...J.F. Stebbins; J.V. Oglesby; S. Kroeker Abstract We present 17 O MAS NMR data for crystalline calcium dialuminate (grossite), CaAl 4 O 7 and monoaluminate, CaAl 2 O 4 . The first of these contains an oxygen tricluster site and serves as a model compound for sites of this type in aluminosilicate...

... H 2 O and the f O 2 of the furnace atmosphere. For conditions in air of ordinary humidity, the following five compounds have been found: Tricalcium aluminate (Ca 3 Al 2 O 6 ), Ca 12 Al 14 O 33 , monocalcium aluminate (CaAl 2 O 4 ), calcium dialuminate (CaAl 2 O 7 ) and calcium hexaluminate...

... planetary basalts. American Mineralogist , 90 , 277 – 290 . Ponomarev , V.I. , Kheiker , D.M. , and Belov , N.V. ( 1971 ) Crystal structure of calcium dialuminate, CA2. Soviet Physics-Crystallography , 15 , 995 – 998 . Pouchou , J.L. , and Pichoir , F. ( 1985...

..., is quite high—the different hydrates formed are temperature dependent. Ramachandran and Feldmann (1973) studied the hydration of CA at low w/s-ratios. Early hydration of CA is described by Trettin et al. (1987) . The calcium dialuminate is an important component in CACs with increased aluminum...

... of limestone) and 40% from the fuel (most commonly coal). Limestone is the dominating calcium oxide source of Portland cement clinker consisting of about 60% CaO, and hence the cement plants are located near a limestone deposit as limestone constitutes about 80% of the raw meal fed to the rotating kiln...