGBS and Fly Ash as Cement Replacement for Sustainable Concrete
J. Environ. Nanotechnol., Volume 13, No 3 (2024) pp. 25-30
Abstract
The construction industry is one of the major contributors to environmental degradation. Hence, it requires eco-friendly practices to make concrete more sustainable. This can be achieved by addition of mineral admixtures as a cement replacement. This process helps the environment in two ways: by reducing the carbon dioxide emission through cement replacement and by utilizing mineral admixtures such as fly ash, Ground Granulated Blast Furnace Slag (GGBS), metakaolin, rice husk ash and silica fume, which are all industrial wastes or by-products. Hence, this approach lowers the greenhouse effect and global warming by reducing carbon dioxide emissions and prevents environmental contamination by utilizing industrial wastes. This experimental study aims to find the perfect combination of mineral admixtures such as fly ash and ultrafine GGBS to maximize cement replacement in concrete without compromising its mechanical properties and achieving a more sustainable concrete for day-to-day practice. For this study, the fly ash percentage was maintained at 20% for all trials, with the ultrafine GGBS percentage varying from 15% to 30%.
Keywords: Sustainable Concrete; Ultrafine GGBS; Fly ash; Mineral Admixture.
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Reference
Desale, V., Kamble, A., Borwal, P., Ingole, A. and Pathak, S., Experimental Analysis of Partial Replacement of Cement by GGBS and Fly Ash in Concrete, Int. J. Eng. Res. Technol., 7(5), 596-598 (2018).
https://doi.org/10.17577/IJERTV7IS050244
Gupta, J., Lata, N. and Mittal, S., Effect of Addition and Replacement of GGBS and Fly ash with Cement in Concrete, Int. J. Eng. Res. Technol., 6(11), 1-7 (2018).
https://doi.org/10.17577/IJERTCONV6IS11023
IS 10262 – (2019): Concrete mix proportioning guidelines, Bureau of Indian standards, New Delhi.
IS 1489 (Part 1) – (1991): Specification for Portland Pozzolana cement, Part 1: Fly ash based, Bureau of Indian standards, New Delhi.
IS: 1199 – (1959): Method of sampling and analysis of concrete Bureau of Indian standards, New Delhi.
IS: 2386 (Part- I) - 1963: Indian standards code of practice for methods of test for Aggregate for concrete, Bureau of Indian standard Institution, New Delhi.
IS: 383 – (1970): Specification for Coarse and Fine Aggregates from natural sources for concrete (Second revision), Bureau of Indian standard Institution, New Delhi.
IS: 456 – (2000): Specifications for plain and reinforced concrete, Bureau of Indian standards, New Delhi.
IS: 516 - (1959): Indian Standard Methods of tests for strength of concrete, Bureau of Indian Standards, New Delhi.
Rathod, S. M. and Sinha, M., Effect of fly ash and GGBS on strength and durability of concrete up to 90 days, Int. J. Eng. Dev. and Res., 8(1), 71-74 (2020).