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- W2888659315 abstract "Abstract This study compares the mechanical performance of clayey soil stabilization using volcanic ash (VA) based geopolymer and ordinary Portland cement (OPC). The effects of curing conditions and time, alkali activator/clay and alkali activator molarity, and VA/clay ratio are determined. The compressive strength of the untreated clayey soil specimens could be increased from 0.2 to 4 MPa and 2 to 12 MPa at the OC and DC conditions, respectively, when the soil partially replaced by 15 wt% of the binders. It is observed that geopolymer treatment is more efficient at the dry conditions (DC) while the Portland cement is superb at the wet environments (OC). This difference is associated with the role of water and pH in the kinetics of geopolymerization and the Portland cement hydration. Moreover, increasing the molarity of alkali activator and alkali activator/clay improve the compressive strength of the geopolymer treated soil. Besides, the higher energy absorption in all geopolymer specimens shows the superior ductility of this material in comparison with OPC." @default.
- W2888659315 created "2018-08-31" @default.
- W2888659315 creator A5017110336 @default.
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- W2888659315 date "2018-11-01" @default.
- W2888659315 modified "2023-10-10" @default.
- W2888659315 title "Clayey soil stabilization using geopolymer and Portland cement" @default.
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- W2888659315 doi "https://doi.org/10.1016/j.conbuildmat.2018.07.207" @default.
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