2017
DOI: 10.1016/j.conbuildmat.2017.06.078
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Strength development properties of geopolymer paste and mortar with respect to amorphous Si/Al ratio of fly ash

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Cited by 67 publications
(39 citation statements)
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“…In general, a well-defined elastic regime is noted for all samples, although the failure yielding is not well-defined. There is higher early strength development with increase in fly ash content and/or The quartz and mullite, which were present in the raw fly ash, do not appear to lose much of their peak intensities upon activation of the aluminosilicates, which has also been reported in previous studies using pure or virgin products and red mud/coal gangue based geopolymers [25,40]. Mullite, an aluminosilicate mineral, is predominantly unreactive in alkaline medium as seen in FA8, the specimen with the highest fly ash content, by its visible peak at 26.2 • .…”
Section: Parametric Influences On Mechanical Propertiessupporting
confidence: 76%
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“…In general, a well-defined elastic regime is noted for all samples, although the failure yielding is not well-defined. There is higher early strength development with increase in fly ash content and/or The quartz and mullite, which were present in the raw fly ash, do not appear to lose much of their peak intensities upon activation of the aluminosilicates, which has also been reported in previous studies using pure or virgin products and red mud/coal gangue based geopolymers [25,40]. Mullite, an aluminosilicate mineral, is predominantly unreactive in alkaline medium as seen in FA8, the specimen with the highest fly ash content, by its visible peak at 26.2 • .…”
Section: Parametric Influences On Mechanical Propertiessupporting
confidence: 76%
“…For 28 days' strength, straight line fits with positive and negative slopes are obtained for Si/Al and Na/Al plots, respectively. However, further curing may have different patterns of strength as in the case of pure geopolymers where a gradual rise in Si/Al and a sudden subsequent fall has been reported [40]. The trends of the variation of Young's modulus with Si/Al and Na/Al ratios are similar to those of UCS.…”
Section: Parametric Influences On Mechanical Propertiessupporting
confidence: 56%
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“…Patterns of geopolymers show similar sharp peaks from raw precursors. A broad amorphous hump is observed in GP and SGP mixes; however, there is a slight shift in the range This suggests that the mechanisms of geopolymerization of mixes have considerable differences [55]. An average profile is provided by the inbuilt software, which helps in the identification of hump.…”
Section: Morphology and Reaction Mechanism Analysismentioning
confidence: 99%