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Canadian experience of alkali-expansivity in concrete

From National Research Council Canada

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  1. National Research Council of Canada
FormatText, Article
ConferenceConference on Alkali-Aggregate Reaction in Concrete: 30 March 1981, Cape Town, South Africa
SubjectConcrete; alkalinity; Portland cement; pozzolan cement; petrography; fly ash
Abstract
Alkali 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.
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  • Proceedings, Conference on Alkali-Aggregate Reaction in Concrete: 30 March 1981, Cape Town, South Africa S 252/6 (1981): 1–11.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-991
NRC numberNRCC 19673
NRC-IRC-1508
NPARC number20386136
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Record identifier5ae52f74-cebd-4780-9d79-43b4cd6a395d
Record created2012-07-25
Record modified2024-03-22
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