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Formation of Ettringite Immediately After Gaging of a Portland Cement
Author(s) -
SCHWIETE HANS ERNST,
NIËL EGID M. G.
Publication year - 1965
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.1151-2916.1965.tb11783.x
Subject(s) - ettringite , portland cement , sulfate , cement , scanning electron microscope , materials science , gypsum , phase (matter) , mineralogy , chemical engineering , chemistry , composite material , metallurgy , organic chemistry , engineering
The formation of ettringite during the initial stages of hydration in commercial portland cement was determined by electron microscopy (diffraction and replica techniques) and by infrared spectrography. The initially formed ettringite is stabilized by a high So d 2‐ concentration in the liquid phase of the cement paste. Hemihydrate and potassium carbonate acted as stabilizers while providing a high sulfate concentration in the liquid phase.