Evaluation of hot mix asphalt moisture sensitivity using the Nottingham Asphalt test equipment : final report, March 2010.

Details

• Creators:
  Williams, R. Christopher ; Breakah, Tamer M.
• Corporate Creators:
  Iowa State University. Institute for Transportation
• Corporate Contributors:
  Iowa. Highway Research Board ; Iowa. Dept. of Transportation
• Subject/TRT Terms:
  • Soil compaction
  • Soil compaction test
  • Dynamic tests
  • Soils by moisture content or potential
  • Asphalt pavements
  • Moisture meters
  • Stripping (Pavements)
  • Hot mix asphalt
  • Pavements, Asphalt--Testing
• Publication/ Report Number:
  IHRB Project TR-555 ; InTrans Project 06-251
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Edition:
  Final report
• Corporate Publisher:
  Iowa. Dept. of Transportation
• Abstract:
  Pavements are subjected to different stresses during their design lives. A properly designed pavement will perform adequately during its ; design life, and the distresses will not exceed the allowable limits; however, there are several factures that can lead to premature ; pavement failure. One such factor is moisture sensitivity. ; AASHTO T 283 is the standard test used in the moisture susceptibility evaluation of asphalt mixtures, but the results of the test are not ; very representative of the expected behavior of asphalt mixtures. The dynamic modulus test measures a fundamental property of the ; mixture. The results of the dynamic modulus test can be used directly in the Mechanistic-Empirical Pavement Design Guide (MEPDG) ; and are considered a very good representation of the expected field performance of the mixture. Further research is still needed to study ; how the dynamic modulus results are affected by moisture. The flow number test was studied in previous research as a candidate test for ; moisture-susceptibility evaluation, but the results of that research were not favorable. ; This research has four main objectives. The first objective of this research is to evaluate the usefulness of the dynamic modulus and flow ; number tests in moisture-susceptibility evaluation. The second objective is to compare the results to those achieved using the AASHTO ; T 283 test. The third objective is to study the effect of different methods of sample conditioning and testing conditions. The fourth ; objective of the research is to study the variability in the test results.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17867/dot_17867_DS1.pdf
• File Type:
  [PDF - 3.92 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:f85ea5631b2e8f8237275748a7cdd5b01eb81beddf22063a3acf6c7fd3478e70