QUANTITATIVE MONITORING OF ALKALI AGGREGATE REACTIONS USING ACOUSTIC EMISSION

A significant part of the deterioration of the world's concrete infrastructure, especially highways and bridges, is caused by reactions between the cement and the aggregate (AAR). Such reactions are especially troublesome because the reaction often proceeds so slowly that problems do not emerge until years after construction. Furthermore until recently there has not been any reliable test to determine whether a particular aggregate-cement combination was likely to react. However even present tests for AAR potential have at least three problems - they are qualitative rather than quantitative; often time consuming; and often inconclusive. This paper presents an alternative, non-destructive method, using the acoustic emission technique, which can provide a quantitative estimate of AAR potential within a few days of casting. (A) For the covering abstract see IRRD 871351.

Language

  • English

Media Info

  • Pagination: p. 1043-9

Subject/Index Terms

Filing Info

  • Accession Number: 00711163
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-946691-46-0
  • Files: ITRD
  • Created Date: Sep 20 1995 12:00AM