It doesn't matter how it is precisely called. It still creates a huge concern in the same of being environmentally good.

Roads are the worst place as they are constantly open to the elements and mechanical wear and are washed over and over by rain water.

Using it for housing is a different and possible a better scenario given that environmental risks are taken into account at the end of the life when the material is disposed (or recycled or up/down cycled) after demolition.