Onsite use of recycled asphalt pavement materials and geocells to reconstruct pavements damaged by heavy trucks.

Details

• Creators:
  Han, Jie ; Acharya, Bhagaban ; Thakur, Jitendra K. ; Parons, Robert L.
• Corporate Creators:
  Mid-America Transportation Center
• Corporate Contributors:
  United States. Department of Transportation. Research and Innovative Technology Administration ; United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Heavy vehicles
  • Asphalt pavements
  • Deterioration
  • Deformation
  • Reconstruction
  • Recycled materials
  • Performance tests
  • Geogrids
  • Roads--Deterioration
  • Pavements, Asphalt--Recycling
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• Publication/ Report Number:
  25-1121-0001-462
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final report.
• Corporate Publisher:
  Mid-America Transportation Center
• Abstract:
  Asphalt pavements deteriorate with traffic (especially heavy trucks) and time. Maintenance and overlaying may solve minor to ; medium pavement distress problems. When the condition of a pavement becomes badly deteriorated, reconstruction of the ; pavement may become an economic and feasible solution. Reconstruction of a pavement requires removal of pavement surfaces. ; On-site use of recycled asphalt pavement materials has obvious benefits from economic, to environmental, to sustainability points ; of view. One attractive option is to use recycled asphalt pavement (RAP) materials as base courses with a thin new overlay. ; However, RAP has its limitations; for example, it creeps under a sustained load due to the presence of asphalt binder. A ; preliminary study conducted by the principal investigators has shown that the use of geocell to confine RAP minimizes creep of ; RAP under a sustained load. However, the performance of geocell-reinforced RAP as a base course overlaid by an asphalt surface ; is unknown. This research will utilize the geotechnical test box available at the University of Kansas to simulate the reconstruction of damaged asphalt pavements by geocell-reinforced RAP bases overlaid by a thin asphalt layer and evaluate their ; performance under cyclic loading. The main objectives of this research are to confirm the concept of using RAPs with geocells to ; reconstruct damaged pavements by heavy trucks and examine the benefit of geocells to the pavement life as compared with ; unreinforced base courses. In this research, at least four test sections will be constructed in the geotechnical test box including ; control sections and geocell-reinforced sections. The properties of RAP including asphalt binder content and viscosity, aggregate ; properties, compaction curve, and California Bearing Ratio (CBR) will be evaluated in the laboratory. The subgrade will be ; prepared using an artificial soil by mixing Kansas River sand with Kaolin and compacted at an intermediate strength (i.e., 5% ; CBR). The pavement sections will be tested under cyclic loading up to 25-mm rut depth.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25426/dot_25426_DS1.pdf
• File Type:
  [PDF - 3.87 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c4aa2266206fdfe48ea7d833cf85979e0d65209f6ae76cca3da35e9a302efde9c27de39e8f9d69b238401ce3ce41bf7e1b1b4c33f8a9ffff900f738b7616cda6