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A review of test methods for alkali-expansivity of concrete aggregates

From National Research Council Canada

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  1. National Research Council of Canada
FormatText, Article
ConferenceConference on Alkali-Aggregate Reaction in Concrete, March 30, 1981, Cape Town, South Africa
SubjectConcrete; bases (chemistry); concrete admixtures; expansion; test procedures
Abstract
There are four accelerated test methods that are frequently used to determine the potential alkali-expansivity of various types of concrete aggregates. These are the mortar bar method, the concrete prism method, the rock cylinder method and the chemical method. The paper describes each of these methods and discusses the appropriateness of each for assessing expansivity reactions with different types of aggregate. Approximate minumum rates of expansion, above which samples would be considered deleteriously expansive, are presented for mortar bar and concrete prisms made with different types of aggregates.
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  • Proceedings, Conference on Alkali-Aggregate Reaction in Concrete: 30 March 1981, Cape Town, South Africa (1981): 1–13.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-990
NRC numberNRCC 19672
NRC-IRC-1507
NPARC number20378501
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Record identifier696ce302-8d0c-4c3f-9095-f84517ff9221
Record created2012-07-24
Record modified2024-03-22
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