STRUCTURAL BEHAVIOR OF BITUMINOUS CONCRETE OVERLAY ON CEMENT CONCRETE PAVEMENT

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

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/sr/sr116/116-026.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309018439
• Supplemental Notes:
  • 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:
  • Marwah, B R
  • Khanna, S K
  • Arora, M G
• Conference:
  • Western Summer Meeting
  • Location: Sacremento California, United States
  • Date: 1970-8-17 to 1970-8-19
• Publication Date: 1971

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 215-226
• Monograph Title: Improving Pavement and Bridge Deck Performance
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 116
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt concrete; Concrete pavements; Deformation; Load transfer; Overlays (Pavements); Static loads; Structural analysis; Structural mechanics; Thickness
• Uncontrolled Terms: Structural behavior
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00205876
• Record Type: Publication
• ISBN: 0309018439
• Files: TRIS, TRB, ATRI
• Created Date: Jun 29 1971 12:00AM