STRAINS DUE TO LOAD IN FROZEN AND THAWED FLEXIBLE PAVEMENTS

Changing temperatures and moisture states in flexible pavements are largely responsible for the changes in the overall structural behavior of the system. Identifying the period of time in which a flexible pavement is subject to extreme weakening, the critical period, has long been a concern of engineers in cold climates. This paper discusses the deflection and strain measurements that were made during the frozen and thawing period. The measured deflections are interpreted in light of the temperature changes which took place in the pavement sections. Attempts at the backcalculation of layer moduli during this time period are presented along with a comparison of the measured response to those obtained from analytical models. The relative influence of factors affecting the estimated strains are discussed.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 683-704
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00730083
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Nov 27 1997 12:00AM