2310 Using X-Ray Fluorescence to Assess Soil Subgrade Stabilization Competency During Construction Inspection

Currently, ODOT does not have the technology to assess subgrade stabilization content and distribution during construction, prior to pavement laying. Adequate subgrade stabilization is paramount to quality pavement performance. X-Ray Fluorescence (XRF) has been shown to accurately measure the amount of stabilization in soil and, when using proper sampling and testing protocols, can provide an excellent assessment of the spatial distribution of a soil additive. This information can be used to make recommendations to transportation officials on how to employ the portable handheld XRF (PHXRF) and implement laboratory XRF testing protocol on job-sites for quality control applications or during forensic investigations. This technology would help DOTs to more efficiently and effectively build subgrades that would last longer, require less maintenance, and lower the cost of roadway construction. In addition, PHXRF may be a viable solution in sulfate testing in soil subgrades and environmental applications. PHXRF can, potentially, serve several purposes on site, since sulfate detection changes any stabilization protocol because of the threat of ettringite formation.

    Language

    • English

    Project

    • Status: Active
    • Funding: $108,000
    • Contract Numbers:

      2310

      SPRY-0010(082)RS

    • Sponsor Organizations:

      Oklahoma Department of Transportation

      200 NE 21st Street
      Oklahoma City, OK  United States  73105
    • Managing Organizations:

      Oklahoma Department of Transportation

      200 NE 21st Street
      Oklahoma City, OK  United States  73105
    • Project Managers:

      Garland, Gregory

      Hook, Gary

    • Performing Organizations:

      University of Oklahoma, Norman

      School of Civil Engineering and Environmental Science
      202 West Boyd Street, Room 334
      Norman, OK  United States  73019
    • Principal Investigators:

      Cerato, Amy

    • Start Date: 20191001
    • Expected Completion Date: 20210930
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01722863
    • Record Type: Research project
    • Source Agency: Oklahoma Department of Transportation
    • Contract Numbers: 2310, SPRY-0010(082)RS
    • Files: RiP, STATEDOT
    • Created Date: Nov 19 2019 11:13AM