CORRELATION OF FIELD PERFORMANCE TO HAMBURG WHEEL TRACKING DEVICE RESULTS

A 5-year research project was sponsored by the Texas Department of Transportation (TxDOT) to evaluate the laboratory-field correlation for the Hamburg Wheel Tracking Device (HWTD) equipment. This equipment measures the combined effects of rutting and moisture damage by rolling a steel wheel across the surface of an asphalt concrete slab that is immersed in hot water. The HWTD was developed in the 1970s by Esso A.G. of Hamburg, Germany. The HWTD has been gradually gaining acceptance by some state highway agencies within the last 5 years. The test results from this laboratory equipment have been promising in regard to evaluating the moisture susceptibility of hot mix asphalt (HMA) mixtures. While there is some information on the relationship between the laboratory results from this test and the field performance, it is quite limited. This 5 year research project will be an important step in validating the test and ensuring that the test results could be reliably used to predict performance. The research includes a sequence of pertinent tasks. Briefly, these include monitoring the construction of test sections, collection of construction data, performance data over a 5-year period, performance of laboratory tests using the HWTD, and analysis of the collected information. This first report presents the results and findings of the lab tests, and information collected on test sections in the first year of this research project.

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 69 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00988111
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-04/0-4185-1, Report No. 0-4185-1
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 28 2005 12:00AM