A Reactive aggregate undetected by ASTM tests

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Journal titleASTM Bulletin
Pages4851; # of pages: 4
Subjectcoarse aggregates; expansion; crackings (breaking); tests; Concrete
AbstractIn the course of a Canadian investigation, a dolomitic limestone coarse aggregate has been found that produces excessive expansion and cracking in concrete. Despite the observed influence of cement alkalis, the results of the ASTM Test Method C289 on the limestone were negative. The results of the ASTM mortar bar test were also negative but indicated some alkali-reactivity in the limestone. This brief paper is intended to provide for the benefit of those concerned with the use of the standard tests for alkali- aggregate reaction a record of this Canadian experience with an apparently unusual case of cement-aggregate reaction for which the standard tests were not effective.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number4570
NPARC number20331593
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Record identifier4ff39b43-43f4-457f-9041-a8d0c71c45c7
Record created2012-07-18
Record modified2016-05-09
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