PREDICTING RUTTING IN UNBOUND GRANULAR BASECOURSES FROM LOADMAN AND OTHER IN SITU NON-DESTRUCTIVE TESTS

This paper describes comparative trials of four nondestructive tests (Loadman, Falling Weight Deflectometer, Nuclear Density Meter and Clegg Hammer) conducted at the Canterbury Accelerated Pavement Testing Indoor Facility (CAPTIF) in New Zealand. The tests were evaluated to determine their suitability for quantifying the condition of unbound granular pavements and predicting their future performance. The final pavement rut depths, which were due primarily to deformation in the unbound granular basecourse layer, after 6 million ESA, were compared with the values of the initial non-destructive tests (NDTs) done immediately after compaction. Regression and correlation analyses were performed on the data obtained. Loadman showed the best correlation between test results and pavement performance; for that and other reasons detailed in the paper, Loadman was found to be the most accurate, cost-effective testing device for quality control during compaction monitoring. Comments about the usability and relative performance of each device are also included. (a)

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 16-25
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00745969
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Mar 24 1998 12:00AM