Author(s): F.H. Mosalamy, S.A.S. El-Hemaly, M.G. Abd El Wahed and H. El-Didamony
Article publication date: 1985-03-01
Vol. 3 No. 1 (yearly), pp. 133-142.
144
Keywords
hydration, calcium hydroxide, calcium sulphate
Abstract
This study deals with the hydration kinetics of tricalcium aluminate in the presence of one mole CaO in excess than the stoichiometric composition of ettringite as well as of monosulphate hydrate. It is not yet known whether or not the calcium hydroxide controls the formation of ettringite during the hydration of commercial portland cement. Two mixes from C3A, CaO and CaSO4 were prepared having the molar ratios of 1:1:3 and 1:1:1 respectively. The hydration products as well as the hydration kinetics were studied using the X-ray diffractometry and differential thermogravimetry techniques