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Title: Vertical Distribution of Sediments in Pervious Concrete Pavement Systems

Author(s): Luis A. Mata and Michael L. Leming

Publication: Materials Journal

Volume: 109

Issue: 2

Appears on pages(s): 149-155

Keywords: clogging; infiltration rate; permeability; pervious concrete; sedimentation; sustainability.

Date: 3/12/2012

Pervious concrete pavement systems (PCPSs) are a unique and effective means to address important environmental issues and support green, sustainable growth by capturing storm water and allowing it to infiltrate into the underlying soil. Sedimentation leading to clogging, however, is a potential problem in the serviceability of PCPS. The sedimentation rates of pervious concrete with 20% porosity were examined with three different soil types: sand, clayey silt, and clayey silty sand. Pervious concrete cylinder specimens were exposed to sediments mixed in water to simulate runoff with a typical load of soil sediments. Falling head permeability tests were performed on the specimens before and after exposure—that is, sedimentation. Results show that the exfiltration rate can be affected by sediment characteristics in some situations.


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