This Innovations Deserving Exploratory Analysis (IDEA) project developed, fabricated, and evaluated an innovative excogitated composite multifunctional (ECM) layer that would provide for design and construction of pavements with improved performance and design life. The ECM layer was envisioned as a three-dimensional material that would satisfy multiple functions in the pavement system by providing for subbase layer-subgrade separation, subbase shear strength, subbase tensile strength, drainage, and protection of the subgrade from surface infiltration. The layer strength increased significantly by changing the polymer blend in the polyethylene structure and by utilizing a stiffer geotextile. Large-scale laboratory and limited field pavement tests showed that the ECM layer had the potential for improving pavement performance.

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  • Supplemental Notes:
    • This NCHRP-IDEA investigation was conducted by the University of Illinois, Urbana-Champaign. The original project title was Composite Pavement Layer. 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
  • Corporate Authors:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Dempsey, B J
  • Publication Date: 1995-10


  • English

Media Info

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Filing Info

  • Accession Number: 00727265
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP-IDEA Project 006
  • Contract Numbers: NCHRP-92-ID006
  • Files: TRIS, TRB
  • Created Date: Oct 11 2001 12:00AM