THE COMBINED USE OF FLY ASH AND LITHIUM NITRATE FOR CONTROLLING EXPANSION DUE TO ALKALI-SILICA REACTION

This paper presents preliminary data from a comprehensive research program investigating the efficacy of combinations of fly ash and lithium compounds for preventing damaging expansion due to alkali-silica reaction in concrete. The data presented include results from mortar bar expansion tests using two highly reactive aggregates from New Mexico and Pyrex glass (i.e. ASTM C 227 and C 441), and from a modified version of the accelerated mortar bar test (ASTM C 1260). Cements were blended to give a range of alkali levels and fly ashes from six different sources were selected to provide a range of chemical compositions. Lithium was added to mortars in the form of a 30% lithium nitrate solution. The data indicate that the beneficial effects of lithium and fly ash are cumulative when the materials are combined and, in some cases, there is a synergistic effect.

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    • Full conference proceedings available on CD-ROM.
  • Corporate Authors:

    University of Texas, Austin

    International Center for Aggregates Research, 3208 Red River
    Austin, TX  United States  78705-2650

    Texas A&M University, College Station

    Faculty Exchange Box H
    College Station, TX  United States  77843
  • Authors:
    • Thomas, M
    • Baxter, S
    • Stokes, D
    • Hill, R
  • Conference:
  • Publication Date: 2001

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 15p

Subject/Index Terms

Filing Info

  • Accession Number: 00983581
  • Record Type: Publication
  • Report/Paper Numbers: Final Draft
  • Files: TRIS
  • Created Date: Dec 27 2004 12:00AM