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The potential of oil shale ash wastes as a source material for geopolymeric or alkali activated construction materials was assessed using structural, XRD, SEM, SEM-EDX, ATR-FTIR and 29Si MAS-NMR methods. Fresh, unhydrated furnace bottom and cyclone separator ash along ash plateau sediment were used in combination with 5M NaOH and Na2SiO3 solutions with SiO2/Na2O ratios of 2.72 and 1.5 as alkaline...
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