“…underlying soil) and the rainfall load on the system, which is determined by the intensity, duration and frequency of rainfall. Often the permeability of pavement subgrade soil materials (especially for clay soils) is relatively low (about 10 −5 cm s −1 ), and consequently it takes a relatively long time to completely drain the stormwater [43]. Therefore, a reservoir layer (usually made of granular materials with large air void content) with adequate thickness and capacity is required to store the stormwater giving it adequate time for it to drain into the ground.…”
Section: Permeability and Hydraulic Performance Of Permeable Pavementsmentioning
confidence: 99%
“…Therefore, a reservoir layer (usually made of granular materials with large air void content) with adequate thickness and capacity is required to store the stormwater giving it adequate time for it to drain into the ground. Simulation investigations conducted by UCPRC researchers indicated that full depth permeable pavements can provide adequate stormwater runoff volume storage for most climate regions and rain events in California, which typically involve slow steady rain over several days as opposed to thunder storms, without generating any overflow from pavements [43]. More details on the hydraulic performance and hydraulic design of permeable pavements can be found in [39,43].…”
Section: Permeability and Hydraulic Performance Of Permeable Pavementsmentioning
“…underlying soil) and the rainfall load on the system, which is determined by the intensity, duration and frequency of rainfall. Often the permeability of pavement subgrade soil materials (especially for clay soils) is relatively low (about 10 −5 cm s −1 ), and consequently it takes a relatively long time to completely drain the stormwater [43]. Therefore, a reservoir layer (usually made of granular materials with large air void content) with adequate thickness and capacity is required to store the stormwater giving it adequate time for it to drain into the ground.…”
Section: Permeability and Hydraulic Performance Of Permeable Pavementsmentioning
confidence: 99%
“…Therefore, a reservoir layer (usually made of granular materials with large air void content) with adequate thickness and capacity is required to store the stormwater giving it adequate time for it to drain into the ground. Simulation investigations conducted by UCPRC researchers indicated that full depth permeable pavements can provide adequate stormwater runoff volume storage for most climate regions and rain events in California, which typically involve slow steady rain over several days as opposed to thunder storms, without generating any overflow from pavements [43]. More details on the hydraulic performance and hydraulic design of permeable pavements can be found in [39,43].…”
Section: Permeability and Hydraulic Performance Of Permeable Pavementsmentioning
“…Overall, previous studies have demonstrated the benefit of PC in urban stormwater quantity management. The hydrologic efficacy of PC might be a function of climatic condition or geographical location besides magnitude of storm, surface porosity, pavement age and maintenance [10,11].…”
Abstract-Permeable pavement is a low impact development technology that has been suggested for improvement of urban stormwater management. Performance of permeable pavement has been extensively evaluated by field observations so far. However, modeling tools, which can aid in the design of permeable pavement, are still lacking, particularly in relation to water quality. Therefore, this paper aimed to develop effective modeling approaches to simulate porous concrete pavement, a common type of permeable pavement. To fulfill this objective, both field and laboratory investigations were conducted. An empirical model was developed using laboratory results and field observations, and a conceptual model was formulated based on the physical processes of pollutant removal by porous media. This paper focused on two water quality parameters: total suspended solids and total phosphorus. Both modeling approaches produced fairly good results, which suggest the potential use of both models in practice.
“…PFC layers also showed additional benefits including increased safety during rain events (3). In addition, a recent simulation study showed that the construction of full-depth permeable pavement (FDPP) shoulders for stormwater runoff management is technically feasible (4,5). Other recent studies have indicated that FDPP, with either concrete or asphalt surfaces, can contribute to reduction of localized heat island effects (6)(7)(8).…”
This study investigates the effect of permanent deformation on the permeability of different asphalt porous friction course (PFC) pavements with heavy vehicle simulator (HVS) testing. The testing was performed under controlled temperatures, speeds, and loads. HVS rutting tests were performed with single and dual wheels. Under dual-wheel loading, dust was added to one of the tire tracks to determine the impact of aerially deposited dust on surface clogging of permeable pavements. Permeability measurements were performed to evaluate clogging related to dust and permanent deformation. Measurements were made on each test section before and after HVS operation with both ASTM C1701 and the National Center for Asphalt Technology (NCAT) methods. Results obtained from this study showed that ( a) permeability measured by ASTM and NCAT methods were correlated, especially when a smaller ASTM ring was used, but generally the values measured by the ASTM method were larger than those by the NCAT method; ( b) sections with thinner PFC layers were more prone to clogging, with after-HVS permeabilities close to zero; ( c) the majority of reduction in permeability values (40% to 60%) occurred after about 2,000 repetitions (less than 6-mm downward rut depth) and in most cases the permeability was reduced to near zero after 5,000 to 30,000 repetitions; and ( d) the addition of dust particles (<38 μm) did not significantly change the permeability of PFC layers; this finding indicated that the loss of permeability was primarily because of permanent deformation accumulated during the HVS operation. For this reason, the rutting performance of PFC pavements should be considered to assess the long-term effectiveness of permeable pavements for stormwater runoff control and management.
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