Pavement structures are designed, constructed, and maintained to support traffic loadings and to minimize the impact of climatic factors on pavement performance. However, variation in environmental factors such as surface temperature and moisture content can result in changes in pavement material properties and impact performance. For asphalt pavement layers, the most significant environmental factor influencing performance is temperature, and for jointed plain concrete pavements, it is temperature and moisture gradients between the top and the bottom of the slab.
NCHRP Web-Only Document 416: LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements, from TRB's National Cooperative Highway Research Program, presents the development of an approach to adjust falling weight deflectometer measurements to account for changes in temporal and diurnal temperature and moisture conditions for asphalt pavements and to evaluate longitudinal profile measurements to account for curl and warp of jointed plain concrete pavements.
National Academies of Sciences, Engineering, and Medicine. 2024. LTPP Data Analysis: Improving Use of FWD and Longitudinal Profile Measurements. Washington, DC: The National Academies Press.
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