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Surface Infiltration Rate of Permeable Pavements

Eban Bean, William F. Hunt III and David Bidelspach (2005)
North Carolina A&T State University
DOI: https://doi.org/10.14796/JWMM.R223-22
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Abstract

Asphalt surfaces have greatly increased the amount of pollutant-carrying runoff entering surface waters. To counteract this, permeable pavement can be installed to allow water to infiltrate, thus reducing runoff and acting as a filter. This study tested the surface infiltration rate of 27 permeable pavement sites in North Carolina, Maryland and Delaware. One of these sites in North Carolina was monitored to compare pollutant loads of asphalt runoff to those in infiltrate. Concrete grid pavers (CGP) and permeable interlocking concrete pavers (PICP) were tested with pavement ages ranging from six months to 20 years. Two infiltration tests were run on 14 CGP lots filled with sand. The initial test was on the existing condition of the surface and second test was run after the removal of the top layer of residue (1.3 - 1.9 cm) to simulate maintenance. Maintenance improved the infiltration rate on 13 of 14 sites.

Analysis of the data showed that maintenance improves surface permeability at a confidence level of 99.8%. The median average infiltration rate increased from 5.0 cm/h, for existing conditions, to 8.0 cm/h after maintenance. Eleven PICP sites were also tested. Sites built in close proximity to loose fine particles had infiltration rates significantly less than sites free of loose fines. Averages of each condition are 60 cm/h and 2000 cm/h respectively. Even the minimum existing infiltration rates were comparable to those of a grassed sandy loam soil. Water quality data included in this study shows the results of six storms from June to October, 2003. With only a few storms to compare, only Zinc has been identified as having a statistically significant difference between infiltrate and runoff.

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PAPER INFO

Identification

CHI ref #: R223-22 905
Volume: 13
DOI: https://doi.org/10.14796/JWMM.R223-22
Cite as: CHI JWMM 2005;R223-22

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2005

Status

# reviewers: 2
Version: Final published

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© 2005 CHI. Some rights reserved.

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Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

The Journal of Water Management Modeling is an open-access (OA) publication. Open access means that articles and papers are available without barriers to all who could benefit from them. Practically speaking, all published works will be available to a worldwide audience, free, immediately on publication. As such, JWMM can be considered a Diamond, Gratis OA journal.

All papers published in the JWMM are licensed under a Creative Commons Attribution 4.0 International License (CC BY).

JWMM content can be downloaded, printed, copied, distributed, and linked-to, when providing full attribution to both the author/s and JWMM.


AUTHORS

Eban Bean

North Carolina A&T State University, Raleigh, NC, USA
ORCiD:

William F. Hunt III

North Carolina A&T State University, Raleigh, NC, USA
ORCiD:

David Bidelspach

North Carolina A&T State University, Raleigh, NC, USA
ORCiD:


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