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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

 
REPORT
This report is an archived publication and may contain dated technical, contact, and link information
Publication Number:  FHWA-HRT-12-068    Date:  December 2012
Publication Number: FHWA-HRT-12-068
Date: December 2012

 

Curl and Warp Analysis of The LTPP SPS-2 Site in Arizona

RECOMMENDATIONS

This report demonstrated the potential for isolating the effect of curl and warp from other sources of roughness in the study of long-term pavement performance due to the strong statistical relationship between changes in IRI and changes in PSG. This report also demonstrated that long-term increases in IRI may be caused solely by changes in curl and warp and do not necessarily indicate structural failure or increased surface distress. However, the statistical methods used in this study required a high volume of profile measurements. Refinement of the methods for more general applications with broader validity and less ambitious data requirements requires further study. The following investigations are recommended:

 

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