Intermediate temperature cracking in HMA : phase 1 semi-circular bending (SCB) practicality evaluation.

Details

• Alternative Title:
  Intermediate temperature cracking in hot mix asphalt : phase 1 semi-circular bending (SCB) practicality evaluation.
• Creators:
  VanFrank, Kevin ; VanMilligen, Mike ; Biel, Tim
• Corporate Creators:
  Construction Management Engineering Transportation Group (CMETG)
• Corporate Contributors:
  Utah. Dept. of Transportation. Research Division
• Subject/TRT Terms:
  • Temperature
  • Asphalt mixtures
  • Fracture mechanics
  • Rutting
  • Binder content
  • Cracking of asphalt concrete pavements
  • Hot mix asphalt
  • Fracture propagation energy
  • semi-circular bending
  • sample preparation
• Publication/ Report Number:
  UT- 17.01
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Utah
• Corporate Publisher:
  Utah. Dept. of Transportation. Research Division
• Abstract:
  The Utah Department of Transportation has implemented a program to test the rutting and moisture ; sensitivity of Dense Grade Asphalt. Under this program, asphalt mixes have become much harder and dryer in an ; effort to minimize rutting potential. The result of this program is the creation of mixes which are susceptible to ; cracking at intermediate and low temperatures. A test is being sought to help describe asphalt mix behavior in the ; temperature range above freezing but below softening. Louisiana State University has proposed a test to analyze the ; crack propagation energy in an asphalt mix using the semi-circular bending configuration. In this study, UDOT is ; evaluating this test procedure by setting up two test systems, creating a spreadsheet for data analysis and comparing ; the results of tests run on samples created in a single lab but performed in separate labs. The samples were created ; from a virgin mix design with increasing binder content but constant voids. Test results from one of the labs ranked ; the samples with increasing fracture propagation energy as binder content increased. Tests from the other lab ; provided an unexpected ranking with a scattering of results. Further evaluation is required to identify the causes of ; this anomaly.
  More +
• Format:
  PDF
• Funding:
  15-8541 ; Work Unit No. 5H07602H
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32202/dot_32202_DS1.pdf
• File Type:
  [PDF - 1.34 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:221eddebbde7ab1e3867f1b46e257be4c1fb7d791262e1cc37b016dd4342f6fa