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ettringite

   Also found in: Wikipedia 0.01 sec.
ettringite [′e·triŋ‚īt]
(mineralogy)
Ca6Al2(SO4)3(OH)12·26H2O A mineral composed of hydrous basic calcium and aluminum sulfate.
ettringite
A mineral, high in sulfate calcium sulfoaluminate; occurs naturally or is formed by sulfate attack on mortar and concrete; designated as a cement bacillus in older literature.
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It is known that cement concrete collapses in acid because of ettringite produced in a reaction between calcium aluminate of cement and sulfate of acid.
Weathering properties of elastic rubber concrete comprising waste ... by Chung, Kyung-Ho; Hong, Young-Keun / Polymer Engineering and Science
As water is introduced to cement to make a paste, which hardens over time, the main microstructural phases in the hydrated cement paste are: (1) calcium silicate hydrate gel, C-S-H; (2) calcium hydroxide, CH; (3) ettringite (a sulfoaluminate hydrate); (4) monosulfate; (5) unhydrated cement particles; and (6) air voids.
News on nanotechnology: recent nanoscience research improves ... by Shah, Surendra P.; Mondal, Paramita; Ferron, Raissa P.; Tregger, Nathan; Sun, Zhihui / Public Roads
This can apply to the oil shale semicoke samples in which the formation of ettringite has also occurred [12].
Leaching behaviour of oil shale semicoke: compliance with the waste ... by Orupold, K.; Habicht, J.; Tenno, T. / Oil Shale
 
 
 
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