Effect of some heavy metal salts on the formation of ettringite Год выпуска: 2012Автор: Maha Mohamed,Wafaa Hegazy,Eisa Hekal and Essam kisharИздательство: LAP Lambert Academic PublishingСтраниц: 116ISBN: 9783659108815Описание The effect of the addition of chloride and nitrate salts of Zn, Cu, Pb and Cr on the hydration reaction of a mixture of 3CaO. Al2O3 (C3A) and gypsum with molar ratio 1: 3 was studied. Different ratios of each salt were used namely; 0.5, 2 and 4 % by weight of the solid mixture. Hydration reaction was carried out at 35°C for various time intervals; 1/2 hour, 3, 6 and 24 hours, 3 and 7 days. Hydration kinetics of the system 3CaO. Al2O3 – CaSO4. 2H2O in absence and presence of different salts was studied via the determination of the combined water contents.
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