Improve Modulus Determination Using Falling Weight Deflectometer

The primary objectives of this research are: (1) Characterize Seasonal Variations in Resilient Modulus: Utilize historical falling weight deflectometer (FWD) data to analyze and characterize the seasonal variations in the resilient modulus of pavement embankments. Investigate the influence of seasonal variations, particularly fluctuations in groundwater levels and moisture content, on resilient modulus by correlating FWD data with historical rainfall, geological data, and other relevant factors. (2) Enhance FWD Testing Protocols: Review and evaluate the current FWD-based procedure for calculating embankment Mr and investigate alternative methods to produce more accurate and comprehensive results. Review the frequency and timing of FWD testing to determine the most effective intervals for characterizing the embankment resilient modulus and capturing seasonal variations considering historical data, geological data, environmental conditions, and workload of data collection staff. Identify practical test lengths and other testing protocols that could improve the accuracy and efficiency of pavement assessments.

Language

• English

Project

• Status: Active
• Funding: $239,800.00
• Contract Numbers:

  BEI75

• Sponsor Organizations:

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Managing Organizations:

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Project Managers:

  Wang, Guangming

• Performing Organizations:

  Applied Research Associates, Inc.

  100 Trade Centre Drive, Ste 200
  Champaign, IL  United States  61820-7233
• Principal Investigators:

  Hyung, Lee

• Start Date: 20250506
• Expected Completion Date: 20261105
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Embankments; Falling weight deflectometers; Modulus of resilience; Moisture content; Pavements; Seasons; Test procedures
• Subject Areas: Geotechnology; Highways; Pavements; Planning and Forecasting;

Filing Info

• Accession Number: 01954980
• Record Type: Research project
• Source Agency: Florida Department of Transportation
• Contract Numbers: BEI75
• Files: RIP, STATEDOT
• Created Date: May 14 2025 10:13AM