Bridge Decks: Mitigation of Cracking and Increased Durability

This report discusses the application of expansive cements (Type K and Type G) and shrinkage-reducing admixtures (SRAs) in reducing the cracking due to drying shrinkage. The Type K expansive cement contained portland cement and calcium sulfoaluminate-based component whereas the Type G expansive system was made of portland cement and calcium oxide (CaO)-based component. The restrained expansion test in accordance with ASTM C 878 demonstrated that Type K and Type G concretes had minimal shrinkage at the end of 100 days. The Type K bridge deck model also exhibited a reduction in tensile strain on the order of 40-50 microstrains and reduction in excess shrinkage potential which showed its effectiveness in reducing the tensile stress due to drying shrinkage. The effect of mineral admixtures on expansion characteristics of Type K and Type G system is also discussed. The effectiveness of SRA was assessed using ASTM C 1581 that clearly showed the delay in cracking time due to addition of an SRA. The increase in SRA dosage reduced the drying shrinkage, but also resulted in reduction of compressive strength.

• Record URL:
  https://apps.ict.illinois.edu/projects/getfile.asp?id=3099
• Record URL:
  https://apps.ict.illinois.edu/projects/getfile.asp?id=4980
• 
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Department of Civil and Environmental Engineering
  205 North Mathews Avenue
  Urbana, IL  United States  61801-2352

  Illinois Department of Transportation

  Bureau of Materials and Physical Research
  126 East Ash Street
  Springfield, IL  United States  62704-4766

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Chaunsali, Piyush
  • Lim, Seungmin
  • Mondal, Paramita
  • Foutch, Douglas
• Publication Date: 2013-7

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Research Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 102p

Subject/Index Terms

• TRT Terms: Admixtures; Bridge decks; Compressive strength; Cracking; Durability; Expansive cement; Shrinkage; Tension
• Subject Areas: Bridges and other structures; Construction; Highways; Materials; I32: Concrete; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01489994
• Record Type: Publication
• Report/Paper Numbers: FHWA-ICT-13-023, UILU-ENG-2013-2024
• Contract Numbers: R27-88
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Aug 16 2013 11:39AM