Helium flow and density measurement of the hydrated tricalcium silicate-water system

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DOIResolve DOI: http://doi.org/10.1016/0008-8846(72)90028-2
AuthorSearch for:
TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume2
IssueJanuary 1
Pages123136; # of pages: 14
Subjecthydrated cement; helium; density (physics); porosity; relative humidity; Concrete; ciment hydrate; helium; masse volumique; porosite; humidite relative
AbstractMeasurements were made on samples initially conditioned at 11% R.H. and dried in stages to the d-dry condition. Helium flow measurements, although less quantitatively, are qualitatively similar to those found for hydrated portland cement. It was concluded that the narrow spaces into which helium flowed are interlayer spaces, not fixed-dimension narrow-necked pores. In the measurement of density it was shown that if aqueous solution is used on d-dried samples, account will have to be made for the fact that re-entrance of interlayer water occurs. However, if the material is dried only to 11% R.H. density can be measured by helium, methanol or aqueous Ca(OH)[2] solution. The value varies only from 2.35 to 2.37 gm/cc for the hydrated C[3]S.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-RP-504
NRC number12326
3299
NPARC number20375524
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Record identifier6e7c465d-6e8a-40de-bcba-15f15825a546
Record created2012-07-23
Record modified2016-05-09
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