Mechanism of dehydration of calcium suphate dihydrate : application of the helium pyknometric technique

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TypeArticle
Journal titleJournal of the Chemical Society Faraday Transactions
ISSN0300-9599
Volume79
Pages20712075; # of pages: 5
Subjectcalcium; sulphate; dehydration; helium; helium diffusion technique; beta-hemihydrate dehydration; Concrete
AbstractA technique involving helium diffusion has been applied to a study of the dehydration of CaSO[4].2H[2]O in vacuo. New evidence supports arguments that removal of water from the beta-hemihydrate is `zeolite-like' and that small amounts of tightly held water block entrances to microspace in the beta- hemihydrate structure. An appraisal is given of density measurements and changes due to dehydration processes.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1154
NRC number22855
3331
NPARC number20375561
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Record identifier1c5475b5-c5f8-426f-ab19-1ed1f2eac695
Record created2012-07-23
Record modified2016-05-09
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