Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
|This report is an archived publication and may contain dated technical, contact, and link information|
Publication Number: FHWA-RD-98-085
PDF files can be viewed with the Acrobat® Reader®
The use of Falling Weight Deflectometers (FWDs) to provide input to pavement structural designs and rehabilitations has become common, and is expected to increase with the upcoming release of the 2002 Pavement Design Guide.
Because the deflection response of asphalt layers in a pavement structure to loads is strongly influenced by temperature, methods to calculate representative pavement temperatures and temperature correction factors are critical. This guide presents such methods developed using LTPP data. The formal report by FHWA upon which this guide is based is available here in PDF format (Part 1, Part 2).
Click here to begin using the guide.
In addition, an MS Excel 2000 spreadsheet has been developed that implements all of the methods described in the document as functions (you may have to adjust your security settings in order to run these functions). The source code is also available, and should be easy to implement in other environments. The data sets used to develop these functions can also be downloaded.