Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm
The effect of multiple mix design factors on the properties of ladle slag-fly ash alkali-activated composites was investigated. Taguchi-TOPSIS hybrid algorithm was adopted to optimize mix design parameters, including ladle slag replacement by fly ash (LSR), sodium hydroxide molarity (SHM), the ratio...
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Elsevier
2024-12-01
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| Series: | Cleaner Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666790824001162 |
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| author | Omar Najm Hilal El-Hassan Amr El-Dieb |
| author_facet | Omar Najm Hilal El-Hassan Amr El-Dieb |
| author_sort | Omar Najm |
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| description | The effect of multiple mix design factors on the properties of ladle slag-fly ash alkali-activated composites was investigated. Taguchi-TOPSIS hybrid algorithm was adopted to optimize mix design parameters, including ladle slag replacement by fly ash (LSR), sodium hydroxide molarity (SHM), the ratio of sodium silicate to sodium hydroxide (NS/NH), the ratio of alkaline activator solution to binder (AAS/B), and crushed stone replacement by desert dune sand (CSR). The results revealed that the mix proportions of the optimum strength response comprised LSR, AAS/B, SHM, NS/NH, and CSR of 10%, 0.5, 8 M, 2, and 75%, respectively, with a compressive strength of 21 MPa. Conversely, the mixture proportions for superior fresh properties had a flow of 240 mm and entailed LSR, AAS/B, SHM, NS/NH, and CSR of 40%, 0.5, 8 M, 2.5, and 75%, respectively. Additionally, the hybrid method prediction model proved to be robust, with the ability to predict strength and workability at 93 and 100% accuracy. The optimum mixes comprised an intermix of calcium aluminosilicate hydrate and sodium aluminosilicate hydrate gels, with traces of calcium silicate hydrate gel, as identified by microstructure analysis and using ternary diagram system of Ca/Si-Na/Si-Al/Si ratios. |
| format | Article |
| id | doaj-art-69d3c2f1aaf4462196864f7eb1294ea2 |
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| issn | 2666-7908 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| spelling | doaj-art-69d3c2f1aaf4462196864f7eb1294ea22025-08-20T02:34:44ZengElsevierCleaner Engineering and Technology2666-79082024-12-012310083610.1016/j.clet.2024.100836Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithmOmar Najm0Hilal El-Hassan1Amr El-Dieb2Department of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, United Arab Emirates; Civil Engineering Program, College of Engineering, Al-Ain University, Abu Dhabi, United Arab EmiratesDepartment of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, United Arab Emirates; Emirates Center for Mobility Research, Al Ain, United Arab Emirates; Corresponding author. Department of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, United Arab Emirates.Department of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, United Arab EmiratesThe effect of multiple mix design factors on the properties of ladle slag-fly ash alkali-activated composites was investigated. Taguchi-TOPSIS hybrid algorithm was adopted to optimize mix design parameters, including ladle slag replacement by fly ash (LSR), sodium hydroxide molarity (SHM), the ratio of sodium silicate to sodium hydroxide (NS/NH), the ratio of alkaline activator solution to binder (AAS/B), and crushed stone replacement by desert dune sand (CSR). The results revealed that the mix proportions of the optimum strength response comprised LSR, AAS/B, SHM, NS/NH, and CSR of 10%, 0.5, 8 M, 2, and 75%, respectively, with a compressive strength of 21 MPa. Conversely, the mixture proportions for superior fresh properties had a flow of 240 mm and entailed LSR, AAS/B, SHM, NS/NH, and CSR of 40%, 0.5, 8 M, 2.5, and 75%, respectively. Additionally, the hybrid method prediction model proved to be robust, with the ability to predict strength and workability at 93 and 100% accuracy. The optimum mixes comprised an intermix of calcium aluminosilicate hydrate and sodium aluminosilicate hydrate gels, with traces of calcium silicate hydrate gel, as identified by microstructure analysis and using ternary diagram system of Ca/Si-Na/Si-Al/Si ratios.http://www.sciencedirect.com/science/article/pii/S2666790824001162Ladle slagFly ashTaguchi methodPerformanceMicrostructure |
| spellingShingle | Omar Najm Hilal El-Hassan Amr El-Dieb Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm Cleaner Engineering and Technology Ladle slag Fly ash Taguchi method Performance Microstructure |
| title | Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm |
| title_full | Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm |
| title_fullStr | Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm |
| title_full_unstemmed | Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm |
| title_short | Optimization of alkali-activated ladle slag-fly ash composites using a Taguchi-TOPSIS hybrid algorithm |
| title_sort | optimization of alkali activated ladle slag fly ash composites using a taguchi topsis hybrid algorithm |
| topic | Ladle slag Fly ash Taguchi method Performance Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2666790824001162 |
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