FLEXURAL TESTS OF PAVING MATERIALS FOR ORTHOTROPIC STEEL PLATE BRIDGES

A TEST PROGRAM WAS INTIATED TO INVESTIGATE THE PROPERTIES OF DESIGNATED MATERIALS FOR SELECTION OF AN APPROPRIATE WEARING SURFACE FOR THE NEW ORTHOTROPIC /STEEL-PLATE/ BRIDGE ACROSS SAN FRANCISCO BAY AT SAN MATEO. THE PROGRAM REQUIRED THE PREPARATION OF SPECIAL COMPOSITE BEAM TEST SPECIMENS IN WHICH THE PAVING MATERIAL IS COMPACTED ON TOP OF A STEEL PLATE. NECESSARY BEAMS FOR THE TESTING PROGRAM WERE PREPARED AND ULTIMATELY TESTED FOR FLEXURAL FATIGUE. A THEORETICAL ANALYSIS OF THE BEHAVIOR OF COMPOSITE BEAMS IN FLEXURAL FATIGUE REVEALS THAT RELATIVELY LARGE TENSILE STRAINS CAN BE EXPECTED IN THE PAVING MATERIAL DURING THE FATIGUE TEST. THIS FINDING IS BASED ON PROPERTIES OF THE PAVING MATERIALS CALCULATED FROM THE STIFFNESS OF THE BINDERS IN THE MIXES AT THE DESIGNATED RATE OF LOADING. THE RELATIVELY LARGE STRAINS PRODUCED DURING THE TEST PROVIDE AN EXPLANATION FOR THE SHORT FATIGUE LIFE OF THE ASPHALT-CONCRETE MIXES. IN A SUBSEQUENT SERIES OF TESTS, ACTUAL STRAINS MEASURED SHOWED REASONABLY GOOD AGREEMENT WITH CALCULATED STRAIN VALUES.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1967/155/155-004.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Mechanical Properties of Bituminous Paving Mixtures and Committee on Construction Practices-Structures and presented at the 45th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Metcalf, C T
• Publication Date: 1967

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 61-81
• Monograph Title: Structural construction
• Serial:
  • Highway Research Record
  • Issue Number: 155
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt concrete; Beams; Bridge decks; Composite materials; Fatigue (Mechanics); Fatigue tests; Flexural strength; Materials tests; Orthotropic; Specimens; Steel; Strain measurement; Theory; Wearing course (Pavements)
• Uncontrolled Terms: Composite beams; Fatigue life
• Subject Areas: Bridges and other structures; Construction; Highways; Materials;

Filing Info

• Accession Number: 00210638
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Apr 6 1994 12:00AM