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Title: Electron microscopic and {sup 29}Si nuclear magnetic resonance spectroscopic studies of chromium doped tricalcium silicate

Abstract

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.

Authors:
;  [1];  [2]
  1. Univ. of Alberta, Edmonton (Canada). Dept. of Mining, Metallurgical and Petroleum Engineering
  2. CANMET Western Research Centre, Devon, Alberta (Canada)
Publication Date:
OSTI Identifier:
72828
Report Number(s):
CONF-950201-
ISBN 0-87339-287-6; TRN: IM9530%%320
Resource Type:
Conference
Resource Relation:
Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Las Vegas, NV (United States), 12-16 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Treatment and minimization of heavy metal-containing wastes 1995; Hager, J.P.; Mishra, B. [eds.] [Colorado School of Mines, Golden, CO (United States)]; Davidson, C.F. [ed.] [Bureau of Mines, Salt Lake City, UT (United States)]; Litz, J.L. [ed.] [IC Technologies, Wheat Ridge, CO (United States)]; PB: 272 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; CALCIUM SILICATES; MICROSTRUCTURE; PORTLAND CEMENT; CHROMIUM; SOLIDIFICATION; ELECTRON MICROSCOPY; NMR SPECTRA; SILICON 29; TRACER TECHNIQUES; HAZARDOUS MATERIALS; DOPED MATERIALS; WASTE FORMS

Citation Formats

Omotoso, O E, Ivey, D G, and Mikula, R. Electron microscopic and {sup 29}Si nuclear magnetic resonance spectroscopic studies of chromium doped tricalcium silicate. United States: N. p., 1995. Web.
Omotoso, O E, Ivey, D G, & Mikula, R. Electron microscopic and {sup 29}Si nuclear magnetic resonance spectroscopic studies of chromium doped tricalcium silicate. United States.
Omotoso, O E, Ivey, D G, and Mikula, R. Sat . "Electron microscopic and {sup 29}Si nuclear magnetic resonance spectroscopic studies of chromium doped tricalcium silicate". United States.
@article{osti_72828,
title = {Electron microscopic and {sup 29}Si nuclear magnetic resonance spectroscopic studies of chromium doped tricalcium silicate},
author = {Omotoso, O E and Ivey, D G and Mikula, R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {7}
}

Conference:
Other availability
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