Maintenance Equipment Testing on Accelerated Clogged Permeable Interlocking Concrete Pavements

Permeable interlocking concrete pavements (PICP) allow stormwater to infiltrate directly through aggregate-filled joints. The lack of proven cost-effective and practical approaches for permeability restoration prevents the wide-spread adoption of PICP systems in Canada (and North America). Novel and practical maintenance and operational methods, supported by scientifically-based proof of effectiveness, are needed. Better methods explicitly tailored for PICP is needed so that the required interval between maintenance events can be lengthened and thereby reducing overall lifecycle costs. The University of Toronto conducted this study at a PICP test pad, constructed in 2017, located at the Toronto and Region Conservation Authority’s (TRCA) Kortright Centre for Conservation in Vaughan, Ontario. The test pad included seven 3 m by 3 m (10 ft by 10 ft) PICP cells constructed with a generic grey concrete paver arranged in a herringbone pattern. A perforated pipe drained the PICP cells. Five test cells were clogged with street sweepings graded to match clogging sediments sampled from mature PICP parking lots within the Greater Toronto Area. The test cells were clogged over several weeks over the summer in 2017 through a controlled accelerated clogging procedure developed by UofT researchers. Surface infiltration capacity was measured following ASTM C1781 procedures, and restorative maintenance was considered required when mean surface infiltration measurements approached 250 mm/hr (10 in/hr) which is generally equivalent to a 98% overall reduction in original surface infiltration rates. Subsequently, each cell received restorative maintenance. Five different maintenance treatments were tested including a high pressurized-air and vacuum system, regenerative air street sweeping, power washing followed by vacuuming, vacuum street sweeping and waterless mechanical street sweeping. One test cell was clogged with a mixture of street sweeping and clayey soils and maintained with the high pressurized-air and vacuum system to explore the impact that cohesive sediments have on maintenance effectiveness. Finally, one test cell was treated with early and repeated maintenance with a regenerative air street sweeper.

• Record URL:
  https://www.tac-atc.ca/sites/default/files/conf_papers/bowers1.pdf
• Corporate Authors:

  Transportation Association of Canada

  ,    
• Authors:
  • Drake, J
  • Sarabian, T
  • Scott, J
• Conference:
  • Transportation Association of Canada 2021 Conference and Exhibition - Recovery and Resilience: Transportation after COVID-19
• Publication Date: 2021

Language

• English

Media Info

• Media Type: Web
• Pagination: 1 PDF file, 7.3 MB, 74p.
• Monograph Title: Transportation Association of Canada 2021 Conference and Exhibition - Recovery and Resilience: Transportation after COVID-19

Subject/Index Terms

• TRT Terms: Cleaning; Conferences; Equipment; Evaluation; Porous pavements; Silting
• Non-Preferred Terms: Sett
• Geographic Terms: Canada
• ITRD Terms: 8018: Canada; 3849: Cleaning; 8525: Conference; 3674: Equipment; 9020: Evaluation (assessment); 4772: Porous concrete; 5215: Silting
• Subject Areas: Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01785326
• Record Type: Publication
• Source Agency: Transportation Association of Canada
• Files: ITRD, TAC
• Created Date: Oct 22 2021 3:20PM