heavy duty road building. hot asphalt being laid and measured for a quality check as a part of a on site control test.

aggregate asphalt autobahn base bitumen black build bulldozer closed compactor construction control coring course depth dirt equipment field grade gravel heavy highway hot industrial industry investments jam layer machine machinery measure measurement measuring mixture motor motorway pavement paving place power recycling road rock roller section shallow sight site steel support surface temperature test texture tire traffic transport waiting way wheel work workers