Premium
Hydration of Tricalcium Germanate–Tricalcium Silicate Solid Solutions
Author(s) -
Sample David,
Brown Paul W.
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04388.x
Subject(s) - hydrate , calcium silicate hydrate , germanate , isothermal process , silicate , calcium silicate , mineralogy , solid solution , chemistry , calorimetry , calcium , materials science , composition (language) , chemical engineering , cement , thermodynamics , metallurgy , ion , composite material , organic chemistry , linguistics , physics , philosophy , engineering
The hydration characteristics of solid solutions of composition 3CaO· x GeO 2 ·(1 − x )SiO 2 were investigated at 25°C by isothermal calorimetry. The compositions hydrated were for x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0. Full hydration was achieved for compositions in which x < 0.2. Both the rate of hydration and the total heat evolved for complete hydration vary with composition. Hydrate compositions were determined, and these also show a compositional dependence. The hydration product for tricalcium germanate has a Ca/Ge ratio near 1.5. Although the hydration products of the solid solution are far more fibrous, their morphologies are reminiscent of that of calcium silicate hydrate.