Effect of Synthetic Aggregate Thermal Transformation on Performance of Concrete

Details

• Creators:
  Houston, James T. ; Ledbetter, W. B.
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University ; University of Texas at Austin
• Corporate Contributors:
  Texas Highway Department ; United States. Department of Transportation. Federal Highway Administration. Bureau of Public Roads
• Subject/TRT Terms:
  • Artificial intelligence
  • Artificial aggregates
  • Concrete
  • Concrete aggregates
  • Durability
  • Freeze thaw tests
  • Lightweight aggregates
  • Thermal analysis
  • Performance
• Publication/ Report Number:
  81-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  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 (a) incompletely burned synthetic aggregates resulted in poor performance in the standard ASTM C-290 freeze-thaw test for concrete, (b) potentially destructive autoclave expansion occurred in some concretes, (c) long-time reactivity curing produced no significant volume changes following initial autoclave treatment, and (d) shrinkage studies showed no relationship to degree of transformation of the synthetic aggregates.
• Format:
  PDF
• Funding:
  2-8-65-81
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/84500/dot_84500_DS1.pdf
• File Type:
  [PDF - 2.02 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8348c0115d2319e3019952304441e3247ea48b0eb588bd7c9952c645aba75d3b244e6de71e8cd7075f30c03fd8022419e9a699b3b0845f200b735c77e57a2d31