Ca₃Al₂O₆-CaSO₄・2H₂O-CaCrO₄系の水和生成物

抄録

This paper discusses the hydration products in C₃A-CaSO₄.2H₂O-CaCra₄system. The mole ratio of gypsum to C₃A is 2/3 and the replacement mole ratio of CaCrO₄ to gypsum is ranged from 0 to 1.0. CrO_42- is fixed to AFm phase and the basal space of AFm is not changed until the replacement ratio of CaCrO₄ is 0.25. But, the basal space of AFm is increased and the XRD peak of AFm become broad with increasing of the replacement ratio of CaCrO₄. In CrO_42--AFm, the basal space changed from 0.98 into 1.02 nm depending on a synthetic condition and the drying conditions, and the water between layers in AFm in that case was presumed to be 12 and 14 moles.