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Titel Pothole-Free Fiber Reinforced Asphalt Mixture and Pothole Detection System
Manage Highway and Transportation Research Instiute Date 2017.04.19 Hit 1,807

 

Pothole-Free Fiber Reinforced Asphalt Mixture and Pothole Detection System

Project Leader: Yoo, Pyeong Jun (Research Fellow / pjyoo@kict.re.kr)

 

■ Overview


KICT is developing asphalt mixtures to improve road performance against traffic load and environmental load, as well as video-based pothole detection systems. The aim is to reduce the occurrence of road damage in the form of potholes, etc., which pose a risk to safe passage along roads, and to detect such damage early on and notify road management personnel.


The “fiber reinforced asphalt mixture” developed is an asphalt road paving material in which the durability performance of conventional asphalt mixtures has been substantially improved. This technological advance is the first road paving material technology that utilizes glass fiber. The pothole detection accuracy of the video-based pothole detection system has been elevated to 85%, making it practical for use in field systems for pothole management.

 

The fiber-reinforced asphalt mixture in 3D
 The fiber-reinforced asphalt mixture in 3D

 

■ Background and necessity of the study

While the number of new roads being built in Korea is decreasing, the lengths of road requiring maintenance and repair are continuing to increase. This is raising the need for roads with extended service life. There have been calls for the adoption of new asphalt mixtures that are both economic and durable, as well as the means of managing such new mixtures. This will also deal with the threat to drivers and vehicle safety posed by potholes, and the massive costs in road maintenance and repair that they require. The present study has developed two types of technology. The first technology developed was a road paving material that provides improved durability performance against traffic load and environmental load while minimizing the occurrence of potholes. The second technology involves the development of a small device similar to a vehicle black box that detect irregular potholes through video and provides real-time information on road sections requiring emergency repair and restoration to road management personnel.

 
Video-based pothole detection algorithm
Video-based pothole detection algorithm

 

■ Research details

To develop road paving materials that will minimize the occurrence of potholes, the glass fiber and the waste powder generated during the production was used to develop a fiber reinforced road (asphalt) paving material with substantially enhanced durability. To maximize the reinforcement performance of the mixture and the mix efficiency during production, 2 types of reinforcing material including plastic resin-coated glass fiber and aggregate-type glass fiber granules were developed. This was followed by a mixture performance evaluation study.  Go detect pothole damage on actual roads, a video-based pothole detection algorithm was developed. By developing a small, vehicle black box-type embedded video device, real-time detection of potholes on the road surface can be realized.
 
 
 
 
■ Research achievements

The harmless reinforced road (asphalt) paving material is a highly durable road (asphalt) packaging material whose durability is at least 1.5 times that of generic road (asphalt) packaging materials. Thanks to its high durability, this newly developed asphalt mixture can play a major role in preventing potholes, which are a chronic problem of existing asphalt-paved roads. In addition, a video-based pothole detection device was developed, and the achievements of the research are as follows.

● 2 counts of fiber reinforced asphalt technology transfer. Contract signed for video-based pothole detector (150 million won in royalties).
● Fiber reinforced asphalt used in 8 domestic road construction sites (3 national highways, 4 expressways, 1 municipal road in Seoul)
● Fiber reinforced asphalt used in 8 domestic road construction sites (1 site on Hunwu Expressway, Yanji, China, 2 sites on Ulaan Baatar, Mongolia, 1 site in Phnom Penh, Cambodia) 
● 1 count of field evaluation of video-based pothole detector equipment (on roads in Seoul)
● 10 SCI and SCIE journal articles and 20 media articles
● 9 Korean patents and 1 international (U.S.A., China) patent pending

 

 Video-based pothole detection equipment

Video-based pothole detection equipment

Video-based pothole detection equipment

 

■ Expected benefits


The fiber reinforced asphalt mixture technology developed in the present study enhances the durability of normal asphalt road paving to reduce the cross-sectional thickness of road paving. This also reduces the frequency of required maintenance, bringing down construction and maintenance costs. Through the development of a plastic resin-coated glass fiber aggregate and powder filler material to replace natural aggregates and stone powder filler materials, it is expected that the study will promote resource recycling. This technology, which represents the first attempt in the world to produce an asphalt mixture reinforced with glass fiber, has proven superior performance enhancements equivalent to existing, costly polymer-modified asphalts. It is expected to give Korea a competitive advantage in the international high-performance asphalt mixture market, helping the nation become a pioneer in related technologies.


The video-based pothole detection technology developed together with fiber reinforced asphalt mixture technology can contribute to accelerating decision-making relating to road repairs and the accurate quantification of road repair work volume. This will only be possible if it is commercialized and adopted by road management authorities or local governments. It is also expected that the video-based pothole detection technology will help to reduce damage from traffic accidents caused by potholes.

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