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Influence of Tricalcium Aluminate on the Hydration of Calcium Silicates
Author(s) -
YOUNG J. F.
Publication year - 1969
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.1151-2916.1969.tb12658.x
Subject(s) - alite , aluminate , calcium , chemical engineering , chemistry , mineralogy , calcium silicate , materials science , metallurgy , cement , clinker (cement) , portland cement , engineering
The behavior of tricalcium silicate and related alites toward a lignosulfonate retarder (LSA) when tricalcium aluminate (C 3 A) is added was studied by X‐ray diffraction and by thermal analysis. In the absence of C 3 A the hydration of the silicates is retarded indefinitely by LSA at the dosage used in this study. The retarding action of LSA was counteracted by the addition of 5% C 3 A, apparently through preferential adsorption of the additive onto C 3 A. Any calcium aluminate hydrates formed were detected by DTA. Their formation during the hydration of an alite of Jeffery's formulation confirmed that it does contain C 3 A.