Abstract
Ordinary Portland Cement (OPC) is often used for the Solidification/Stabilization (S/S) of waste containing heavy metals and salts. These waste componenents will precipitate in the form of insoluble compounds onto unreacted cement clinker grains preventing further hydration. In this study the long term effects of the presence of contaminants in solidified waste is examined by numerically simulating cement hydration after precipitation of metal salts on the surface of cement grains. A cement hydration model was extended in order to describe porewater composition and the effects of coating. Calculations were made and the strength development predicted by the model was found to agree qualitatively with experimental results found in literature. The complete model is useful in predicting the strength and leaching resistance of solidified products and developing solidification recipes based on cement.
| Original language | Undefined |
|---|---|
| Title of host publication | Waste Materials in Construction. Science and Engineering of Recycling for Environmental Protection Proceedings of Waste Materials in Construction WASCON 2000, 31 May-2June. G.R. Woolley, J.J.J.M. Goumans and P.J. Wainwright, eds. WMS Vol. 1, Pergamon |
| Place of Publication | Harrogate, England |
| Pages | 685-694 |
| Number of pages | 10 |
| Publication status | Published - 31 May 2000 |
| Event | WASCON 2000, the 4th International Conference on the Science and Engineering of Recycling for Environmental Protection - Harrogate, UK Duration: 31 May 2000 → 2 Jun 2000 |
Conference
| Conference | WASCON 2000, the 4th International Conference on the Science and Engineering of Recycling for Environmental Protection |
|---|---|
| Period | 31/05/00 → 2/06/00 |
| Other | 31 May - 2 June 2000 |
Keywords
- METIS-125327
- IR-21577
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