Asphalt is a by-product of the fuel making process so it is actually the ultimate in recycling. If the resultant sludge from oil refining was not used as asphalt we would have to find some other way of disposing of it. Also, as asphalt is porous it is less damaging to the groundwater and natural drainage systems. Like a lawn it’s a bit of a carbon sink too whereas concrete is not. As well as roads and airfields, asphalt is also used as an environmental liner for landfills, reservoirs, and fish hatchery ponds. And lastly asphalt is 100% recyclable and very little ever makes its way into landfill as waste.
26 Mar 2015