TY  - JOUR
A1  - Nichols, Peter W. B.
A1  - Lucke, Terry
A1  - Dierkes, Carsten
T1  - Comparing two methods of determining infiltration rates of permeable interlocking concrete pavers
T2  - Water
N2  - 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.
KW  - permeable Interlocking Concrete Pavements
KW  - clogging
KW  - infiltration testing
KW  - water sensitive urban design
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/37227
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-372274
SN  - 2073-4441
N1  - This is an open access article distributed under the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/ which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
VL  - 6
IS  - 8
SP  - 2353
EP  - 2366
PB  - Molecular Diversity Preservation International (MDPI)
CY  - Basel
ER  -