Reclaimed asphalt pavement (RAP) is the term given to removed and/or processed materials containing asphalt and aggregates. These materials are generated when asphalt pavements are removed for construction, resurfacing, or to obtain access to buried utilities. When properly crushed and screened, RAP consists of high- quality, well-graded aggregates coated by asphalt cement.
Reclaimed Asphalt Shingles (RAS)
Shingle recycling is economically viable, convenient where available, and saves valuable resources from being sent to a landfill. Recycled asphalt shingles can offset the the amount of new asphalt and aggregate in the final blend, which has the potential to reduce the cost of the mixture.
Warm Mix Asphalt (WMA)
Warm Mix Asphalt (WMA) is the generic term for a variety of technologies that allow producers of Hot Mix Asphalt (HMA) pavement material to lower temperatures at which the material is mixed and placed on the road. It is a proven a technology that can:
Porous asphalt offers a powerful tool in the toolbox for storm-water management.
In the natural environment, rainfall sinks into soil, filters through it, and eventually finds its way to streams, ponds, lakes, and underground aquifers. The built environment, by way of contrast, seals the surface. Rainwater and snow melt become runoff which may contribute to flooding.
For more in-depth information on the sustainability of asphalt pavements, check out the complete Sustainable Asphalt Pavements: A Practical Guide.