Editing Permeable paving (section)

=== Climate ===
Cold climates may present special challenges. Road salt contains chlorides that could migrate through the porous pavement into groundwater. Snow plow blades could catch block edges of concrete pavers or other block installations, damaging surfaces and creating [[potholes]]. Sand cannot be used for snow and ice control on porous surfaces because it will plug the pores and reduce permeability.<ref>{{Citation |last=van Duin |first=B. |year=2008 |title=Characterization of Long-Term Solids Removal and Clogging Processes in Two Types of Permeable Pavement under Cold Climate Conditions|publisher=11th International Conference on Urban Drainage |page=09|url= https://www.researchgate.net/publication/228513692|access-date=2020-12-13}}</ref> Although there are design modifications to reduce the risks, infiltrating runoff may freeze below the pavement, causing frost heave. Another issue is [[spall]]ing damage, which exclusively occurs on porous concrete pavement from salt application during the winter season. Thus porous paving is suggested for warmer climates. However, other materials have proven to be effective, even lowering winter maintenance costs by preserving salt in the pavement itself. This also reduces the amount of storm water runoff that is contaminated with salt chlorides.<ref>{{Cite news|url=http://stormwater.wef.org/2012/01/porous-pavement-performance-in-cold-climates/|title=Porous Pavement Performance in Cold Climates - The Stormwater Report|date=2012-01-05|work=The Stormwater Report|access-date=2018-03-23|language=en-US}}</ref> Pervious concrete and asphalt designed to reduce frost heave and spalling damage has been used successfully in [[Norway]] and [[New Hampshire]].<ref>{{Citation |last=Drake |first=Jennifer |year=2014 |title=Hydrologic Performance of Three Partial-Infiltration Permeable Pavements in a Cold Climate over Low Permeability Soil |journal=Journal of Hydrologic Engineering |volume=19 |issue=9 |publisher=American Society of Civil Engineers Library |doi=10.1061/(ASCE)HE.1943-5584.0000943 |s2cid=128619797 |url=https://ascelibrary.org/doi/full/10.1061/%28ASCE%29HE.1943-5584.0000943 |access-date=2020-12-13}}</ref> Furthermore, experience suggests that preventive measures with rapid drainage below porous surfaces be taken in order to increase the rate of snow melt above ground.