Mechanistic flexible pavement overlay design program : tech summary.

Details

• Creators:
  Wu, Zhong ; Gaspard, Kevin
• Corporate Creators:
  Louisiana Transportation Research Center
• Corporate Contributors:
  Louisiana. Dept. of Transportation and Development ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Flexible pavements
  • Overlays (Pavements)
  • Pavements, Flexible--Louisiana
  • Pavements--Overlays
  • Pavements--Testing
• Publication/ Report Number:
  FHWA/LA.08/454
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  The Louisiana Department of Transportation and Development (LADOTD) currently follows the 1993 ; AASHTO pavement design guide’s “component analysis” method in its fl exible pavement overlay thickness ; design. Such an overlay design method, however, does not require performing any fi eld or laboratory tests ; to assess existing pavement structural conditions. Instead, pavement engineers have to use a pre-assigned, ; parish-based subgrade resilient modulus value and a set of assumed structural layer coeffi cients in an overlay ; thickness design. Obviously, such an overlay thickness design procedure could potentially lead to an over- or ; under-designed overlay thickness since none of the design parameters represent actual fi eld conditions.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18545/dot_18545_DS1.pdf
• File Type:
  [PDF - 125.65 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:6797e9fcb19d935a430ca73bff64d4793f438c49e7f7b77d6bc3de0818bdf379