Evaluating the Effectiveness of Fly Ashes to Mitigate ASR and Using Recycled Concrete Aggregate in New Construction

A comprehensive study was performed to evaluate mitigation options to reduce premature expansion due to alkali-silica reaction (ASR) for selected Wyoming aggregates. State-of-the-art and standardized test methods were performed and results were used to compare expansion levels. Four different fly-ash sources were tested. All of the sources mitigated the moderately reactive aggregates; the most highly expansive aggregate was mitigated by two out of the four fly ash sources. An exploratory test, the Autoclave Concrete Prism Test (ACPT) was evaluated by comparing results with the University of Wyoming and the University of Alabama. Test data shows agreement between two independent laboratories.

• Record URL:
  https://rosap.ntl.bts.gov/view/dot/60956
• Supplemental Notes:
  • Copyright ©2015. All rights reserved, State of Wyoming, Wyoming Department of Transportation, and the University of Wyoming. Cover title: Evaluating the Risk of Alkali-Silica Reaction in Wyoming: Continued Evaluation of Field Specimens and Proposed Mitigation Strategies.
• Corporate Authors:

  University of Wyoming, Laramie

  Department of Civil and Architectural Engineering
  1000 East University Avenue
  Laramie, WY  United States  82071

  Wyoming Department of Transportation

  Cheyenne, WY  United States 
• Authors:
  • Fiore, Bryce
  • 0000-0002-7446-3644
  • Hossain, Md Tarik
  • 0000-0002-4514-5620
  • Kimble, Margaret
  • 0000-0002-1735-7714
  • AlMutawa, Fayez
  • 0000-0002-2164-0416
  • Tanner, Jennifer Eisenhauer
  • 0000-0002-8279-6289
• Publication Date: 2018-1

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 104p

Subject/Index Terms

• TRT Terms: Alkali silica reactions; Concrete aggregates; Durability; Evaluation and assessment; Expansion; Field tests; Fly ash; Recycled materials; Test procedures
• Geographic Terms: Wyoming
• Subject Areas: Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 01687762
• Record Type: Publication
• Report/Paper Numbers: WY-18/04F
• Contract Numbers: RS02215
• Files: NTL, TRIS, ATRI, STATEDOT
• Created Date: Dec 5 2018 12:32PM