Sulfate Resistance of Clay-Portland Cement and Clay High-Calcium Fly Ash Geopolymer

作者: Patimapon Sukmak , Pre De Silva , Suksun Horpibulsuk , Prinya Chindaprasirt

DOI: 10.1061/(ASCE)MT.1943-5533.0001112

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摘要: AbstractThis paper examines the short-term resistance ability of two different cementitious systems prepared using silty clay as a major component against 5 wt% sodium sulfate and magnesium solutions. The are clay–portland cement clay-high calcium fly ash (FA) geopolymer. 28-day strength clay-FA geopolymer is up to 1.2 times higher than that clay-cement. results show physical performance when exposed solution better While phase prominent in system, gypsum, ettringite phases present both especially clay-cement system. reduction with duration exposure caused by formation crystallization gypsum (observed scanning electron microscope X-ray diffraction) well decalcification CSH phases. There no change microstructu...

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