Effect of Hysteresis of Soil-Water Characteristic Curve on Resilient Modulus of Subgrade Soil Under Different Climatic and Stress Conditions

This paper evaluated the hysteresis of the soil-water characteristic curve (SWCC) and its effect on the resilient modulus of the subgrade soil sampled from an experimental road in Hokkaido, Japan by conducting a series of laboratory tests. As an important mechanical characteristic that reflects the resistance of the pavement structure against cyclic loading, the resilient modulus is studied by many researchers. However, most existing studies of the resilient modulus do not consider the effect of the hysteresis of SWCC. To investigate the effect of the hysteresis phenomenon on the resilient modulus of the subgrade soil under various conditions, resilient modulus tests were conducted under different moisture conditions, wheel loading conditions, and temperature conditions along both the drying and wetting paths of the SWCC in this study. Furthermore, test results were fitted by predictive models to verify the applicability and to find an appropriate method to predict the resilient modulus of subgrade soil under various conditions.

• Record URL:
  https://annualmeeting.mytrb.org/OnlineProgram/Details/19183
• Supplemental Notes:
  • This paper was sponsored by TRB committee AKG40 Standing Committee on Mechanics and Drainage of Saturated and Unsaturated Geomaterials.
• Corporate Authors:

  Transportation Research Board

  ,    
• Authors:
  • Ren, Daoju
  • Ishikawa, Tatsuya
  • Si, Junling
  • Tokoro, Tetsuya
• Conference:
  • Transportation Research Board 102nd Annual Meeting
  • Location: Washington DC, United States
  • Date: 2023-1-8 to 2023-1-12
• Date: 2023

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 16p

Subject/Index Terms

• TRT Terms: Hysteresis; Modulus of resilience; Predictive models; Repeated loads; Soil water; Subgrade (Pavements)
• Geographic Terms: Hokkaido (Japan)
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 01874417
• Record Type: Publication
• Report/Paper Numbers: TRBAM-23-00296
• Files: TRIS, TRB, ATRI
• Created Date: Feb 23 2023 1:11PM