PREDICTION OF SHRINKAGE STRESSES IN PAVEMENTS CONTAINING SOIL-CEMENT BASES

THE CREEP CHARACTERISTICS OF ALL OF THE MATERIALS IN THE PAVEMENT STRUCTURE TOGETHER WITH THE SHRINKAGE AND STRENGTH CHARACTERISTICS OF THE SOIL CEMENT ARE USED IN AN INCREMENTAL AXISYMMETRIC FINITE-ELEMENT SOLUTION TO THE PROBLEM OF SHRINKAGE CRACKING. STRESSES ARE PREDICTED AT SELECTED TIME INTERVALS BY INCREASING THE SHRINKAGE STRAINS IN THE SOIL CEMENT IN SMALL TIME INCREMENTS AND ALLOWING RELAXATION DUE TO CREEP TO OCCUR BEFORE SUPERPOSITION OF THE NEXT SHRINKAGE INCREMENT. TWO CASES ARE ANALYZED: ONE CONSIDERS A UNIFORM SHRINKAGE IN THE SOIL CEMENT; THE OTHER CONSIDERS A DIFFERENTIAL SHRINKAGE ASSUMING THAT DESICCATION BEGINS AT THE SURFACE OF THE SOIL-CEMENT BASE AND MIGRATES TOWARE THE INTERIOR. ALSO INCLUDED AS A BRIEF DISCUSSION OF THE INFLUENCE OF ASPHALT CONCRETE TEMPERATURE AND THERMAL EFFECTS ON THE MAGNITUDE OF THE SHRINKAGE STRESSES. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1971/362/362-006.pdf
• Supplemental Notes:
  • Sponsored by Committee on Flexible Pavement Design and presented at the 50th 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:
  • Pretorius, P C
  • Monismith, C L
• Publication Date: 1971

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References;
• Pagination: pp 63-86
• Monograph Title: Pavement systems
• Serial:
  • Highway Research Record
  • Issue Number: 362
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt concrete; Base course (Pavements); Pavement cracking; Shrinkage; Soil cement; Structural analysis; Structural mechanics
• Uncontrolled Terms: Structural behavior
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00207393
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Mar 7 1972 12:00AM