Some unusual alkali-expansive aggregates

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Journal titleEngineering Geology
IssueDec 3
Pages181195; # of pages: 15
Subjectconcrete admixtures; rocks; bases (chemistry); expansion; Concrete
AbstractThe subgreywackes from the quarry at Alert, Ellesmere Island, N.W.T., Canada, have been found by length-change tests to have a definite potential for causing expansion of concrete by a type of alkali-aggregate reaction. The rocks are physically sound but have petrographic affinities with known alkali-expansive rocks in the maritime provinces. Rocks of this sort may by recognized by a petrographer familiar with this type of problem.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number14228
NPARC number20374285
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Record identifier8ada291b-4eff-4b44-8b91-1f367f1470ec
Record created2012-07-23
Record modified2016-05-09
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