Light depolarization as a measure of pavement surface texture
Abstract
The feasibility of using light depolarization to measure pavement surface textures was determined. A prototype vehicle-mounted depolarization measuring instrument was used. The wavelength that produces the highest correlation between the depolarization values and the conventional measurements was determined. It is indicated that improved correlations occur in the near infrared region. It is concluded that a vehicle mounted depolarization instrument can be constructed that will correlate satisfactorily with skid numbers or other textural measurements.
- Publication:
-
Final Report
- Pub Date:
- August 1981
- Bibcode:
- 1981vswc.rept.....S
- Keywords:
-
- Light (Visible Radiation);
- Optical Depolarization;
- Pavements;
- Surface Properties;
- Textures;
- Friction Measurement;
- Infrared Reflection;
- Infrared Spectra;
- Polarized Light;
- Skidding;
- Surface Roughness;
- Engineering (General)