Characterization of asphalt treated base course material

Details

• Creators:
  Liu, Juanyu ; Li, Peng
• Corporate Creators:
  Alaska University Transportation Center ; Alaska. Dept. of Transportation. Research, Development, and Technology Transfer
• Subject/TRT Terms:
  • Bituminous bases
  • Base course (Pavements)
• Publication/ Report Number:
  FHWA-AK-RD-10-07
• Resource Type:
  Tech Report
• Geographical Coverage:
  Alaska
• Corporate Publisher:
  Alaska University Transportation Center
• Abstract:
  Asphalt-treated bases are often used in new pavements; the materials are available and low-cost, but there is little data on how these materials perform in cold regions. ; This study investigated four ATB types (hot asphalt, emulsion, foamed asphalt, and reclaimed asphalt pavement) popular for treating base course materials. The research ; team collected data on stiffness, fatigue, and permanent deformation characteristics under different temperatures. This study produced a detailed literature review, ; including information from ongoing research projects, to compile the latest information concerning ATB characterization. Also completed were resilient modulus tests of ; ATB material commonly used for Alaska’s northern and central regions, as well as rutting tests using a Georgia Loaded Wheel Test apparatus. Researchers conducted ; resilient modulus tests on specimens of foamed asphalt-treated base material, fabricated in ADOT&PF labs, in all three Alaska regions; an additional test was performed ; in the central region using different binder contents and soaked conditions. Statistical analysis of the effects of aggregate properties on the resilient modulus were ; completed and incorporated into the finalized model. Study recommendations noted that based on the predicting equations for resilient modulus (MR), the moduli of ; treated base course materials can be calculated according to treatment technique, ambient temperature, aggregate properties, and binder content.
• Format:
  PDF
• Funding:
  FHWA-AK-RD-10-07 ; AUTC#107049 ; DTRT06-G-0011 ; T2-06-09
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25374/dot_25374_DS1.pdf
• File Type:
  [PDF - 1.62 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:77b4ca470a6300ffad9300ee7b7006e31813a98c8ae73517892cc27d45e8e5c35f04f7009eb8aa4fe458e16f2c23a9f1e3d539fd0349c3a88293a07a6313dda7