Evaluation of Concrete Bridge Deck Mixtures Using Shrinkage-Ring Tests

Details

• Creators:
  Tanner, Jennifer E. ; Perez Buenfil, Shamel
• Corporate Creators:
  University of Wyoming. Department of Civil and Architectural Engineering and Construction Management ; University of Wyoming. Department of Mathematics and Statistics
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; Mountain-Plains Consortium ; North Dakota State University
• Subject/TRT Terms:
  • Bridge decks
  • Fiber reinforced materials
  • Shrinkage
  • Strength of materials
  • Cracking
  • Ring stress
  • Test procedures
• Publication/ Report Number:
  MPC 22-483, MPC-652
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Mountain-Plains Consortium ; North Dakota State University
• Abstract:
  The aim of this document is to evaluate and compare concrete mixture designs using a granitic aggregate and employing mitigation measures. Specific measures include polypropylene fibers and shrinkage reducing admixture (SRA). Four different mixture designs were evaluated: control, addition of 8 lb/yd3 (4.75 kg/m3) of polypropylene fibers, dosage of 2% SRA by weight of cementitious material, and the combination of both mitigation methods. Two experimental approaches were carried out to assess restrained shrinkage: single-ring and dual-ring. Mechanical properties such as compressive and tensile strength were studied for each mixture. Results indicated that incorporating fibers into the mixture roughly doubles the time to cracking. Adding SRA into the mix increased the cracking age by 90%. The combination of 8 lb/yd3 (4.75 kg/m3) of fibers with 2% of SRA replacement proved to be the most effective measure for extending cracking time—improving it by an average of five times the original cracking.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/65831/dot_65831_DS1.pdf
• File Type:
  [PDF - 2.41 MB]
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha-512:a334022e633d5832a0e6e1a213f1512a0c46bf789e7eb368ed9c83627a93759d7e5b5884d139c7a31d1a2e7426fe83bf22a5e29b87cb55f483783ccaa2933117