FWD BACKCALCULATED MODULI COMPARED WITH PAVEMENT PRESSUREMETER MODULI CYCLIC TRIAXIAL MODULI

A relatively new in situ testing device, the pavement pressuremeter (PPMT), was used on three airport pavement subgrades in order to evaluate its usefulness in pavement design and evaluation. Four models which predict the modulus for various stress levels, various strain levels, various loading rates or creep, and repetitive loadings were chosen since these loads are all encountered on airport pavements. An airport PPMT test was developed which enabled four models to be evaluated. The PPMT moduli from the four models were compared with moduli from cyclic triaxial (CT) tests and moduli backcalculated from falling weight deflectometer (FWD) tests. The moduli comparison indicated that the pavement pressuremeter was capable of yielding moduli similar to both the cyclic triaxial and falling weight deflectometer tests. FWD deflections were compared with deflections predicted by inputting PPMT moduli and CT moduli into the finite-element program ILLI-PAVE.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 323-340

Subject/Index Terms

Filing Info

  • Accession Number: 00795860
  • Record Type: Publication
  • ISBN: 0803112602
  • Report/Paper Numbers: ASTM STP 1026
  • Files: TRIS
  • Created Date: Jul 6 2000 12:00AM