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Influence of various parameters on strength and absorption properties of fly ash based geopolymer concrete designed by Taguchi method
HighlightsEffect of OPC content on properties of geopolymer concrete.Effect of sodium hydroxide molarity on properties of geopolymer concrete.Effect of curing temperature on properties of geopolymer concrete.SEM, EDS and XRD analysis of geopolymer concrete optimized by Taguchi method.
AbstractThe paper presents the influence of various parameters on compressive strength and water absorption properties of fly ash based geopolymer concrete mixtures optimized by Taguchi method. A total of sixteen mixtures were evaluated considering the effect of inclusion of ordinary Portland cement as fly ash replacement, different molarities of sodium hydroxide solution and different curing temperatures. Analysis of variance was employed to study their influence on compressive strength and water absorption. Also, using multiple regression analysis, mathematical models were developed for both the properties followed by their confirmation test results.Results show that maximum 7days compressive strength of 64.39MPa and minimum water absorption of 3.04% was obtained for fly ash based geopolymer concrete with the considered parameters. The inclusion of additional calcium (in form of OPC as fly ash replacement) was found to influence the compressive strength and water absorption properties most significantly. The best parametric combinations for both the properties were also obtained using Signal-to-Noise ratio graphs. Microstructure properties were also examined using Scanning Electron Microscopy, Energy Dispersive Spectroscopy and X-ray Diffraction analysis which confirmed more compact and less permeable matrix for the optimized mixture.
Influence of various parameters on strength and absorption properties of fly ash based geopolymer concrete designed by Taguchi method
HighlightsEffect of OPC content on properties of geopolymer concrete.Effect of sodium hydroxide molarity on properties of geopolymer concrete.Effect of curing temperature on properties of geopolymer concrete.SEM, EDS and XRD analysis of geopolymer concrete optimized by Taguchi method.
AbstractThe paper presents the influence of various parameters on compressive strength and water absorption properties of fly ash based geopolymer concrete mixtures optimized by Taguchi method. A total of sixteen mixtures were evaluated considering the effect of inclusion of ordinary Portland cement as fly ash replacement, different molarities of sodium hydroxide solution and different curing temperatures. Analysis of variance was employed to study their influence on compressive strength and water absorption. Also, using multiple regression analysis, mathematical models were developed for both the properties followed by their confirmation test results.Results show that maximum 7days compressive strength of 64.39MPa and minimum water absorption of 3.04% was obtained for fly ash based geopolymer concrete with the considered parameters. The inclusion of additional calcium (in form of OPC as fly ash replacement) was found to influence the compressive strength and water absorption properties most significantly. The best parametric combinations for both the properties were also obtained using Signal-to-Noise ratio graphs. Microstructure properties were also examined using Scanning Electron Microscopy, Energy Dispersive Spectroscopy and X-ray Diffraction analysis which confirmed more compact and less permeable matrix for the optimized mixture.
Influence of various parameters on strength and absorption properties of fly ash based geopolymer concrete designed by Taguchi method
Mehta, Ankur (author) / Siddique, Rafat (author) / Singh, Bhanu Pratap (author) / Aggoun, Salima (author) / Łagód, Grzegorz (author) / Barnat-Hunek, Danuta (author)
Construction and Building Materials ; 150 ; 817-824
2017-06-12
8 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
| British Library Online Contents | 2017
Properties of fly ash geopolymer concrete designed by Taguchi method
| Elsevier | 2011
Properties of fly ash geopolymer concrete designed by Taguchi method
| British Library Online Contents | 2012