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

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