Aggregate- also known as gravel or crushed stone.
Limestone rocks make most dirtroads, but main roads like highways are made with asphalt.
asphalt
No the roads are made out of asphalt.
Gravel.
No. asphalt is made up waste material left over after the manufacture of gasoline, kerosene and diesel fuels. tiny rocks or (aggregate) is mixed in with the oil. Sometimes tire chips are used instead of aggregate.
asphalt
tar
Asphalt (petroleum tar) mixed with gravel.
Asphalt. Macadam is another common name for the process. To Macadamize something is to pave it with asphalt.
ROADS ARE MADE OF ASPHALT.
pave roads and walkways
Asphalt pitch is a black substance that is used to repair roads. Asphalt pitch is the liquid form of tar.