Implementing the LWD for MoDOT Construction Acceptance of Unbound Material Layers: Phase II

Modulus-based quality assurance (QA) methods with Light-Weight Deflectometer (LWD) can easily measure the critical engineering properties of compacted soil in the field. The Phase I project has concluded that the LWD is a promising tool for construction acceptance evaluation of unbound material layers such as well graded sands and clay soils. However, limited number sites were tested since LWD could not be used on clay soil sites with much higher moisture content than optimum. In this Phase II project, more types of soils from different sites to develop representative testing specifications. The project will develop testing specification for field compaction QA using LWD. The existing testing procedure will also be simplified to improve the testing efficiency and will be ready to implement. In addition, the highway agency will obtain important data of resilient behavior of typical Missouri unbound materials from lab LWD on mold, lab triaxial test, and field LWD and significant influencing factors for future design, construction, and management.

• Record URL:
  https://tridurle.wsu.edu/implementing-the-lwd-for-modot-construction-acceptance-of-unbound-material-layers-phase-ii/

Language

• English

Project

• Status: Active
• Funding: $200000
• Contract Numbers:

  69A3551947137

• Sponsor Organizations:

  Transportation Infrastructure Durability & Life Extension

  Washington State University
  Civil & Environmental Engineering
  Pullman, Washington  United States  99164

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590

  Missouri Department of Transportation

  1617 Missouri Boulevard
  P.O. Box 270
  Jefferson City, MO  United States  65102
• Managing Organizations:

  Transportation Infrastructure Durability & Life Extension

  Washington State University
  Civil & Environmental Engineering
  Pullman, Washington  United States  99164
• Project Managers:

  Bruner, Britain

• Performing Organizations:

  Missouri University of Science & Technology, Rolla

  Department of Engineering
  202 University Center
  Rolla, MO    65409
• Principal Investigators:

  Zhang, Xiong

• Start Date: 20230701
• Expected Completion Date: 20240630
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers
• Subprogram: Transportation Infrastructure Durability and Life Extension

Subject/Index Terms

• TRT Terms: Compacted soils; Deflectometers; Quality assurance; Test procedures
• Subject Areas: Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 01899106
• Record Type: Research project
• Source Agency: National Center for Transportation Infrastructure Durability and Life-Extension
• Contract Numbers: 69A3551947137
• Files: UTC, RIP
• Created Date: Nov 14 2023 8:28PM