Abstract
Pervious Pavements System (PPS) have been shown to possess a wide range of properties to effectively manage stormwater at source. The most popular PPS structure used in the UK and Spain consists of a permeable surface made of different materials such as interlocking concrete blocks, porous concrete, porous asphalt and reinforced grass, a base layer of aggregates, a sub-base layer of
gravel, and an intermediate layer of geotextile between the base and the sub-base layer. This paper reports on an investigation of the properties of a novel structure called OASIS® which was designed at Coventry University as an enhancement of the commercially available geotextiles when incorporated
in the PPS. The impact of OASIS® on the hydraulic behaviour of a PPS was analyzed through the study of infiltration rate, throughout the PPS and time required to reach the steady-state stage behaviour of the water within the PPS, under extreme rainfall intensities of 100 mm/hr, 200 mm/hr and 400 mm/hr, corresponding to a 100-year return period rainfall over duration of 15 minutes in different parts of the world. The result indicated that OASIS® provides an extra benefit when incorporated in PPS, delaying peak flow of a rainfall event by retaining and storing great volumes of water within its structure. These additional benefits are especially relevant under extreme rainfalls.
gravel, and an intermediate layer of geotextile between the base and the sub-base layer. This paper reports on an investigation of the properties of a novel structure called OASIS® which was designed at Coventry University as an enhancement of the commercially available geotextiles when incorporated
in the PPS. The impact of OASIS® on the hydraulic behaviour of a PPS was analyzed through the study of infiltration rate, throughout the PPS and time required to reach the steady-state stage behaviour of the water within the PPS, under extreme rainfall intensities of 100 mm/hr, 200 mm/hr and 400 mm/hr, corresponding to a 100-year return period rainfall over duration of 15 minutes in different parts of the world. The result indicated that OASIS® provides an extra benefit when incorporated in PPS, delaying peak flow of a rainfall event by retaining and storing great volumes of water within its structure. These additional benefits are especially relevant under extreme rainfalls.
Original language | English |
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Publication status | Published - 27 Jun 2013 |
Event | 8th International Conference NOVATECH: Planning & technologies for sustainable urban water management - Lyon, France, Lyon, France Duration: 23 Jun 2013 → 27 Jun 2013 |
Conference
Conference | 8th International Conference NOVATECH |
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Abbreviated title | NOVATECH 2013 |
Country/Territory | France |
City | Lyon |
Period | 23/06/13 → 27/06/13 |