Infrared reflectance factor of various asphalts

Baumgärtner, A.; Amann, Simon; Müller, Christoph; Herkommer, Alois; Dressel, Martin; Fella, Sina

doi:10.1117/12.2325509

Cited by 1 publication

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Energy efficiency is also obtained by considering natural lighting during twilight, which changes the time and manner of connecting artificial lighting [10]. After finding that natural lighting is isotropic (after sunset, when the sky is still bright), it reaffirms what was actually known, that artificial lighting is anisotropic, thus contradicting the statement that asphalt is perfectly diffuse, from [4].…”

Section: B Promoting Energy Efficiency and Reflectance Factormentioning

confidence: 63%

“…In other research concerning global warming and infrared asphalt response [4] one discover the confirmation that the various types of asphalt have responded very differently to each other, depending on composition (structure) and wear or age. An important conclusion in [4] is that "the dependence of the diffuse reflectance factor on the light spot size, in order to determine a minimum light spot size for any further optical study. By comparing the BRF (bidirectional reflectance factor) to a nearly-Lambertian Spectralon® white standard", the conclusions are that the asphalt is in general a good diffuse scatterer.…”

Section: A Harvesting Solar Energy and Reflectance Factormentioning

confidence: 93%

See 1 more Smart Citation

Measurement of Reflectance Properties of Asphalt using Photographical Methods

Gălățanu

Canale

2020

2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Syst

View full text Add to dashboard Cite

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 insitu conditions.

show abstract

Section: B Promoting Energy Efficiency and Reflectance Factormentioning

confidence: 63%

Section: A Harvesting Solar Energy and Reflectance Factormentioning

confidence: 93%