par De Keyser, W.L. 
Référence Bulletin des Sociétés chimiques belges, 63, 1-2, page (40-58)
Publication Publié, 1954
Référence Bulletin des Sociétés chimiques belges, 63, 1-2, page (40-58)
Publication Publié, 1954
Article révisé par les pairs
| Résumé : | Our earlier work on reactions in the solid state of the systems Al2O3, SiO2 and Al2O3 CaO (Bull. Soc. Chim. Belges 1951 n° 60; 1953 n° 62), has enabled us to study the thermal behaviour of the ternary system Al2O3, SiO2, CaO, by the same methods. The samples were prepared by mixing pure oxides, and by mixing Kaolinite and CaO; the composition being in the same field as that of Portland Cement. After heating the samples to temperatures ranging from 1000° to 1400°, and X‐ray examination, the following conclusions were reached. 1) From 1200 ‐ 1300° the reactions are controlled only by the diffusion of the oxides. For mixtures prepared from pure oxides, the reactions are those established for the binary mixtures. For the Kaolin‐lime mixtures, gehlenite is formed from 900° – 1000° instead of AC, then A3C5 is formed. The direction and the succession of these reactions does not depend on the concentration of the constituents in the mixtures. 2) Beyond 1300° the reactions tend towards equilibrium, as is shown on the phase diagram. Copyright © 1954 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim |
