roller machine ed for layer-by-layer compaction of loose, loosely connected and connected soils and bases in the constructio

activity airfields asphalt asphalting background bases blacktopping builder building bulldozer city compacting compaction connected construct construction dams designed earthworks embankments engineering heavy highways hydraulic industrial laborer layerlayer loose loosely machine machinery maintenance mechanical other outdoors pave paver paving pneumatic powerful pressing pressure renovation repair repairing road roadwork roadworks roller site soil soils steam street structures teamwork tracked tractor traffic truck tyred urban vehicle vibrating vibration vibroroller workers