Characteristics of sorption and expansion isotherms of reactive limestone aggregate

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TypeArticle
Journal titleJournal of the American Concrete Institute
ISSN0002-8061
Volume58
Issue2
Pages203214; # of pages: 12
Subjectconcrete admixtures; limestone; water absorption; expansion; isotherms; Concrete; adjuvant; pierre a chaux; absorption d'eau; dilatation; isotherme
AbstractCharacteristic differences have been detected in the sorption and expansion isotherms of alkali-treated and untreated reactive limestone aggregate; these results are compared with those obtained from Vycor glass under similar conditions. It is concluded that the evidence establishes the presence, within the pores of the aggregate, of trace amounts of a material that causes expansion when water is made available to it and that the mechanism of expansion is similar to the alkali-silica complex formed in the pores of Vycor glass although the composition of the materials in the two cases may be different.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-127
NRC number6449
3356
NPARC number20375114
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Record identifier747da847-b9b9-44ff-9fbc-ebc31808e74d
Record created2012-07-23
Record modified2016-05-09
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