1) Concrete 2) Construction terminology
Found on
https://www.crosswordclues.com/clue/whitetopping
Whitetopping is the covering of an existing asphalt pavement with a layer of Portland cement concrete. Whitetopping is divided into types depending on the thickness of the concrete layer and whether the layer is bonded to the asphalt substrate. Unbonded whitetopping, also called conventional whitetopping, uses concrete thicknesses of eight inches ...
Found on
http://en.wikipedia.org/wiki/Whitetopping
Concrete overlay pavement placed on an existing asphalt pavement.
Found on
https://www.encyclo.co.uk/local/21122
No exact match found.
