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Formation of Calcium Hydroxide from Aqueous Suspensions of Tricalcium Silicate
Author(s) -
WU ZHAOQI,
YOUNG J. FRANCIS
Publication year - 1984
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.1151-2916.1984.tb19146.x
Subject(s) - supersaturation , calcium hydroxide , silicate , aqueous solution , calcium , chemistry , solubility , calcium silicate , hydroxide , inorganic chemistry , chemical engineering , mineralogy , organic chemistry , engineering
The release of Ca 2+ and OH” from tricalcium silicate into the aqueous phase was monitored over the first few hours. The solution becomes supersaturated with respect to pure calcium hydroxide with the maximum activity product being about 3.5 times greater than the solubility product. Evidence is presented in support of “silicate poisoning” of calcium hydroxide nuclei. The addition of soluble salts changes the time at which maximum supersaturation is attained but not its magnitude. The analytical data are compared with the rate of heat released from companion pastes.