A NEW APPROACH TO CHARACTERIZE THE CHEMICAL REACTIVITY OF THE AGGREGATES

The ASTM C-289 Chemical Method has been reinvestigated, taking into account the published complaints and introducing additional ideas. The new test is called the kinetic test, simply because the time is now a parameter. The granulometric distribution has been changed and the measurement of Na2O replaces that of OH- in order to determine the alkalinity reduction. The limits between the innocuous and deleterious aggregates have been established, based on field record performance and/or on conventional concrete (coarse aggregates) or mortar bar tests (sand) issued from 150 aggregates. (A) For the covering abstract see IRRD 871351.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 1009-16

Subject/Index Terms

Filing Info

  • Accession Number: 00711160
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-946691-46-0
  • Files: ITRD
  • Created Date: Sep 20 1995 12:00AM