Effect evaluation of freeze-thaw on resilient modulus of unsaturated granular base course material in pavement

• Ishikawa, Tatsuya

• Lin, Tianshu

• Kawabata, Shinichiro

• Kameyama, Shuichi

• Tokoro, Tetsuya

Abstract

This study examines the effects of freeze-thaw and water content on the resilient deformation characteristics of subbase course materials to evaluate the mechanical behavior of granular base in cold regions. A series of resilient modulus tests on subbase course materials under various water contents were conducted using a newly developed test apparatus. Besides, the test results were compared with the results of freeze-thaw CBR tests and the long-term field measurement at a model pavement structure including FWD tests. As the results, it was revealed that the resilient deformation characteristics of unbound granular base materials (UGBMs) deteriorate due to freeze-thaw and increment of the water content in thawing season. This indicates that the freeze-thaw of granular base has a strong influence on the fatigue life of pavement structures.

Journal

• Transportation geotechnics

  Transportation geotechnics 21 100284-, 2019-12

  Elsevier

Keywords

• Base course
• Resilient deformation characteristics
• Unsaturated soil
• Freeze-thaw action
• Laboratory element test

Details

• CRID: 1050853257534740992
• NII Article ID: 120007173926
• DOI: 10.1016/j.trgeo.2019.100284
• HANDLE: 2115/83366
• ISSN: 22143912
• Web Site: https://api.elsevier.com/content/article/PII:S2214391219301916?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S2214391219301916?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN