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- W3102011246 endingPage "121486" @default.
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- W3102011246 abstract "• FA-MK blend geopolymer has excellent compressive strength compared to single precursor geopolymer. • Optimal room-temperature-cured blend geopolymer was produced with 10 M NaOH solution, S/L of 1.2, and Na₂SiO 2 /NaOH of 2.6. • Addition of merely 1 wt% of MAP and ATP enhanced the compressive strength of geopolymer. • The addition of ATP and MAP improved the cross-linking framework of the geopolymer. This paper details the influence of NaOH concentration, solid-to-liquid (S/L) and sodium silicate-to-sodium hydroxide (Na₂SiO 3 /NaOH) ratios, and the role of aluminum phosphate on the compressive strength development of the fly ash-metakaolin (FA-MK) blend geopolymer. The blended geopolymer was prepared with FA: MK at a ratio of 1:1, activated with a sodium-based alkali activator and then cured at room temperature. The optimum FA-MK blend geopolymer was formulated using a 10 M NaOH solution, a S/L ratio of 1.2, and a Na₂SiO 3 /NaOH ratio of 2.6. Monoaluminium phosphate (MAP) and aluminum dihydrogen triphosphate (ATP) were added as the source of aluminium phosphate. The FA-MK blend geopolymers have compressive strengths of 63.7 MPa and 55.5 MPa after being cured for 28 days with the addition of 1 wt% of MAP and ATP, respectively. The strength enhancement was assumed to be dictated by the formation of a matrix with a higher cross-linking geopolymer framework. The microstructure of blend geopolymer with MAP and ATP was smoother and compact compared to those without phosphate addition. In comparison, MAP addition in blend geopolymer yielded better physical and mechanical properties." @default.
- W3102011246 created "2020-11-23" @default.
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- W3102011246 date "2021-02-01" @default.
- W3102011246 modified "2023-09-24" @default.
- W3102011246 title "Effect of phosphate addition on room-temperature-cured fly ash-metakaolin blend geopolymers" @default.
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- W3102011246 doi "https://doi.org/10.1016/j.conbuildmat.2020.121486" @default.
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