Abstract

Permeable pavement, as a sustainable infrastructure material can promote hydrologic restoration, particulate matter (PM) and solute control. However, filtration and commensurate clogging are two aspects of continued interest and discussion. This study quantifies filtration and clogging of cementitious permeable pavement (CPP) for loadings from 50 to 200 mg/L of hetero-disperse sandy-silt PM. The CPP mix design provides a hetero-disperse pore size distribution (PSD)pore, effective porosity (4e) of 24% and median pore size of 658 mm with a standard deviation of 457 mm. The PM mass separation across the entire particle size distribution (PSD)PM exceeds 80%; with complete separation for PM greater than 300 mm and 50% separation for suspended PM. Turbidity is reduced (42e95%), and effluent is below 10 NTU in the first quartile of a loading period. Permeable pavement illustrates reductions in initial (clean-bed) hydraulic conductivity (k0) with loading time. For all PM loadings, k0 (3.1 101 mm/s) was reduced to 104 mm/s for runoff loading durations from 100 to 250 h, respectively. Temporal hydraulic conductivity (k) follows exponential profiles. Maintenance by vacuuming and sonication illustrate that 96e99% of k0 is recovered. Permeable pavement constitutive properties integrated with measured PM loads and a year of continuous rainfall-runoff simulation illustrate k reduction with historical loadings. Study results measure and model filtration and hydraulic conductivity phenomena as well as maintenance requirements of permeable pavement directly loaded by urban drainage

Autore Pugliese

• Ranieri Vittorio

Tutti gli autori

• J.SANSALONE , S. KUANG , G. YING , RANIERI V

Titolo volume/Rivista

WATER RESEARCH

Anno di pubblicazione

2012

ISSN

0043-1354

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

20

Ultimo Aggiornamento Citazioni

2017-04-22 03:20:59

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile