In concrete chemistry, ettringite is a hexacalcium aluminate trisulfate hydrate, of general formula when noted as oxides: 6CaO·Al 2 O 3 ·3SO 3 ·32H 2 O. or 3CaO·Al 2 O 3 ·3CaSO 4 ·32H 2 …

Ettringite is a primary constituent of hydration of Portland cement concrete. Its formation plays an important role in the control of setting. Minor amounts of secondary ettringite are often …

Ettringite Group. Although it is generally assumed that a solid solution series between ettringite and thaumasite exists, both species have different space groups and a possible discontinuity …

Ettringite: Moore A E, Taylor H F W (1970) Crystal structure of ettringite Acta Crystallographica B26 386-393: 1970: Scawt Hill, Northern Ireland: 0: 293: 0012178: Ettringite: Hartman M R, …

Ettringite is a mineral with formula of Ca 6 Al 2 (S 6+ O 4) 3 (OH) 12 ·27H 2 O or Ca 6 Al 2 (SO 4) 3 (OH) 12 ·27H 2 O. The corresponding IMA (International Mineralogical Association) number …

Ettringite. Comments: Doubly-terminated crystals of glassy yellow ettringite on matrix. Location: N'Chwaning Mine, near Kuruman, South Africa. Scale: Crystal size 4 cm. © Rob Lavinsky

Ettringite, Ca6Al2(SO4)3(OH)12.26H2O, or C6A¯S3H32 as it is known in cement chemistry notation, is a major phase of interest in cement science as a hydration product and in polluted …

Delayed ettringite formation (DEF) is a rare but potentially severe form of internal sulfate attack of concrete (Quillin, 2001). A certain amount of ettringite (hydrous calcium sulfoaluminate) forms …

Ettringite is a hydrous calcium aluminum sulfate mineral first described in 1874 from Ettringer Bellerberg, Ettringen, Mayen, Eifel, Rheinland-Pfalz, Germany. The mineral was named for its …

Spray of ettringite prisms on "antozonite" ("Stinkspat"). The ettringite was identified by EDS-analyses which revealed also trace amounts of Cu, Si and As. At very high magnifications the …