Abstract:The infrequent setting behavior and hydration process of a Portland cement with very low alkali content were concerned. Gypsum and K 2 SO 4 with different quantities and ratios were added into cement to adjust its sulfate and alkali content. The setting time and compressive strength of cements were tested, the hydration process and hydrates of cements were investigated by isothermal calorimetry, non-evaporable water content and XRD. The results show that gypsum addition is incapable of delaying the quick initi… Show more
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