Single Crystals of Calcium Silicate and Aluminate Hydrates and Their Aggregations in Autoclaved Cement Paste

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Title: Single Crystals of Calcium Silicate and Aluminate Hydrates and Their Aggregations in Autoclaved Cement Paste

Author(s): Y. M. Butt, V. V. Timashev, and V. S. Bakshutov

Publication: Special Publication

Volume: 32

Issue:

Appears on pages(s): 149-160

Keywords: alkalies; autoclaving; calcium aluminate hydrates; calcium ferrite hydrates; calcium silicate hydrates; cement pastes; chemical analysis; crystallization; hardening; hydration;

Date: 7/1/1972

Abstract:
The phase compositions and crystal forms of calcium silicate hydrates and calcium aluminate hydrates formed during autoclaving are dependent on temperature, pressure, stoichiometric relationships, and the concentration of Ca2+, Na+, K+, and li+ ions in solution. Most crystals and crystal aggregations are of a characteristic type. Some crystal intergrowth occurs, mainly interpenetration and agglomeration. Illustrations are shown.