Comparing Two Methods of Determining Infiltration Rates of Permeable Interlocking Concrete Pavers

Peter Nichols; Terry Lucke; C Dierkes

doi:10.3390/w6082353

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Comparing Two Methods of Determining Infiltration Rates of Permeable Interlocking Concrete Pavers

Journal article

Open access

Peer reviewed

Comparing Two Methods of Determining Infiltration Rates of Permeable Interlocking Concrete Pavers

Peter Nichols, Terry Lucke and C Dierkes

Water, Vol.6(8), pp.2353-2366

2014

DOI: https://doi.org/10.3390/w6082353

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Abstract

Permeable Interlocking Concrete Pavements

clogging

infiltration testing

water sensitive urban design

Adequate infiltration through Permeable Interlocking Concrete Pavements (PICPs) is critical to their hydraulic performance. Detected by monitoring infiltration performance, reduced infiltration rates can indicate that maintenance is required. Measurement of infiltration rates has previously been problematic on PICPs because of a lack of accepted standard methodologies and the practical difficulties in modifying existing testing methodologies. On large sites, standard methodologies necessitate multiple measurements to achieve accuracy. Standard methods also contend with practical issues such as sealing the rings to the surface to prevent lateral water flow. This study examined the performance of two PICP surface infiltration rate measurement methods: a modified double-ring infiltrometer (DRIT), and a specially designed rainfall simulation infiltrometer (RSIT). A positive correlation (R2 = 0.85) of results was found between the two, demonstrating that the RSIT was comparable to the DRIT. The modified DRIT produced surface infiltration results approximately 60% higher than the RSIT results. The RSIT provided lower variation between tests, requiring fewer measurements in large sites whilst still maintaining accuracy, thereby improving testing efficiency. The new RSIT method also eliminates some of the practical difficulties with existing methodologies such as unrealistic pressure heads artificially increasing infiltration rates, and the use of sealant under test measurement infiltration rings.

Details

Title: Comparing Two Methods of Determining Infiltration Rates of Permeable Interlocking Concrete Pavers
Authors: Peter Nichols (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Terry Lucke (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
C Dierkes (Author) - Frankfurt University of Applied Sciences, Germany
Publication details: Water, Vol.6(8), pp.2353-2366
Publisher: MDPI AG
Date published: 2014
DOI: 10.3390/w6082353
ISSN: 2073-4441
Copyright note: Copyright © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99448765802621
Output Type: Journal article