Use of Pozzolan or Slag in Concrete to Control Alkali-Silica Reaction and Sulfate Attack

Abstract

Five different materials (one Class C fly ash, two silica fumes, and two ground granulated iron blast-furnace slags (slag) were characterized by a combination of tests, standard physical and physical plus some petrographic examination. Mortar mixtures were then made using different amounts of each of these materials with high-alkali portland cement. Specimens from these mixtures were tested for expansion due to alkali-silica reaction (ASR) by CRD-C 257 (ASTM C 441) and for expansion due to sulfate attack by CRD-D 211 (ASTM C 1012). The expansion data were evaluated to determine the amount of each material required to control either process or the combined effects of both. A few concrete mixtures were then made using the indicated amounts of the fly ash, silica fume, and slag, and specimens were tested as before to determine the effectiveness of these materials to control deleterious expansion in concrete. Keywords: Alkali- silica reaction, Fly ash, Natural pozzolan, Pozzolan, Silica fume, Slag, Sulfate attack.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1988
Accession Number
ADA198810

Entities

People

  • Alan D. Buck

Tags

DTIC Thesaurus Topics

  • Availability
  • Blast Furnaces
  • Chemical Reactions
  • Classification
  • Combustion
  • Compressive Strength
  • Concrete
  • Construction
  • Fly Ash
  • Furnaces
  • Magnesium Compounds
  • Materials
  • Physical Properties
  • Portland Cement
  • Security
  • Standards
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Pavement Materials Engineering.