Permeable Interlocking Concrete Pavement (PICP) and Porous Asphalt in Denver

This site, constructed in 2008, provides a side-by-side comparison of two permeable pavements. Detailed reports on this site for both PICP and porous asphalt spanning 2008 to 2010 are available.

01 excavation sm
Excavation takes place on each side of the landscape island.
02 PICP after seperation wall sm
Following construction of a perimeter wall for the PICP section the crew prepares the subgrade, grading it to drain to an under drain.
03 PICP after sand and aggregate sm
An impermeable liner is installed and a sand (filter) layer is placed. Larger aggregate is placed over the filter layer.
04 PICP block placement sm
The final pavers are placed in the PICP section. Note: It is recommended that cut edges not be placed against the perimeter wall. This can cause damage to the pavers.
05 PICP water truck test sm
Infiltration tests are performed on the PICP.
after plaement of asphalt sm
Porous asphalt shortly following construction.

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