• Ettringite - Wikipedia

    en.wikipedia.org/wiki/Ettringite Ettringite is a hydrous calcium aluminium sulfate mineral with formula: Ca 6 Al 2 (SO 4) 3 (OH) 12 ·26H 2 O. It is a colorless to yellow mineral crystallizing in the trigonal system. The prismatic crystals are typically colorless, turning white on partial dehydration.
  • Ettringite | Definition of Ettringite by Merriam-Webster

    www.merriam-webster.com/dictionary/ettringite Ettringite definition is - a mineral Ca6Al2(SO4)3(OH)12.26H2O consisting of hydrous basic sulfate of calcium and aluminum.
  • What is Ettringite? - Definition from Corrosionpedia

    www.corrosionpedia.com/definition/473/ettringite Ettringite is also known as c ement bacillus, which is the name of a naturally occurring mineral of the same composition and structure. The formation of ettringite or cement bacillus has been recognized as the cause of excessive expansion, cracking and even complete disintegration of concrete subjected to intensive sulfate attack.
  • Ettringite: Mineral information, data and localities.

    www.mindat.org/min-1414.html 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 was identified, characterised by a gap in the a-dimension of the solid-solution phases (Barnett et al., 2000).Further work showed a miscibility gap in the solid solution (Barnett et al., 2003): ettringite ...
  • Ettringite - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/engineering/ettringite 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 encountered in air voids of hardened concretes, regardless of the type of cement used. This secondary ettringite, evidently developed in the walls of the ...
  • Ettringite | Al2Ca6H12O24S3 - PubChem

    pubchem.ncbi.nlm.nih.gov/compound/Ettringite Ettringite | Al2Ca6H12O24S3 | CID 129628151 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities ...
  • ETTRINGITE - engr.psu.edu

    www.engr.psu.edu/ce/courses/ce584/concrete/library/cracking/.../ETTRINGITE.htm Ettringite is a long, large crystal that is only stable in a sulfate saturated environment. The formation of ettringite eventually uses up all the sulfate in the environment causing it to form into three monosulfate crystals. The three monosulfates usually do not form into anything else.
  • Ettringite Formation and the Performance of Concrete

    www.cement.org/.../is417-ettringite-formation-and-the-performance-of-concrete... ettringite could reduce the protection the air void system affords against freeze-thaw damage (see discussion of freeze-thaw resistance below). Ettringite formed by dissolution and recrystallization in void spaces and cracks is often referred to as “secondary ettringite.” Secondary ettringite is not detrimental to concrete performance.
  • Delayed ettringite formation (DEF)

    www.concrete.org.uk/fingertips-nuggets.asp Delayed ettringite formation (DEF) Delayed ettringite formation (DEF) is expansion and cracking of concrete associated with the delayed formation of the mineral ettringite which is a normal product of early cement hydration. DEF is a result of high early temperatures (above 70 o C – 80 o C) in the concrete which prevents the normal formation of ettringite.
  • Ettringite Mineral Data

    webmineral.com/data/Ettringite.shtml Visit our Advertisers for Ettringite : A Bijoux Google Search for Ettringite Dakota Matrix Minerals Google Search for Ettringite John Betts Fine Minerals Search for Ettringite McDougall Minerals Google Search for Ettringite Rock and Mineral Shows Google Search for Ettringite Weinrich Minerals, Inc. Google Search for Ettringite. Ask about ...