Hydrologic Comparison of Four Types of Permeable Pavement and Standard Asphalt in Eastern North Carolina.pdf

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1、HydrologicComparisonofFourTypesofPermeablePavementandStandardAsphaltinEasternNorthCarolina123KellyA.Collins,S.M.ASCE;WilliamF.Hunt,P.E.,M.ASCE;andJonM.HathawayAbstract:ApermeablepavementparkinglotineasternNorthCarolinaconsistingoffourtypesofpermeablepavementandstanda

2、rdasphaltwasmonitoredfromJune2006toJuly2007forhydrologicdifferencesinpavementsurfacerunoffvolumes,totaloutßowvolumes,peakßowrates,andtimetopeak.Thefourpermeablesectionswereperviousconcrete
PC,twotypesofpermeableinterlockingconcretepavement
PICPwithsmall-sizedaggreg

3、ateinthejointsandhaving12.9%
PICP1and8.5%
PICP2opensurfacearea,andconcretegridpavers
CGPÞlledwithsand.Thesitewaslocatedinpoorlydrainedsoils,andallpermeablesectionswereunderlainbyacrushedstonebaselayerwithaperforatedunderdrain.AllpermeablepavementssigniÞcantlyreduc

4、edsurfacerunoffvolumesandpeakßowratesfromthoseofasphalt
p
0.01.Ofthepermeablepavements,CGPgeneratedthegreatestsurfacerunoffvolumes
p
0.01.ThePICP1andCGPcellsgeneratedsigniÞcantlylowertotaloutßowvolumesthanallothersectionsevaluated
p
0.01,andhadthelowestpeakßowsand

5、thelongesttimetopeak.TheresponseofthePICP1cellwaslikelyduetoanincreasedbasestoragevolumeresultingfromanelevatedpipeunderdrainwhereastheCGPcellresponsewasattributedtowaterretentioninthesandÞlllayer.Overall,differentpermeablepavementsectionsperformedsimilarly,butweresu

6、bstantiallydifferentfromasphalt.SubtledifferencesintheperformanceofCGPwereprimarilyduetothecharacteristicsofthesandÞlledmediacomparedtosmallaggregatetypicallyusedinPCandPICPjointsandbedding.DOI:10.1061/
ASCE1084-0699
200813:12
1146CEDatabasesubjectheadings:Stormwa

7、termanagement;Runoff;Hydrology;Pavements;Peakßow;BestManagementPractice;NorthCarolina;Parkingfacilities.IntroductionfoundtobelargelydependentonthepercentofsurfaceopeningsandtheparticlesizedistributionoftheaggregatejointÞllingandPermeablepavementsareregardedasaneffect

8、ivetoolinmanag-beddingmaterial
Andersenetal.1999;JamesandShahin1998.ingstormwater.Whencomparedtotraditional,imperviousas-Alaborato