EXAMINATION OF THE USE OF RESILIENT MODULI IN FLEXIBLE PAVEMENT DESIGN

In recent years there has been a tendency to use resilient moduli in equations based on the theory of elasticity for evaluating flexible pavement thickness. This approach is critically reviewed in the light of theoretical considerations based on a two-layer Kelvin System. The behavior of Kelvin's model under repetitive loading is analyzed, and equations are derived for the total and residual strain as well as for the resilient modulus. An alternative method for evaluating the stress at the interface of a two-layer Kelvin system under repetitive loading is proposed. Numerical results are presented and compared with those obtained by the use of resilient moduli in the eleastic equations. The discrepancy found between these two methods leads to the conclusion that it might prove more correct to consider the behavior of pavements to be of a viscoelastic nature. At this stage, no attempt is made to characterize the actual behavior of pavements by any particular viscoelastic model.

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 180-190
  • Serial:
    • Volume: 6
    • Issue Number: Pt4

Subject/Index Terms

Filing Info

  • Accession Number: 00263178
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Nov 12 1974 12:00AM