期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 169, 期 -, 页码 132-144出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2015.12.026
关键词
Clogging; Low impact development (LID); Pervious concrete; Porous asphalt; Permeable interlocking concrete pavers (PICP); Stormwater
资金
- National Oceanic and Atmospheric Administration
- Interlocking Concrete Pavement Institute
- Swedish Government Agency for Innovation Systems (VINNOVA)
- Swedish Research Council Formas
- Norrbottens forskningsrad
- University of New Hampshire (CFDA) from the National Oceanic and Atmospheric Administration [NA09NOS4190153, 11.419]
The surface infiltration rates (SIR) of permeable pavements decline with time as sediment and debris clog pore spaces. Effective maintenance techniques are needed to ensure the hydraulic functionality and water quality benefits of this stormwater control. Eight different small-scale and full-scale maintenance techniques aimed at recovering pavement permeability were evaluated at ten different permeable pavement sites in the USA and Sweden. Maintenance techniques included manual removal of the upper 2 cm of fill material, mechanical street sweeping, regenerative-air street sweeping, vacuum street sweeping, hand-held vacuuming, high pressure washing, and milling of porous asphalt. The removal of the upper 2 cm of clogging material did not significantly improve the SIR of concrete grid paves (CGP) and permeable interlocking concrete pavers (PICP) due to the inclusion of fines in the joint and bedding stone during construction, suggesting routine maintenance cannot overcome improper construction. For porous asphalt maintenance, industrial hand-held vacuum cleaning, pressure washing, and milling were increasingly successful at recovering the SIR. Milling to a depth of 2.5 cm nearly restored the SIR for a 21 year old porous asphalt pavement to like-new conditions. For PICP, street sweepers employing suction were shown to be preferable to mechanical sweepers; additionally, maintenance efforts may become more intensive over time to maintain a threshold SIR, as maintenance was not 100% effective at removing clogging material. 2015 Elsevier Ltd. All rights reserved.
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