Volume change on first drying of hydrated Portland cement with and without admixtures

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DOIResolve DOI: http://doi.org/10.1016/0008-8846(75)90105-2
AuthorSearch for: ; Search for:
TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume5
IssueJanuary 1
Pages2535; # of pages: 11
Subjectconcrete admixtures; portland cement; hydrated cement; shrinkage; relative humidity; Admixtures
AbstractThe effect of admixtures of several types on the volume change characteristics of portland cement pastes is reported. Samples were cut in the form of wafers and dried step by step through several humidities down to 40 per cent; other samples were dried to the d-dried state. Large first drying shrinkages were obtained with extra dosages of calcium lignosulphonate, hydroxy carboxylic acids, and triethanolamine. Below 40 per cent RH all samples showed similar behavior with further drying or rewetting. It is suggested that the effect of admixture is mainly one of degree of dispersion in terms of alignment of sheets and displacement of ends of sheets.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-RP-624
NRC number14409
3306
NPARC number20375875
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Record identifier671cc64b-d4ce-48c1-93c4-b1cc9ad0909b
Record created2012-07-23
Record modified2016-05-09
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