PREDICTION OF THE BEHAVIOR OF ELASTOPLASTIC ROADS DURING REPEATED ROLLING USING THE MECHANO-LATTICE ANALOGY

REPEATED AXIAL LOAD TRIAXIAL TESTS ON A ROAD MATERIAL ARE DESCRIBED. THEY SHOWED THAT THE PLASTICITY OF AN ELASTOPLASTIC ROAD MATERIAL DECREASES MORE WITH REPEATED LOADING THAN WITH CONTINUOUS LOADING. WHEN THE CELL PRESSURE IS HIGH THE DAMPING FACTOR AND THE ELASTIC COMPLIANCES ALSO DECREASE MORE RAPIDLY. THE INITIAL ELASTOPLASTIC CHARACTERISTICS OF A ROAD MATERIAL WERE ASCRIBED TO A HYPOTHETICAL PAVEMENT BEING REPEATEDLY TRAVERSED BY A RIGID ROLLER AND BY A PNEUMATIC TIRE RESPECTIVELY. THE AUTHOR'S MECHANO- LATTICE ANALOGY WAS USED TO CALCULATE THE TRANSIENT AND RESIDUAL STRESS PATTERNS AFTER EACH OF SIX PASSES. THE DISTRIBUTION OF HORIZONTAL FLOW OF THE HYPOTHETICAL PAVEMENT WAS CALCULATED BY THE SAME MEANS. THESE THEORETICAL FINDINGS COMPARED QUALITATIVELY WITH THE RESULTS OF CORRESPONDING LABORATORY TESTS. IT WAS SHOWN THAT A MAXIMUM RESIDUAL STRESS IS ATTAINED, IN THIS CASE, AFTER SIX ROLLING PASSES AND THAT THE ROAD MATERIAL FLOWS FORWARD AGAINST THE DIRECTION OF TRAFFIC MOVEMENT IN A COMPLICATED BUT PREDICTABLE MANNER. IT IS THOUGHT THAT THE FLOW BEHAVIOR MAY CONTRIBUTE TO THE GROWTH OF UNEVENNESS ON ROAD SURFACES. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/374/374-004.pdf
• Supplemental Notes:
  • Sponsored by Committee on Compaction. 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:
  • Yandell, W O
• Publication Date: 1971

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: pp 29-41
• Monograph Title: Soil: compaction, classification and laterites
• Serial:
  • Highway Research Record
  • Issue Number: 374
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Behavior; Elasticity (Mechanics); Highways; Lattices; Loads; Materials; Plasticity; Research; Rolling; Surface course (Pavements); Triaxial shear tests
• Uncontrolled Terms: Loading
• Subject Areas: Construction; Highways; Materials; Research;

Filing Info

• Accession Number: 00215496
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: May 16 1972 12:00AM