TRENDS IN THE DEVELOPMENT OF FLEXIBLE PAVEMENT DESIGN IN HUNGARY

The authors describe the Hungarian practice of flexible pavement structure design and pavement strengthening. The catalogue of typical pavement structures is currently being compiled. Research is in progress to simplify the computer calculation of these multi-layer systems. Work is also being done on a computer interpolation of the Jones-tables of a three-layer system. A simplified program has been written in order to reduce computer time and capacity, which calculates four pavement structure layers by the finite elements method. The soil layer is assumed to be an elastic semi-infinite continuum characterised by the Young's Modulus and the Poisson value. This computer program may also be run on smaller computers. The authors investigated the sensitivity of the design method to changes in the soil load bearing capacity in the cases of pavement structures designed for low, medium and heavy traffic. The plastic moduli of the asphalt courses have been determined at the Central European annual average air temperature (plus 15 deg C) and the typical temperature (plus 5 deg C) of the thaw period. On the grounds of the results obtained it can be stated that the role of the soil load bearing capacity in the design of pavement structures is smaller than hitherto assumed. The splitting strength of asphalt materials is tested and the elastic modulus is determined at the same time. /Author/

• Supplemental Notes:
  • Volume I of proceedings of 4th International Conference on Structural Design of Asphalt Pavements, Ann Arbor, Michigan, August 22-26, 1977.
• Corporate Authors:

  University of Michigan, Ann Arbor

  Department of Civil Engineering
  Ann Arbor, MI  United States  48109
• Authors:
  • Nemesdy, E
  • Keleti, I
  • Boromisza, T
  • Gaspar Jr, L
• Conference:
  • Volume I of proceedings of 4th International Conference on Structural Design of Asphalt Pavements, Ann Arbor, Michigan, August 22-26, 1977.
• Publication Date: 1977-1

Media Info

• Features: Figures; References;
• Pagination: p. 417-423

Subject/Index Terms

• TRT Terms: Asphalt; Bearing capacity; Computer programs; Flexible pavements; Information processing; Modulus of elasticity; Pavement design; Pavement layers; Poisson ratio; Soils; Temperature; Testing; Traffic volume
• Old TRIS Terms: Poissons ratio; Soil bearing capacity
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00170228
• Record Type: Publication
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Mar 14 1978 12:00AM