A parametric evaluation of fundamental engineering properties for Louisiana hot mix : final report.

Details

• Alternative Title:
  A parametric evaluation of fundamental engineering properties for Louisiana hot mix.
• Creators:
  Mohammad, Louay N. ; Paul, Harold R. ; Raghavendra, Amar
• Corporate Creators:
  Louisiana Transportation Research Center
• Corporate Contributors:
  United States. Federal Highway Administration ; Louisiana. Dept. of Transportation and Development
• Subject/TRT Terms:
  Asphalt Concrete Asphalt Mixture Design And Characterization Creep Compliance Dynamic Modulus Hot Mix Asphalt Indirect Tension Strength And Strain Test Mix Design Modulus Of Resilience Properties Of Materials Resilient Modulus Tensile Strength Testing

  More +
• Publication/ Report Number:
  FHWA/LA-94/276
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  Historically, asphalt concrete has been designed and constructed using empirically developed criteria which has been based on static loading conditions. As loadings increase and stress distributions change due to increased tire pressures such criteria become insufficient to provide durable pavements. Recognizing this design deficiency, in 1986 AASHTO incorporated an engineering materials property, resilient modulus, into its design procedure. This and other time dependent stress-strain relationships are becoming imperative design parameters to provide cost efficient and durable highway pavements for today's changing conditions. Engineering characterization of Louisiana's asphalt concrete mixtures using the indirect tensile test has been the focus of a recent comprehensive research program sponsored by the Louisiana Transportation Research Center (LTRC).
  
  The objectives of this research study were to acquire a dynamic test system and to establish engineering materials properties in both static and dynamic modes for typical Louisiana hot mix.
  
  A fully automated servo-hydraulic MTS test system was acquired. Software for data acquisition and equipment control was developed to perform engineering characterization tests (i.e., indirect tensile strength test, indirect tensile resilient modulus, dynamic modulus test, indirect tensile and axial creep test, axial repeated load test, and dynamic modulus test) on asphaltic concrete mixtures. The influence of two levels of mixture type (low and high stability), three levels of asphalt cement sources, and three of compaction effort on the engineering properties measured from the indirect tension strength, resilient modulus, creep compliance, and dynamic modulus are presented. In addition, both a maintenance program for the MTS and training program for Louisiana Department of Transportation and Development (LADOTD) laboratory technicians in the operation of the MTS have been established.
  
  
• Format:
  PDF
• Funding:
  87-2B
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:86876e2585764ff4e7a140930fde402caf361046a07365404cc2866f2b3a030f1d8695158010845c4af45c16405840133be08a811d5adafa9f43605e77ef58d0
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/22245/dot_22245_DS1.pdf
• File Type:
  [PDF - 13.00 MB ]