Highly Reactive β‐Dicalcium Silicate: III, Hydration Behavior at 40–80°C
作者:
Hideki Ishida,
Kaori Sasaki,
Yoshihiko Okada,
Takeshi Mitsuda,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 9
页码: 2541-2546
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb05609.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The effect of curing temperature (40°, 60°, 80°C) on the hydration behavior of β‐dicalcium silicate (β‐C2S) was investigated. The β‐C2S was obtained by decomposition of hillebrandite, Ca2(SiO3)(OH)2, at 600°C, has a specific surface area of about 7 m2/g, and is in the form of fibrous crystals. The dependence of the hydration reaction on temperature continues until the reaction is completed. The hydration is completed in 1 day at 80°C and in 14 days at 14°C. The hydration mechanism is different above and below 60°C, but at a given temperature, the reaction mechanism and the silicate anion structures of C‐S‐H do not change significantly from the initial to the late stages of the reaction. High curing temperature and long curing times after completion of reaction promote silicate polymerization. The Ca/Si ratio of C‐S‐H shows high values, being almost 2.0 above 6
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