FULL SCALE DYNAMICAL TESTING ON REINFORCED BITUMINOUS PAVEMENTS

Polymeric interlayers, such as geosynthetics, appear to be able to delay the surface cracking due to reflection fissures from the underlying layers of damaged bituminous pavements. They are usually laid over a bituminous tack coat prior to the construction of an overlay. In the author's experiment he examines the effectiveness of the insertion of geosynthetics in the top asphalt layers. In order to simulate the road pavement, he employed a steel box filled in the lower half with rubber. Above, two bituminous concrete layers with different interlayers were placed. In some specimens, deep artificial grooves were made in order to examine a damaged existing pavement. Then a laboratory research was undertaken to achieve a simulation of fatigue behavior: a maximum of 500,000 cycles of loading at a frequency of 5 Hz were applied. The results of the reinforced specimens showed, although there was no improvement of the overall stiffness before the occurrence of a certain degree of cracking, the advantages of interlayers insertion in terms of reduction of displacements and rut depths. By virtue of the results it's possible to consider insertion of geosynthetics in bituminous pavement an effective rehabilitation works technique.

• Availability:
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• Corporate Authors:

  Industrial Fabrics Association International

  345 Cedar Building, Suite 450
  St Paul, MN  United States  55101-1088
• Authors:
  • Dondi, G
• Conference:
  • Geosynthetics '97
  • Location: Long Beach, California, U.S.A.
  • Date: 1997-3-11 to 1997-3-13
• Publication Date: 1997

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 749-762

Subject/Index Terms

• TRT Terms: Bituminous pavements; Cracking of asphalt concrete pavements; Dislocation (Geology); Dynamic tests; Fatigue (Mechanics); Geosynthetics; Overlays (Pavements); Pavement layers; Polymers; Rehabilitation; Reinforcing materials; Ruts (Pavements); Simulation; Stiffness; Tack coats
• Uncontrolled Terms: Interlayers (Pavements); Top asphalt layer (Pavements)
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00795505
• Record Type: Publication
• ISBN: 0935803076
• Report/Paper Numbers: Volume 2
• Files: TRIS
• Created Date: Jul 19 2000 12:00AM