Texas Perpetual Pavement Design and Construction Guidelines

Details

• Alternative Title:
  Sustainable Perpetual Asphalt Pavements and Comparative Analysis of Lifecycle Cost to Traditional 20-Year Pavement Design [Project Title From Cover]
• Creators:
  Lee, Sang Ick ; Hu, Sheng ; Walubita, Lubinda F.
• Corporate Creators:
  Texas A&M Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Best Practices Guidelines Pavement Design Road Construction Subgrade (Pavements)
• Publication/ Report Number:
  0-6856-P1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas;United States
• Corporate Publisher:
  Texas A&M Transportation Institute
• Abstract:
  Since 2001, Texas has designed and constructed perpetual pavements on heavily trafficked highways. The perpetual pavement takes into account the increased structural demands due to heavy truck traffic, where cumulative one-direction traffic loading of more than 30 million 18-kip equivalent single axle loads (ESALs) over a 20–30 year design life is projected. By definition and unlike conventional flexible pavements, the perpetual pavements, also commonly known as full-depth asphalt pavements, are pavement structures designed to have a virtually infinite fatigue and full-depth rut life, requiring only periodic surface renewal for at least 50 years. To date, there are 10 perpetual pavement sections in service within Texas. Based on the Texas Department of Transportation (TxDOT) initial design, a typical structure of existing Texas perpetual pavement consists of the following: 22 in. total thickness hot mix asphalt (HMA) layers. • 8 in. thickness of lime or cement treated base layer. A well compacted in-situ subgrade layer. Based on the evaluation of global data related to perpetual pavement design, the Texas perpetual pavements required the thickest HMA layers while the perpetual pavement sections using thinner HMA layers than Texas show good field performance. Thus, the Texas perpetual pavement needs possibly significant improvement in material quality and thickness reduction for cost-effectiveness. This report documents the revised guidelines and recommendation for the design, construction, and performance evaluation of Texas perpetual pavement structures including structural thickness design, design software, construction practice, and performance evaluation strategies.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:406adda2b5121d89e73a6c2b07c99e2c014a13fe0cec81ffb2d94f1f44361ff65b9da63765f9b0ce2404dd0d7eaaabc02cf4635920cc619380c97c65f91a003e
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/57066/dot_57066_DS1.pdf
• File Type:
  [PDF - 2.41 MB ]