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Early Hydration of Tetracalcium Aluminoferrite in Gypsum and Lime‐Gypsum Solutions
Author(s) -
BROWN PAUL WENCIL
Publication year - 1987
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.1151-2916.1987.tb05682.x
Subject(s) - gypsum , lime , chemistry , aqueous solution , chemical engineering , phase (matter) , mineralogy , calcium , amorphous solid , inorganic chemistry , materials science , metallurgy , organic chemistry , engineering
Based on product compositions and on the compositional changes occurring in the aqueous phase, a mechanism for the early hydration of C 4 AF in solutions containing gypsum or lime and gypsum is suggested. According to this mechanism, early formation of AFt is preceded by the formation of alumina gel or C 2 AH 8 . Early AFt formation occurs through solution, and the early AFt product contains little or no iron. The solution chemistry also suggests that an amorphous, iron‐rich gel forms and that calcium is associated with this gel.