The Netherlands is a world-renowned lowland country with 12 provinces and 443 municipalities, with a relatively high soil moisture content. Impact rollers are suitable for road construction.

The export impact roller is used for special roadbed treatment in permafrost, swamp wetlands, and other areas. The surface of the swamp wetlands is directly filled with 100c sand gravel and then subjected to impact rolling treatment. Insulation berms are set on both sides, and in the water pond section, the frozen soil wetland foundation is treated by directly throwing and filling rubble without damaging the original ground surface.

The seasonal frozen soil section is directly paved with 50c sand and gravel for impact compaction, and the upper part is replaced with 30c sand and gravel for treatment. The low filling and shallow excavation section is excavated for weeding, replaced with gravel soil and reinforced with impact compaction. Impact compaction technology is the latest development of compaction technology in geotechnical engineering, The impact roller is driven by a tractor to roll the large and small radii of a polygonal roller with non circular wheels, resulting in a potential energy drop combined with the kinetic energy of travel. The continuous impact compaction operation of static pressure, kneading, and impact along the ground is carried out to achieve high amplitude and low frequency impact compaction.

The compaction mechanism of impact force is to reduce the porosity of soil particles, thus making the roadbed dense. When the 25kj impact roller operates at a speed of 12km/h, its impact force on the ground is about 2300KN. When the driving speed increases or the road surface is relatively hard, the impact force will also increase.

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