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- Title
水泥基材料中碳硫硅钙石形成的热力学分析.
- Authors
肖佳; 孟庆业; 马保国; 王迎斌
- Abstract
The thermodynamical model of thaumasite formation in cement-based materials was established for the direct route and woodfordite route. Data of the thermodynamical model indicated that thaumasite can be formed between 0°C and 25 °C by direct route while woodfordite, instead of pure thaumasite, can be formed from ettringite, C-S-H, calcite and water at 5 °C, and woodfordite formed more easily than thaumasite by the direct route. Enthalpy change of the direct route of thaumasite formation showed that the direct reaction is an endothermic reaction, and equilibrium constant of the direct reaction decreases as reaction temperature increases. It was also indicated that low temperature is favourable to thaumasite formation.
- Publication
Jianzhu Cailiao Xuebao: Journal of Building Materials, 2015, Vol 18, Issue 2, p263
- ISSN
1007-9629
- Publication type
Article
- DOI
10.3969/j. issn.1007-9629.2015.02.013