Comparison studies between cement and cement-kaolinite properties for incorporation of low-level radioactive wastes
- Atomic Energy Authority, Cairo (Egypt). Hot Lab. and Waste Management Center
Comparison between the properties of cement and cement mixed with 7.5% kaolinite was performed to choose the most suitable matrix to incorporate radioactive wastes. The cement-kaolinite mixtures were prepared as uncured, cured, and heated specimens. The physical properties of the cement-kaolinite mixture, namely density, porosity, and water absorption percent, were determined. Compressive strength, infrared spectra, thermal analysis, and the effect of gamma rays on the samples were studied. The studies were extended to the cement-kaolinite mixture in the presence of some chemical additives at different concentrations. Leachability of radioactive isotopes from the cement-kaolinite mixture was measured as a function of time. The physical and mechanical properties of cement were decreased in the presence of 7.5% kaolinite, whereas {sup 137}Cs and {sup 60}Co were less leached from the cement-kaolinite mixture.
- OSTI ID:
- 597050
- Journal Information:
- Cement and Concrete Research, Vol. 27, Issue 12; Other Information: PBD: Dec 1997
- Country of Publication:
- United States
- Language:
- English
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