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Macrotexture Assessment of Florida Pavements
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2021-02-01
[PDF-8.24 MB]
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Edition:March 2019 – February 2021
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Abstract:Regular statewide macrotexture assessments are important for identifying hydroplane safety concerns on roadways. Traditionally, vehicle-mounted point-laser devices have been used by the Florida Department of Transportation (FDOT) State Materials Office to measure network-level macrotexture in accordance with the ASTM E1845 test standard. These point-laser systems are capable of accurately measuring mean profile depth (macrotexture) on flexible pavement; however, the point-laser system fails to completely capture the surface characteristics of rigid pavement, whose longitudinal texture is anisotropic. To overcome this limitation, two line-laser systems were purchased by the State Materials Office which have the capability of producing a nearly continuous three-dimensional (3-D) texture profile along the surface of a roadway. Preliminary testing carried out by the State Materials Office had shown that the line-laser system was producing mean profile depth values that did not correlate well with accepted reference values. Therefore, the University of North Florida developed a more comprehensive and systematic research plan to validate and implement a vehicle-mounted line-laser system into future network-level macrotexture assessments.
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