Nuclear Gauge Calibration and Testing Guidelines for Hawaii

The Hawaii Department of Transportation requires that ASTM/AASHTO standards be followed for acceptance of in-place density and moisture of soil and soil-aggregate determined by nuclear gauge or sand cone methods. The nuclear gauge technique is widely used by consultants, government agencies and researchers since it allows for a quick and cost-effective way to determine total wet density and water content. However, adherence to ASTM/AASHTO requirements, particularly with regard to standardization, calibration and verification procedures, has been reported to be problematic in Hawaii by consultants and testing firms, especially those operating on the neighbor islands. This is probably due in part to the unique mineralogy of some of the local volcanic soils. Also, the presence of coarse-grained soils and use of the nuclear gauge near trench walls and other inhomogeneities causes difficulty in trying to meet ASTM/AASHTO precision requirements for density and moisture content. Furthermore, precision guidelines in the AASHTO/ASTM standards do not cover some of the most common types of native soils, such as highly weathered residual and colluvium soils (ML and MH).

Language

  • English

Project

  • Status: Active
  • Funding: $206075.00
  • Contract Numbers:

    54040

    HWY-L-2005-05

  • Sponsor Organizations:

    Federal Highway Administration

    300 Ala Moana Boulevard
    Honolulu, HI  United States  96850

    Hawaii Department of Transportation

    2530 Likelike Highway
    Honolulu, HI  United States  96817
  • Project Managers:

    Hee, Brandon

  • Performing Organizations:

    University of Hawaii, Manoa

    College of Engineering, Department of Civil and Environmental Engineering
    2540 Dole Street, Holmes Hall 383
    Honolulu, HI  United States  96822
  • Principal Investigators:

    Brandes, Horst

  • Start Date: 20060301
  • Expected Completion Date: 0
  • Actual Completion Date: 20090228
  • Source Data: RiP Project 12823

Subject/Index Terms

Filing Info

  • Accession Number: 01460454
  • Record Type: Research project
  • Source Agency: Hawaii Department of Transportation
  • Contract Numbers: 54040, HWY-L-2005-05
  • Files: RiP, USDOT, STATEDOT
  • Created Date: Jan 3 2013 1:25PM