In precipitation management, the emphasis was on the quick release of water. However, there was a side effect that the city was flooded and the water shortage occurred in the drought. Recently, low impact development (LID) techniques have been popularized in Seoul and Sejong City. Impact development...
In precipitation management, the emphasis was on the quick release of water. However, there was a side effect that the city was flooded and the water shortage occurred in the drought. Recently, low impact development (LID) techniques have been popularized in Seoul and Sejong City. Impact development is the development of a water cycle ecosystem in an unusually distorted city due to urbanization as much as possible before development. The planning techniques that take into account the water circulation system include storage tanks, infiltration trenches, penetration trenches, and drainage pavement. Among them, Porous asphalt is a typical low-impact development technique that can be considered in the road part.
In the case of dense-graded asphalt currently used for general pavement, the permeability is almost unexpected, and about 50% of the urban impervious surface is occupied by roads. Conversely, Porous asphalt has a porosity of 20% and is capable of draining approximately 5 mm to 15 mm per hour. If the dense-graded asphalt pavement can be replaced by Porous asphalt pavement, the impervious area of the city will be reduced. Also, Porous asphalt pavement has quite good performance as low noise pavement. it has a noise reduction effect of about 5db to 10db compared to a general pavement asphalt pavement. It also has the effect of lowering the incidence of traffic accidents and reducing night light reflection by preventing the hydroplaning.
Porous asphalt, which has many positive features, also has a weak point. As a result, the basic principle of Porous asphalt is high pore pavement. However, if rutting is caused by the vehicle and the pole is blocked or the pol is blocked by sediments such as scattered dust on the road surface, it becomes a fatal weakness that can not obtain the expected effects. The Porous asphalt pavement is about three times the price of general asphalt pavement, but it has a bad perception due to concerns such as pore clogging. In this study, rutting which can cause pore clogging was applied by wheel load through wheel tracking test. In addition, the experiment was carried out by describing similar phenomenon that the occlusion particles are evenly sprayed on the actual road surface. The permeability coefficient was measured according to the condition before rutting, the condition after rutting, the state before and after occlusion.
In precipitation management, the emphasis was on the quick release of water. However, there was a side effect that the city was flooded and the water shortage occurred in the drought. Recently, low impact development (LID) techniques have been popularized in Seoul and Sejong City. Impact development is the development of a water cycle ecosystem in an unusually distorted city due to urbanization as much as possible before development. The planning techniques that take into account the water circulation system include storage tanks, infiltration trenches, penetration trenches, and drainage pavement. Among them, Porous asphalt is a typical low-impact development technique that can be considered in the road part.
In the case of dense-graded asphalt currently used for general pavement, the permeability is almost unexpected, and about 50% of the urban impervious surface is occupied by roads. Conversely, Porous asphalt has a porosity of 20% and is capable of draining approximately 5 mm to 15 mm per hour. If the dense-graded asphalt pavement can be replaced by Porous asphalt pavement, the impervious area of the city will be reduced. Also, Porous asphalt pavement has quite good performance as low noise pavement. it has a noise reduction effect of about 5db to 10db compared to a general pavement asphalt pavement. It also has the effect of lowering the incidence of traffic accidents and reducing night light reflection by preventing the hydroplaning.
Porous asphalt, which has many positive features, also has a weak point. As a result, the basic principle of Porous asphalt is high pore pavement. However, if rutting is caused by the vehicle and the pole is blocked or the pol is blocked by sediments such as scattered dust on the road surface, it becomes a fatal weakness that can not obtain the expected effects. The Porous asphalt pavement is about three times the price of general asphalt pavement, but it has a bad perception due to concerns such as pore clogging. In this study, rutting which can cause pore clogging was applied by wheel load through wheel tracking test. In addition, the experiment was carried out by describing similar phenomenon that the occlusion particles are evenly sprayed on the actual road surface. The permeability coefficient was measured according to the condition before rutting, the condition after rutting, the state before and after occlusion.
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