Progress on the testing of full-sized reinforced concrete bridge slabs was reported. The slabs tested varied in length from 15 ft. to 19 ft. and in width from 7 ft. 3 in. to 6 ft. 6 in. Two of the test specimens were over 40 years old and recently removed from service. The other slabs were new and designed 1) in accordance with current specifications, 2) in accordance with the ultimate-load theory, and 3) prestressed by pretensioning in accordance with current practices. The testing machine and procedure were described. Results show that the old slabs carried a load of over 3 1/2 times the design load. A comparison of the ultimate loads for the regular design and the ultimate-load and prestressed slabs shows that the three slabs carried approximately the same load. There was no indication of bond failure or slippage in the prestressed slab. There was no indication of diagonal tension failures in the prestressed slab.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Publication Date: 1954

Media Info

  • Features: Tables;
  • Pagination: p. 462-465
  • Serial:
    • Volume: 55
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00052415
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM