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Road Asphalt Pavements Analyzed by Airborne Thermal Remote Sensing: Preliminary Results of the Venice Highway

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ABSTRACT

This paper describes a fast procedure for evaluating asphalt pavement surface defects using airborne emissivity data. To develop this procedure, we used airborne multispectral emissivity data covering an urban test area close to Venice (Italy).For this study, we first identify and select the roads' asphalt pavements on Multispectral Infrared Visible Imaging Spectrometer (MIVIS) imagery using a segmentation procedure. Next, since in asphalt pavements the surface defects are strictly related to the decrease of oily components that cause an increase of the abundance of surfacing limestone, the diagnostic absorption emissivity peak at 11.2μm of the limestone was used for retrieving from MIVIS emissivity data the areas exhibiting defects on asphalt pavements surface.The results showed that MIVIS emissivity allows establishing a threshold that points out those asphalt road sites on which a check for a maintenance intervention is required. Therefore, this technique can supply local government authorities an efficient, rapid and repeatable road mapping procedure providing the location of the asphalt pavements to be checked.

No MeSH data available.


Example of an asphalt pavement of the study area with surfacing limestone granules.
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f3-sensors-08-01278: Example of an asphalt pavement of the study area with surfacing limestone granules.

Mentions: In Italy road paving asphalts are made of a mixture of mineral aggregate (mainly of silicates and limestone granules) and bitumen [2]. Asphalt pavements surface defects [67] are strictly related to the decrease of the oily components of the bitumen, thus increasing the surface abundance of the limestone granules (see Figure 3). Therefore, for this study we chose the outcrop of the limestone granules, which certainly highlights distressed paving asphalts, as an indicator for those asphalt pavements to be checked for maintenance.


Road Asphalt Pavements Analyzed by Airborne Thermal Remote Sensing: Preliminary Results of the Venice Highway
Example of an asphalt pavement of the study area with surfacing limestone granules.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3927529&req=5

f3-sensors-08-01278: Example of an asphalt pavement of the study area with surfacing limestone granules.
Mentions: In Italy road paving asphalts are made of a mixture of mineral aggregate (mainly of silicates and limestone granules) and bitumen [2]. Asphalt pavements surface defects [67] are strictly related to the decrease of the oily components of the bitumen, thus increasing the surface abundance of the limestone granules (see Figure 3). Therefore, for this study we chose the outcrop of the limestone granules, which certainly highlights distressed paving asphalts, as an indicator for those asphalt pavements to be checked for maintenance.

View Article: PubMed Central - PubMed

ABSTRACT

This paper describes a fast procedure for evaluating asphalt pavement surface defects using airborne emissivity data. To develop this procedure, we used airborne multispectral emissivity data covering an urban test area close to Venice (Italy).For this study, we first identify and select the roads' asphalt pavements on Multispectral Infrared Visible Imaging Spectrometer (MIVIS) imagery using a segmentation procedure. Next, since in asphalt pavements the surface defects are strictly related to the decrease of oily components that cause an increase of the abundance of surfacing limestone, the diagnostic absorption emissivity peak at 11.2μm of the limestone was used for retrieving from MIVIS emissivity data the areas exhibiting defects on asphalt pavements surface.The results showed that MIVIS emissivity allows establishing a threshold that points out those asphalt road sites on which a check for a maintenance intervention is required. Therefore, this technique can supply local government authorities an efficient, rapid and repeatable road mapping procedure providing the location of the asphalt pavements to be checked.

No MeSH data available.