CHEMICAL TESTS FOR ALKALI REACTIVITY OF CONCRETE AGGREGATE

IN THE ABSENCE OF A COMPLETELY RELIABLE AND SATISFACTORILY REPRODUCIBLE PROCEDURE TO DETERMINE THE POTENTIAL ALKALI REACTIVITY OF CONCRETE AGGREGATE, QUICK CHEMICAL TESTS CAN BE USEFUL IN PRELIMINARY EVALUATION. HOWEVER, THIS TEST CAN GIVE ANOMALOUS RESULTS WITH CALCIUM, MAGNESIAN, FEROUS CARBONATES, AND SOME HYDROUS MAGNESIAN SILICATES. CHEMICAL TESTS SUCH AS ASTM C289-54T BY THEIR NATURE IGNORE IMPORTANT PETROGRAPHIC FACTORS, POROSITY AND PARTICLE-SIZE DISTRIBUTION. POTENTIAL REACITIVTY IS INDICATED BY CHEMICAL TESTS INVOLVING INTERACTION OF THE AGGREGATE MATERIAL AND ALKALINE SOLUTIONS ONLY IF DISSOLUTION OF SILICA AND REDUCTION OF ALKALI CONCENTRATION ARE BOTH MEASURED.

• Supplemental Notes:
  • No 18-c, pp 26-28, 12 REF
• Authors:
  • Mielenz, R C
• Publication Date: 1958

Media Info

• Serial:
  • Highway Research Board Research Reports
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregates; Alkali aggregate reactions; Chemical tests
• Uncontrolled Terms: Aggregate analysis
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00214076
• Record Type: Publication
• Files: TRIS
• Created Date: May 29 1972 12:00AM