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

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1016/0008-8846(74)90061-1
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada
FormatText, Article
SubjectConcrete; Portland cement; hydration; helium; wetting
Abstract
Helium 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
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  • Cement and Concrete Research 4, no. January 1 (1 January 1974): 1–11.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-RP-580
NRC numberNRCC 13675
NRC-IRC-3304
NPARC number20375604
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Record identifierf061823b-b2d0-4401-b020-70f714b4194d
Record created2012-07-23
Record modified2024-01-11
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