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29 Si MAS NMR Study of Dicalcium Silicate: The Structural Influence of Sulfate and Alumina Stabilizers
Author(s) -
Bonafous Laurent,
Bessada Catherine,
Massiot Dominique,
Coutures JeanPierre,
Holland Bruno Le,
Colombet Pierre
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08029.x
Subject(s) - silicate , doping , sintering , nmr spectra database , sulfate , calcium silicate , nuclear magnetic resonance spectroscopy , mineralogy , chemistry , spectroscopy , materials science , analytical chemistry (journal) , crystallography , spectral line , stereochemistry , organic chemistry , physics , optoelectronics , quantum mechanics , astronomy , composite material
The effect on β‐C 2 S of two stabilizing agents, calcium sulfate and alumina, has been investigated using high‐resolution 29 Si solid state NMR spectroscopy. Syntheses were achieved via the gel route, wet or dry processes. Room‐temperature NMR spectra characteristics were analyzed as a function of the sintering temperature. The incorporation of Al 3+ and S 6+ ions, which finds expression in a noticeable line broadening, is shown to be effective above 1200°C. The 29 Si chemical shift is unchanged upon doping, suggesting a mean SiO 4 tetrahedra geometry identical to that in pure β‐C 2 S. General trends on the structure adopted by C 2 S upon Al 3+ and S 6+ doping are also discussed.