LTPP Data Analysis: Advancement of Profile-Based Curl and Warp Analysis Using LTPP Profile Data

NCE is working with the University of Michigan to advance the innovative method for calculating curl and warp from measured longitudinal profile demonstrated in the study of a PCC Long Term Pavement Performance (LTPP) project in Arizona (http://www.fhwa.dot.gov/publications/research/infrastructure/pavements/ltpp/12068/), and for estimating the portion of roughness that can be attributed to curl and warp each time the profile is measured.  This methodology permits the study of roughness progression over a long monitoring history without the confounding influence of short-term changes in roughness.  In addition,  the potential for expanding the utility of FWD data with regards to curl and warp will also be explored.  Any strong relationships demonstrated will add a new tool to pavement designers’ toolboxes.