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Stream/Area:
-
Subject:
-
Paper ID:
IJSREM40454
Volume:
9 |
1 |
Jan 2025
Pages:
1-5
Publication Frequency:
Monthly (12 issues per year)
License:International Journal of Scientific Research in Engineering and Management follows the Creative Commons Attribution 4.0 (CC BY 4.0) License, allowing free use and distribution with proper attribution.
Civil Engineering
Ballari Institute of Technology & Management
Civil Engineering
Ballari Institute of Technology & Management
Civil Engineering
Ballari Institute of Technology & Management
Civil Engineering
Ballari Institute of Technology & Management
This study examines the effective utilisation of ground granulated blast furnace slag (GGBS) in the development of sustainable fly-ash-based geopolymer concrete (GPC). GGBS was used to replace fly ash by mass at 0%, 5%, 10%, 15% and 20%, and the resulting mixes were evaluated for workability and mechanical performance, including compressive strength, split tensile strength and flexural strength. Sodium hydroxide and sodium silicate solutions served as the alkaline activators, and specimens were cured under ambient conditions. The results show that the geopolymer concrete activated with a 10 M sodium hydroxide solution achieved the highest strength among the mixes tested, and that mechanical performance improved as the proportion of GGBS increased. The findings confirm that industrial by-products such as fly ash and GGBS can be combined to produce a mechanically sound and more sustainable alternative to ordinary Portland cement concrete.
KEYWORDS
• An optimum binder combination for cement replacement was identified in terms of the fly ash-GGBS ratio, sodium hydroxide-to-sodium silicate ratio and aggregate-to-binder ratio. • XRD analysis of both fly ash and GGBS confirmed quartz (a member of the silica group) as the major crystalline phase in both precursor materials. • Compressive, split tensile and flexural strength of the geopolymer concrete increased as the proportion of GGBS increased relative to fly ash, up to the 20% replacement level examined. • The strength and microstructural data generated in this study can support the design and development of geopolymer concrete with improved mechanical performance. • Utilising industrial by-products such as fly ash and GGBS in geopolymer concrete can help reduce the environmental burden associated with their disposal.
[1] G. Mallikarjuna Rao and T. D. Gunneswara Rao, “A quantitative method of approach in designing the mix proportions of fly ash and GGBS-based geopolymer concrete,” Aust. J. Civ. Eng., vol. 16, pp. 53-63, 2018. [2] R. R. Bellum, K. Muniraj, and S. R. C. Madduru, “Exploration of mechanical and durability characteristics of fly ash-GGBFS based green geopolymer concrete,” SN Appl. Sci., vol. 2, 2020. [3] R. R. Bellum, M. Al Khazaleh, R. K. Pilla, S. Choudhary, and C. Venkatesh, “Effect of slag on strength, durability and microstructural characteristics of fly ash-based geopolymer concrete,” J. Build. Pathol. Rehabil., vol. 7, 2022. [4] Parveen, D. Singhal, M. T. Junaid, B. B. Jindal, and A. Mehta, “Mechanical and microstructural properties of fly ash based geopolymer concrete incorporating alccofine at ambient curing,” Constr. Build. Mater., vol. 180, pp. 298-307, 2018. [5] G. S. Ryu, Y. B. Lee, K. T. Koh, and Y. S. Chung, “The mechanical properties of fly ash-based geopolymer concrete with alkaline activators,” Constr. Build. Mater., vol. 47, pp. 409-418, 2013.
Publication Date
1/27/2025
Peer Review Type
Double-Blind Peer Review
Review Rounds: 2
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Conflict of Interest
The authors declare no conflict of interest related to this research work.
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