Investigation of the CaO-Al2O3-SiO2-H2O system at 25°C by thermodynamic calculations

摘要: High alumina cements may be blended with silica-containing compounds such as blast furnace slags (BFS), fly ashes (FA) or ordinary Portland cement. Thus silica becomes available in these systems and hydrates containing both form. The CaO-Al[sub 2]O[sub 3]-SiO[sub 2]-H[sub 2]O system has been calculated at 25 C using new data on C-S-H hydrogarnets. Thirty seven phase assemblages are found to stable this temperature. Despite the approximations made, described accordance most of experimentally for temperature ranging from 85 C.