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Conversion of CaO·Al 2 O 3 ·10H 2 O to 3CaO·Al 2 O 3 ·6H 2 O
Author(s) -
MEHTA P. K.,
LESNIKOFF GEORGE
Publication year - 1971
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.1151-2916.1971.tb12268.x
Subject(s) - aluminate , scanning electron microscope , materials science , mineralogy , crystallography , x ray crystallography , hexagonal crystal system , phase (matter) , analytical chemistry (journal) , diffraction , cement , chemistry , metallurgy , composite material , optics , physics , organic chemistry , chromatography
The morphological changes accompanying the conversion of the hexagonal CaO·Al 2 O 3 ·10H 2 O phase to the cubic 3CaO·Al 2 O 3 ·6H 2 O phase were studied by scanning electron microscopy. The hydration and conversion reactions were monitored by X‐ray diffraction analysis. From the micrographs, it was inferred that changes in the pore structure and the presence of large cubic crystals of questionable adhesive value were probably the principal factors responsible for the loss of strength in converted calcium aluminate cement pastes.