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Water Science & Technology—WST Vol 60 No 7 pp 1787–1794 © IWA Publishing 2009 doi:10.2166/wst.2009.571

Pollutant load removal efficiency of pervious pavements: is clogging an issue?

N. Kadurupokune and N. Jayasuriya

School of Civil Environmental and Chemical Engineering, RMIT University, Melbourne, Australia E-mail: nilmini.kadurupokune@rmit.edu.au; nira.Jayasuriya@rmit.edu.au


ABSTRACT

Pervious pavements in car parks and driveways reduce the peak runoff rate and the quantity of runoff discharged into urban drains as well as improve the stormwater quality by trapping the sediments in the infiltrated water. The paper focuses on presenting results from the laboratory tests carried out to evaluate water quality improvements and effects of long-term decrease in infiltration rates with time due to sediments trapping (clogging) within the pavement pores. Clogging was not found to be a major factor affecting pervious pavement performance after simulating 17 years of stormwater quality samples.

Keywords: pervious pavement clogging; pervious pavements; stormwater infiltration; WSUD


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