95/04709 Pore structures of fly ashes activated by Ca(OH)2 and CaSO4.2H2O
- Publisher
- Elsevier Science
- Year
- 1995
- Weight
- 179 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0140-6701
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π SIMILAR VOLUMES
The influences of Ca(OH)z and CaSO4 β’ 2I-I20 on the hydration of amorphous calcium aluminate with the chemical composition similar to C,zA7 were studied by determining the degree of hydration according to the selective dissolution method. The hydration reaction of amorphous calcium aluminate progre
The reaction between calcium hydroxide and minerals containing alumina forms C~A-hydrates and/or hydrogarnet (calcium-alumina-silicate hydrate), depending on the temperature. Alkali-feldspars furnish alkalies during the reaction. C4A-hydrates react with calcium sulphate to produce ettringite. La
Calculation of the solubility product constants for Ca(OH)2 and CaSO4.2H20 in pore solutions of hardened cement paste is used as an estimation of saturation. The treatment of solubility data using three models is discussed in this paper. These models are the Greenberg-Copeland model[l], the Brornley
The hydration of C3A in the presence of CaSO4"2H20 , CaCO 3 and always Ca(OH)2 in excess has been studied with X-ray diffraction. Using a special technique the diagrams were taken directly from the pastes. From the data obtained conclusions regarding the sequence of reactions and the possible phase