Benefits of mechanistic approach in flexible pavement design

The present work was undertaken to evaluate the benefit of a mechanistic approach in flexible pavement design. Two types of soils (soil-A and soil-B) were selected in this study. A number of laboratory tests were conducted on these soils for their classification. The static triaxial test was conducted on these soils, as well as on other pavement layers material at a confining pressure of 40 kPa. The results obtained from static triaxial tests were further used in finite element modeling of the flexible pavement as per Indian practice code Indian Roads Congress (IRC):37-2001. To understand the response of pavement, the finite element modeling is carried out on multilayered flexible pavements resting on subgrade soil - A and B using commercial software ANSYS. The vertical compressive strain developed at the top of subgrade soil was further used for estimation of the number of cycles taken by pavement. The study shows that the pavement resting on subgrade soil - A modeled as per IRC:37-2001 for a traffic intensity of 150 msa may take 694 msa. i.e., almost 4.62 times more than conventional practices.

  • Availability:
  • Supplemental Notes:
    • Abstract reprinted with permission from the publisher.
  • Authors:
    • Nagrale, Prashant P
    • Deepak, More
  • Publication Date: 2014-3


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 31-38
  • Serial:
    • Indian Highways
    • Volume: 42
    • Issue Number: 3
    • Publisher: Indian Roads Congress
    • ISSN: 0376-7256

Subject/Index Terms

Filing Info

  • Accession Number: 01523177
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 17 2014 2:08PM