Effect of Slope on Stormwater Infiltration into Porous Asphalt Pavements

Porous asphalt pavements and water-retentive asphalt pavements are widely used because of their ability to infiltrate both rainfall and stormwater runoff. There is very limited information available to assist designers of porous asphalt pavement systems to be installed on sloping sub-catchments. Thi...

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Vydáno v:Sustainability Ročník 16; číslo 2; s. 589
Hlavní autoři: Yang, Qiuxia, Hu, Jiaxuan, Beecham, Simon
Médium: Journal Article
Jazyk:angličtina
Vydáno: Basel MDPI AG 01.01.2024
Témata:
Artists
Asphalt pavements
Costs
Grain size
Infiltration (Hydrology)
Permeability
Porosity
Rain
Rain and rainfall
Runoff
Stormwater
Temperature effects
Urban heat islands
China
ISSN:2071-1050, 2071-1050
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Shrnutí:Porous asphalt pavements and water-retentive asphalt pavements are widely used because of their ability to infiltrate both rainfall and stormwater runoff. There is very limited information available to assist designers of porous asphalt pavement systems to be installed on sloping sub-catchments. This is because the infiltration performance of these systems has only been investigated experimentally for horizontal pavements, and their performance on sloping terrains has only been investigated theoretically. This experimental study investigates the relationship between rainfall intensity, pavement slope, runoff and infiltration rates for dense-graded asphalt, porous asphalt and water-retentive asphalt concrete pavements. Three rates of simulated rainfall were applied to porous, water-retentive and dense-graded asphalt specimens set at three different pavement slopes, namely 0°, 3° and 5°. The relationship between the porosity and permeability of the porous asphalt pavements was also determined. A porosity of 20% resulted in a permeability of greater than 1 mm/s. It was found that the porous asphalt specimens had excellent runoff retention and infiltration rates at all slopes. The water-retentive asphalt specimens also produced good infiltration rates at horizontal slopes, but these decreased at higher pavement slopes.
Bibliografie:ObjectType-Article-1
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ISSN:2071-1050
2071-1050
DOI:10.3390/su16020589