Electron microscopic and {sup 29}Si nuclear magnetic resonance spectroscopic studies of chromium doped tricalcium silicate
- Univ. of Alberta, Edmonton (Canada). Dept. of Mining, Metallurgical and Petroleum Engineering
- CANMET Western Research Centre, Devon, Alberta (Canada)
This study is part of an ongoing investigation to understand the mechanism of stabilization/solidification of hazardous chromium wastes in ordinary Portland cement (OPC). Tricalcium silicate (C{sub 3}S), a major component of OPC is mixed with reagent grade Cr(III) and Cr(VI) solutions, to simulate complex cement/Cr waste systems. Scanning electron microscopy (SEM) and energy disperse spectrometry (EDS) were employed to provide microstructural and chemical information. Transmission electron microscopy (TEM/EDS), apart from complimenting the SEM, was used to probe the distribution of Cr in the hydration products of C{sub 3}S and to provide crystallographic information. {sup 29}Si MAS NMR (magic angle spinning--nuclear magnetic resonance) was used to characterize the influence of Cr on the hydrated silicate structure.
- OSTI ID:
- 72828
- Report Number(s):
- CONF-950201--; ISBN 0-87339-287-6
- Country of Publication:
- United States
- Language:
- English
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