Superhydrophobic Asphalt Pavements: Surface Improvement

The most adverse weather condition for road safety happens when there is water, snow, or ice on the road surface because their presence highly decreases friction. Therefore, it is essential to drain or repel them quickly. If the water drops are repelled from the surface or the ice/snow formation is...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 238; p. 12012
Main Authors Rocha Segundo, Iran, Landi, Salmon, Freitas, Elisabete, Castelo Branco, Verônica, Costa, Manuel F. M., Carneiro, Joaquim
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 2020
Subjects
Asphalt mixes
Asphalt pavements
Contact angle
Hydrophobic surfaces
Hydrophobicity
Ice formation
Polytetrafluoroethylene
Roads & highways
Silicon dioxide
Snow
Spraying
Surface roughness
Titanium dioxide
Traffic safety
Water drops
Weather
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Summary:The most adverse weather condition for road safety happens when there is water, snow, or ice on the road surface because their presence highly decreases friction. Therefore, it is essential to drain or repel them quickly. If the water drops are repelled from the surface or the ice/snow formation is avoided with the application of superhydrophobic coatings, roads become safer. In order to functionalize the asphalt mixtures used in road pavements, nano/micromaterials, such as Polytetrafluoroethylene (PTFE), TiO2, and SiO2, among others have been applied by spraying coating. The mixes are usually characterized by the water contact angle, and the surface roughness is typically assessed by optical and electron analysis. This research work aims to present a brief overview of superhydrophobic asphalt mixtures.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/202023812012