A PROCEDURE FOR EVALUATING PAVEMENTS WITH NONUNIFORM PAVINGS MATERIALS

A PROCEDURE WAS DEVELOPED TO EVALUATE LAYERED SYSTEMS WITH NONUNIFORM MATERIAL PROPERTIES. THE PROCEDURE CONSISTS OF DEFINING THE LAYERED SYSTEM BY A PHYSICAL MODEL CONSISTING OF MASS POINTS TIED TOGETHER BY SPRINGS AND BARS. THE VARIABILITY OF THE MATERIAL IS SIMULATED BY ASSIGNING DIFFERENT CHARACTERISTICS OF THE MTERIAL PROPERTIES TO SPRINGS CONNECTING THE MASS POINTS. ASSIGNMENT OF VALUES REPRESENTING THE MATERIAL PROPERTIES IS DONE ON A RANDOM BASIS. THE RANDOM VALUES ARE GENERATED IN A MANNER THAT PRODUCES A MODEL WITH MEAN CHARACTERISTICS CORRESPONDING TO THE MEAN PROPERTIES OF THE MATERIALS IN THE VARIOUS LAYERS OF THE PAVEMENT, AND WITH A COEFFICIENT OF VARIATION OF THE CORRESPONDING PAVING MATERIAL. RESULTS SHOW THAT THE RESPONSE OF THE LAYERED SYSTEM IS INFLUENCED BY THE STATISTICAL LCHARACTERISTICS OF THE MATERIALS. THE STATISTICAL NATURE OF THE RESPONSE IS INFLUENCED BY BOTH THE VARIABILITY OF THE MATERIAL AND THE NATURE OF THE VARIABILITY. A LARGE AREA WITH SLIGHTLY LESS THAN AVERAGE STIFFNESS HAS A GREATER INFLUENCE ON THE RESPONSE OF THE SYSTEM THAN A LARGE DIFFERENCE IN STIFFNESS OVER A SMALL AREA. THUS, DETAILED ANALYSES ARE NECESSARY TO OBTAIN A COMPREHENSIVE UNDERSTANDING OF THE BEHAVIOR OF THE SYSTEM. MUCH WORK STILL NEEDS TO BE DONE TO OBTAIN A COMPLETE PICTURE OF THE STATISTICAL NATURE OF PAVEMENT RESPONSE. PRELIMINARY RESULTS STRONGLY INDICATE A NEED FOR THE TYPE OF ANALYSIS PRESENTED IN THE PAPER AS A GUIDE FOR ESTABLISHING REALISTIC QUALITY CONTROL CRITERIA FOR PAVING MATERIALS. WITH RESULTS FROM SUCH A PROCEDURE IT IS POSSIBLE TO ESTABLISH A COST BENEFIT FROM HIGHER QUALITY CONTROL CRITERIA. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1970/337/337-005.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Theory of Pavement Design and presented at the 49th 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:
  • Levey, James R
  • Barenberg, Ernest J
• Publication Date: 1970

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: pp 55-69
• Monograph Title: Theory of pavement design
• Serial:
  • Highway Research Record
  • Issue Number: 337
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Building materials; Discrete systems; Mathematical models; Pavements; Quality control; Randomization; Sampling; Standardization; Statistical quality control; Statistical sampling; Structural analysis; Variables
• Old TRIS Terms: Discrete elements; Layered system mechanics; Nonuniformity
• Subject Areas: Data and Information Technology; Highways; Pavements;

Filing Info

• Accession Number: 00205866
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jun 11 1971 12:00AM