2018 ICPI Annual Report ICPI 2018 Annual Report 0219_4 - Page 23

23 • Interlocking Concrete Pavement Institute 6. PICP full-scale load testing using stabilized bases to expand applications into more heavily trafficked roads to recover infiltration rates after vacuuming. Cleaning equipment used includes a Cyclone machine and Pave Tech’s prototype Typhoon machine. The monitoring will establish performance criteria for the Wisconsin DNR stormwater regulations, enabling wider use in stormwater management and green infrastructure, and specifically for combined sewer overflow reduction. The ICPI Foundation will receive a final report in 2019. Wisconsin Department of Natural Resources This grant provided two-year support of laboratory water quality analyses of outflows from a full-scale PICP using a no- infiltration (impermeable liner) design. This was considered cost-effective investment since this project previously received about $500,000 investment in construction, monitoring and pollutant analyses over the past several years from Unilock, Oldcastle, County Materials, as well as from the Wisconsin Department of Natural Resources (DNR) and the Wisconsin DOT. A report on previous monitoring is available on https:// pubs.usgs.gov/sir/2018/5037/sir20185037.pdf. For an enclosed (lined) permeable pavement system, the pollutant reduction data is surprisingly high and substantiates the benefits of a no-infiltration designs. As an unexpected benefit, the surface infiltration rate is being monitored as well as infiltration before and after various cleaning methods are applied. PICP appears to outshine porous asphalt and pervious concrete in its ability Wisconsin Department of Natural Resources’ PICP project Full-scale Load Testing of Paving Slabs and Planks ICPI members donated paving slab and plank materials, plus land at an ICPI producer member’s yard to build a full-scale load testing area. This is partial validation of selected slab and plank shapes, base materials and thicknesses developed by previous finite element modeling funded by the ICPI Foundation. To date, the test pavement has been exposed to about 3000 standard (18,000 lb) axles. The goal is 75,000 to assess paving slab and plank performance to compare to simulated loads per the finite element modeling.