In highways, railways, airports, water conservancy projects, and construction projects, road rollers are mainly used to compact roadbeds, pavements, levees, cofferdams, building foundations, etc., compacting narrow spaces is suitable for small rollers.

Through rearrangement, filling process, separation process and compaction process. Achieve external forces to overcome the friction and cohesion between the particles of the soil, sand, and asphalt mixture to rearrange, move closer to each other, squeeze out the water and air, and make the friction and cohesion between the material particles become more Larger and denser material.