STEEL FIBER REINFORCED SUPERPLASTICIZED CONCRETES FOR REHABILITATION OF BRIDGE DECKS AND HIGHWAY PAVEMENTS. FINAL REPORT

The primary objective of this research is to develop tough, high-strength, high density, durable concrete for the construction of bridge decks and other structures through the use of superplasticizers and steel fibers. The study was conducted in two phases. In the first phase, basic properties of superplasticized concrete were investigated. In the second phase, steel fiber reinforced superplasticized concretes wre evaluated for their basic properties and performance characteristics. The experimental work conformed to the requirements dictated by statistically valid factorial designs, so that analysis of variance could be used in the evaluation. The findings of the first phase of the work were published in Phase one Interim Report (DOT/RSPA/DPB-50/81/3) and its Supplement. Results of the second phase of investiagion are presented in this report. After an extensive investigation of the basic parameters, water cement ratio, cement content, fiber content, and superplasticizer dosage, two concretes, one with the medium workability and high cement content suitable for bridge deck replacement, and another with high workability suitable for structural and pavement concrete, were selected for intensive study. For these concretes properties of the fresh and hardened concrete are reported. Slump loss and the effects of retempering are described. The selected concretes were also evaluated for freeze-thaw durability, deicer scaling, shrinkage and creep. Superplasticized concrete containing steel fibers exhibited superior performance characteristics, it had higher freeze-thaw durability, tremendously higher impact resistance, toughness index, energy absorbing capacity, post-crack load carrying capacity, higher flexural strength, slightly higher compressive strength, and lower permeability.

• Corporate Authors:

  South Dakota School of Mines and Technology, Rapid City

  Department of Civil and Environmental Engineering, 500 East St Joseph Street
  Rapid City, SD  United States  57701

  Department of Transportation

  Office of University Research, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ramakrishnan, V
  • Coyle, W V
• Publication Date: 1983-7

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 157 p.

Subject/Index Terms

• TRT Terms: Analysis of variance; Bearing capacity; Bridge decks; Compressive strength; Concrete; Concrete hardening; Driver rehabilitation; Durability; Energy absorption; Fiber reinforced concrete; Flexural strength; Freeze thaw durability; Fresh concrete; High strength concrete; Pavement maintenance; Permeability; Physical properties; Shock resistance; Steel fibers; Superplasticizers; Toughness
• Uncontrolled Terms: Concrete properties; Hardened concrete; Impact strength; Rehabilitation
• Old TRIS Terms: Toughness index
• Subject Areas: Bridges and other structures; Construction; Data and Information Technology; Highways; Maintenance and Preservation; Materials; Pavements; I32: Concrete;

Filing Info

• Accession Number: 00453538
• Record Type: Publication
• Report/Paper Numbers: DOT-RSPA-DMA-50, SDSM&T-CDT-822
• Contract Numbers: DOT-RC-92035
• Files: TRIS, USDOT
• Created Date: May 31 1986 12:00AM