Geosynthetics in Flexible and Rigid Pavement Overlay Systems to Reduce Reflection Cracking

Details

• Creators:
  Cleveland, Gregory S. ; Button, Joe W. ; Lytton, Robert L.
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Asphalt Pavements Composite Materials Fabrics Field Tests Flexible Pavements Geosynthetics Geotextiles Grids (Coordinates) Hot Mix Asphalt Laboratory Tests Literature Reviews Overlays (Pavements) Pavement Performance Signs

  More +
• Publication/ Report Number:
  FHWA/TX-02/1777-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  September 1999 - August 2001
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  The primary objective of this research project was to evaluate geotextiles placed under or within a hot mix asphalt (HMA) overlay to reduce the severity or delay the appearance of reflection cracks. Researchers evaluated six geosynthetics, representing fabrics, grids, and composites in the laboratory using the TTI Overlay Tester. The overlay tester accommodates a 3x6x20-inch HMA beam and evaluates the relative ability of different beams (with and without a geosynthetic) to resist thermal cracking. Geosynthetics consistently increased number of cycles to failure in laboratory tests. Researchers then used fracture mechanics to evaluate the laboratory results and develop a new evaluation methodology termed the reinforcing factor. Comparative field test pavements were established in three regions of Texas (Amarillo, Waco, and Pharr Districts) with widely different climates. Due to unavoidable delays, only the Pharr test pavements were constructed before this report was written. These planned field tests will be constructed and all three will be evaluated for several years particularly regarding reflective cracking.
• Format:
  PDF
• Funding:
  0-1777
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:331bbb5ba0336df8fa0ecd129197def9b53d03d478b49e193757f49392dec41edf00332e25bc47756d7a16ecf7e9dbb3b1806e807bb1a80966e421a243a8dd4f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86245/dot_86245_DS1.pdf
• File Type:
  [PDF - 3.76 MB ]