SI-29 MAS NMR-STUDY OF DICALCIUM SILICATE - THE STRUCTURAL INFLUENCE OF SULFATE AND ALUMINA STABILIZERS

被引:22
作者
BONAFOUS, L [1 ]
BESSADA, C [1 ]
MASSIOT, D [1 ]
COUTURES, JP [1 ]
LEROLLAND, B [1 ]
COLOMBET, P [1 ]
机构
[1] CTR TECH GRP ITALCEMENTI CIMENTS FRANCAIS,F-78931 GUERVILLE,FRANCE
关键词
D O I
10.1111/j.1151-2916.1995.tb08029.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The effect on beta-C2S of two stabilizing agents, calcium sulfate and alumina, has been investigated using high-resolution Si-29 solid state NMR spectroscopy. Syntheses mere achieved via the gel route, wet or dry processes, Room-temperature NMR spectra characteristics mere analyzed as a function of the sintering temperature, The incorporation of Al3+ and S6+ ions, which finds expression in a noticeable line broadening, is shown to be effective above 1200 degrees C. The Si-29 chemical shift is unchanged upon doping, suggesting a mean SiO4 tetrahedra geometry identical to that in pure beta-C2S General trends on the structure adopted by C2S upon Al3+ and S6+ doping are also discussed.
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收藏
页码:2603 / 2608
页数:6
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