Measurement of Reflectance Properties of Asphalt using Photographical Methods

Catalin Daniel Galatanu (1) , Laurent Canale (2, 3)

1 TUIASI - "Gheorghe Asachi" Technical University of Iasi
2 LAPLACE-LM - Lumière et Matière
3 LAPLACE - LAboratoire PLasma et Conversion d'Energie

Measurement of reflectance properties of asphalt is an insufficiently addressed problem, although this parameter is involved in three major directions in which the development of roads and lighting takes place: new technologies for materials, including solar energy harvesting, energy efficiency of road lighting and light pollution reduction. For each of these directions, concerns for improving performance have been identified, in which for each percentage gained, significant efforts and costs are registered. It is thus shown that although the reflectance properties of asphalt can change the results to a large extent (even 47%), this parameter is considered as a material constant and is not measured, although it is variable over time. After evaluating some landmarks regarding the geometric domain for which this parameter must be measured, a photographic method is presented and exemplified by which the desired values can be obtained in-situ conditions.

Mots clés: EN 13201; Reduced Luminance Coefficient; Asphalt albedo; Luminance map; Reflectance uncertainty; street lighting; light pollution

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Génie des procédés; Optique / photonique; Energie électrique; Micro et nanotechnologies/Microélectronique

Catalin Daniel Galatanu, Laurent Canale. Measurement of Reflectance Properties of Asphalt using Photographical Methods. 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), Jun 2020, Madrid, Spain. pp.1-6, ⟨10.1109/EEEIC/ICPSEurope49358.2020.9160776⟩. ⟨hal-02912911⟩