Canadian experience of alkali-expansivity in concrete

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ConferenceProceedings, Conference on Alkali-Aggregate Reaction in Concrete: 30 March 1981, Cape Town, South Africa
VolumeS 252/6
Pages111; # of pages: 11
Subjectalkalinity; portland cement; pozzolan cement; petrography; fly ash; Concrete
AbstractAlkali expansivity has been identified as the primary cause of deterioration of concrete structures in Canada. Potentially expansive aggregates have been found in numerous locations throughout the country. The paper describes the requirements and recommendations contained in the current CSA standards as they apply to the testing and use of aggregate, restrictions on alkali concentrations in portland cement and pozzolans, and the addition of limestone to portland cement. Case examples from each of seven regions across Canada are presented to show the effects of deterioration caused by alkali-expansivity.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number19673
NPARC number20386136
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Record identifier5ae52f74-cebd-4780-9d79-43b4cd6a395d
Record created2012-07-25
Record modified2016-05-09
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