Light & Engineering 26 (2)

Volume 26
Date of publication 07/01/2018
Pages 88-94

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On Site Photometric Characterisation of Cement Concrete Pavements with COLUROUTE Device . L&E 26 (2) 2018

Articles authors:

Valerie Muzet

Ph.D., graduated in Sciences from the University of Strasbourg, France in 1997, works in Cerema, in the research team ENDSUM (Non Destructive Evaluation of Structures and Materials). Her main activities and fields of interests are 3D road imaging, road and marking photometry. She is involved since 15 years in the development of optical metrology devices applied to road characterization: Coluroute device for insitu evaluation of pavement photometric properties, the dynamic retroreflectometer Ecodyn for the characterization of the night visibility of road markings and the apparatus IRCAN Stereo for image acquisition and software IREVE for 3D measurement and exploitation for the knowledge of road network and surroundings. She is member of the CEN TC226 WG2 in the field of road marking, the CIE TC450: Road surface characterization for lighting application and the French lighting society (AFE). She leads the Cerema contribution of the European Empir project SURFACE

Abstract

The standard tool for characterizing road surface photometry is the reduced luminance coefficient table (or Rtable), as defined in the seventies by the CIE. Since these tables are no longer representative, measuring road photometry is necessary for optimizing a lighting installation and ensuring luminance level and uniformity. The objective of the study was to characterise and follow on site the photometric characteristics of different concretes with time and traffic. A first experiment was done with two concrete formulations (broomed and water jet scrubbed concrete) located around a much circulated concrete mixer plant. The photometric characterisation of these pavements was done with the portable reflectometer COLUROUTE device during three years. The selected surface treatment was applied in a tunnel and the photometric characteristics were measured during 30 months. It was shown that the concrete pavements are more diffuse and clear than classical pavements. Their use could generate significant energy saving.

References

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Keywords

concrete