Changes to structure of hydrated portland cement on drying and rewetting obserrved by helium flow techniques

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DOIResolve DOI: http://doi.org/10.1016/0008-8846(74)90061-1
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TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume4
IssueJanuary 1
Pages111; # of pages: 11
Subjectportland cement; hydration; helium; wetting; Concrete
AbstractHelium flow techniques are applied to the hydrated portland cement-water system during rewetting. Measurements of solid volume and density demonstrate irreversible changes to the structure. Measurement of changes in volume of interlayer space are made and are shown to be due to new alignment of layers and to the moving apart of layers as a result of water penetration. The density of the interlayer water is found by these techniques to be 1.20 + or - 0.08 gm/ml. Calculation of the parameter Total Volume/Monolayer Volume for the interlayer space yields a value of 1.32. This shows that the space approximates that bounded between two parallel plates.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-RP-580
NRC number13675
3304
NPARC number20375604
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Record identifierf061823b-b2d0-4401-b020-70f714b4194d
Record created2012-07-23
Record modified2016-05-09
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