Development of a Moisture Sensitivity Test for Asphalt Mixtures [Technical Summary]

Details

• Creators:
  Mohammad, Louay N.
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  Asphalt Mixtures Freeze Thaw Tests Laboratory Tests Moisture Content Moisture Damage Stress Tests (Equipment) Test Procedures
• Publication/ Report Number:
  712, DOTLT1000275, 19-2B
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Edition:
  Technical Summary
• Contracting Officer:
  Cooper, Samuel B III
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  Moisture-induced damage in asphalt pavements poses a significant concern for road agencies, affecting both long-term performance and driving safety. Most road agencies have relied on the Modified Lottman (ML) test, following the AASHTO T 283 standard, to assess the moisture susceptibility of asphalt mixtures. However, researchers have questioned the reliability of this test and its ability to accurately simulate moisture damage in the field. Although the Hamburg Wheel-Tracking (HWT) test, following the AASHTO T 324 standard, shows more reliability, it also has limitations. The “pass/fail” criteria based solely on rutting depth may not fully capture the complex nature of moisture-induced damage in the field. Further, the ability of the HWT test to simulate field moisture damage conditions and predict moisture sensitivity for a wide range of mixtures is limited.
• Format:
  PDF
• Funding:
  TT-Fed/TT-Reg - 6
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4289366a34e3f367a5dd992b082553c4d0230ac635a00cfc561e6f4670ef81df45dae61382c1b14dfd43e593b657f52a2cf9734b83c98e91b64477411e42a455
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85685/dot_85685_DS1.pdf
• File Type:
  [PDF - 163.21 KB ]