Idaho-Specific Correlation of Dynamic Cone Penetrometer (DCP) to Resilient Modulus (Mr)

This project builds on previous Idaho Transportation Department (ITD) research to develop Idaho-specific equations that more accurately correlate Dynamic Cone Penetrometer (DCP) penetration rates with Resilient Modulus (Mr) values for different soil types across the state. The DCP provides a simple, cost-effective method for collecting in-situ subgrade and base resilient modulus data to support pavement design. Reliable correlations will allow districts with limited geotechnical resources to design simpler roadway projects and validate laboratory testing for larger projects. Improved accuracy will help prevent over- or under-designed pavements, reducing costs and extending roadway service life.

Language

• English

Project

• Status: Programmed
• Funding: $100,000.00
• Contract Numbers:

  RP 333

• Sponsor Organizations:

  Idaho Transportation Department

  11331 W Chinden Blvd
  Boise, ID  United States  83714
• Project Managers:

  Nisson, Josh

• Start Date: 20270101
• Expected Completion Date: 20270101
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Cone penetrometers; Geotechnical engineering; Modulus of resilience; Pavement design
• Identifier Terms: Dynamic Cone Penetrometer
• Geographic Terms: Idaho
• Subject Areas: Design; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 01966074
• Record Type: Research project
• Source Agency: Idaho Transportation Department
• Contract Numbers: RP 333
• Files: RIP, STATEDOT
• Created Date: Sep 17 2025 4:28PM