CONSTRUCTION AND TESTING OF 1/10-SCALE MICRO-CONCRETE MODEL OF NEW POTOMAC RIVER CROSSING, I-266

In order to confirm that the design provides a structure complying with all service load criteria (or indications where modifications are necessary), and to determine that the design provides a structure of adequate strength, a microconcrete model of the proposed three-span box-girder bridge was constructed and tested to destruction. The results of structural tests carried out on the model showed that at service load (representing the dead load of the prototype and one live load plus impact under HS20-44 loading), no structural cracking occured and at design ultimate load, only minor structural cracking was present. Data obtained during the test to destruction showed that under severe overload there was an additional margin of safety against instability of the fascias and webs.

  • Corporate Authors:

    Portland Cement Association

    5420 Old Orchard Road
    Skokie, IL  USA  60077
  • Authors:
    • Corley, W G
    • Carpenter, J E
    • Russell, H G
    • Hanson, N W
    • Cardenas, A E
    • Helgason, T
    • Hanson, J M
    • Hognestad, E
  • Publication Date: 1975

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00127516
  • Record Type: Publication
  • Report/Paper Numbers: RD 031.01 E
  • Files: TRIS
  • Created Date: Jan 14 1976 12:00AM