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Refining the maintenance techniques for Interlocking Concrete Paver GIs - abstract
Citation:
Ehsaei, A., S. Abdollahian, M. Borst, R. Brown, J. Gray, AND L. Kurtz. Refining the maintenance techniques for Interlocking Concrete Paver GIs - abstract. Presented at 2013 INTERNATIONAL LOW IMPACT DEVELOPMENT SYMPOSIUM, Saint Paul, MN, August 18 - 21, 2013.
Impact/Purpose:
Presentation on properties of sedimet collected from articulated paver stormwater control
Description:
Surface clogging adversely affects the performance of Interlocking Concrete Pavements (ICP) by reducing their ability to infiltrate stormwater runoff. Determining the correct methods for remedial maintenances is crucial to recovering and maintaining efficient ICP performance. To examine the effectiveness of two maintenance techniques for recovering surface infiltration this study analyzed the recovered sediments from the surface of the ICP and the pre and post maintenance surface infiltration rates. The initial maintenance technique consisted of a regenerative vacuum sweeping truck treatment. The second maintenance followed a manufactures’ recommended air pressure blowout of the ICP surface and gaps. The maintenance techniques were employed on two ICP green infrastructures (GI) controls in a Louisville, KY. The study collected samples of the material removed from the ICP installations during each maintenance and analyzed them for Particle Size Distribution (PSD) and Organic Matter (OM). The analysis indicated that the well graded sediment fell out first along the upper gradient of the ICP control, while larger organic material clogged the piled down gradient gaps. To quantify the surface clogging, the study used both embedded instrumentation and surface infiltration testing. Through the analysis of recovered sediment samples, and comparison of pre- and post-maintenance infiltration rates against the rainfall data, the effectiveness of each technique is determined. Initial results indicated that the air pressure blow out technique is more effective in recovery of the surface infiltration rates. Going forward the study plans to continue the analysis of collected sediment samples and recovered infiltration rates to examine the impact of seasonal variability and the surround physical environment on sediment loading in the controls. The results will be used to refine maintenance techniques and frequencies for ICP controls.
URLs/Downloads:
http://www.cce.umn.edu/2013-International-Low-Impact-Development-Symposium/index.html