EFFECT OF SYNTHETIC AGGREGATE THERMAL TRANSFORMATION ON PERFORMANCE OF CONCRETE

THE INVESTIGATION INVOLVED TWELVE DIFFERENT SYNTHETIC AGGREGATES PRODUCED IN THE TTI ROTARY KILN, ONE COMMERCIALLY PRODUCED SYNTHETIC LIGHTWEIGHT AGGREGATE, AND ONE REGULAR WEIGHT AGGREGATE. EACH AGGREGATE WAS USED IN CONCRETE WHICH WAS SUBJECTED TO A VARIETY OF PHYSICAL DURABILITY INVESTIGATIONS INCLUDING AUTOCLAVE EXPANSION, LONG-TIME REACTIVITY, FREEZE-THAW, AND SHRINKAGE. FROM THE RESULTS OF THE STUDY IT WAS FOUND THAT INCOMPLETELY BURNED SYNTHETIC AGGREGATES RESULTED IN POOR PERFORMANCE IN THE STANDARD ASTM C-2900 FREEZE-THAW TEST FOR CONCRETE; POTENTIALLY DESTRUCTIVE AUTOCLAVE EXPANSION OCCURRED IN SOME CONCRETES; LONG-TIME REACTIVITY CURING PRODUCED NO SIGNIFICANT VOLUME CHANGES FOLLOWING INITIAL AUTOCLAVE TREATMENT, AND SHRINKAGE STUDIES SHOWED NO RELATIONSHIP TO DEGREE OF TRANSFORMATION OF THE SYNTHETIC AGGREGATES. /AUTHOR/

• Supplemental Notes:
  • Res Rept 81-10, 19 PP
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011
• Authors:
  • Houston, J T
  • Ledbetter, W B
• Publication Date: 1969-10

Subject/Index Terms

• TRT Terms: Artificial aggregates; Concrete; Concrete aggregates; Durability; Freeze thaw tests; Lightweight aggregates
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00217812
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 14 1970 12:00AM