BEHAVIOR OF SHRINKAGE-COMPENSATING CONCRETE

The objective of this research was to determine if shrinkage-compensating concrete, when compared with Type 1 concrete, would reduce corresion of the reinforcing steel in a bridge deck, hence minimizing deterioration. Specimens 1 ft (305 mm) by 6 ft (1830 mm) and 7 in. (180 mm) deep were first cracked and then subjected to freezing and thawing in the presence of deicing salts. After freeze-thaw cycling, tests were conducted to determine the porosity and chloride content of the respective concrete type. The results show clearly that the shrinkage-compensating concrete simulated bridge decks crack significantly less than the Type 1 concrete bridge decks. However, at locations where cracks are present, the development of corrosion will be the same for both types of concrete. The shrinkage-compensating concrete was found to have a slightly higher porosity than the Type 1 concrete. The chloride concentration determined after the freeze-thaw tests was higher for the shrinkage-compensating concrete at a 1-in. (25-mm) depth but at a depth of 2 in. (50 mm) the concentrations were the same for both concretes. and the movement systems which are determined to be feasible and desirable, and includes explanatory text and material describing the function, operations and spatial interrelationships of the various modes. It includes an evaluation of the financial feasibility of the plan recommendations and an estimate of the construction and development costs involved, as well as recommendations on the phasing of the plan in graphic and descriptive form.

• Supplemental Notes:
  • Sponsored by Illinois DOT and co-sponsored by DOT, Federal Highway Administration.
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Department of Aeronautical and Astronautical Engineering
  Urbana, IL  United States  61801
• Authors:
  • Cusick, R W
  • Kesler, C E
• Publication Date: 1976-7

Media Info

• Pagination: 49 p.

Subject/Index Terms

• TRT Terms: Bridge decks; Chloride content; Corrosion; Deicing chemicals; Deterioration; Expansive concrete; Fracture mechanics; Freeze thaw tests; Porosity; Reinforcing steel
• Subject Areas: Highways; Planning and Forecasting;

Filing Info

• Accession Number: 00158139
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-IL-76 Intrm Rpt.
• Contract Numbers: IHR-405
• Files: TRIS, USDOT
• Created Date: Sep 28 1977 12:00AM