Board Thread:General Discussion/@comment-153.126.176.99-20161014015531

Impact compaction of subgrade by impact roller The impact compaction technology was first developed in South Africa. In the 1990s, I introduced the technology, mainly used for compaction of airports, roads, and mine yard. Because of its role in energy, to the construction of the project to obtain significant results, and thus by the engineering community generally attention, and gradually be extended.

Impact roller has been widely used in various basic engineering compaction, such as the airport runway, reservoir dam seepage control, especially in the old road reconstruction project, weak foundation treatment, the new compaction embankment and other aspects of the Application more widely. China's first impact roller in 1996 in Henan Province Highway Construction Machinery Plant Road trial, to the present, more than 10 enterprises have successfully produced or trial production.Small Road Roller - Shanghai Doan Machinery Technology Co.,Ltd

Impact roller is currently used in traction walking, impact wheel generally triangular, quadrilateral, pentagonal, hexagonal, and to the main triangle, blue impact roller, machine weight is generally 7 to 15 tons ( Most of the 15 tons), static compaction can be 8 ~ 25KJ, while the majority of 25KJ. The main technical parameters (trilateral type) No. Item Technical parameters 1 Standard potential 25kJ 2 Maximum impact 250-350t 3 Effective depth 1.0-2.0m 4 Influence depth 3-5 5 Running speed 12-15km / h 6 Compaction efficiency 1000m2 / h 7 Weight 27t 8 Compacting wheel weight 12t 1 Compacting mechanism of impact roller:

Compaction mechanism The impact of the role of roller is driven by the tractor non-circular wheel rolling. Polygon roller radius caused by the size of the potential energy gap with the combination of driving kinetic energy along the road surface to fill the static pressure, rubbing and impact of continuous rolling operation. It broke through the traditional way of rolling, when its corner on the ground, rolling forward, it will have a huge shock wave, a strong shock wave to the deep underground transmission, with the characteristics of the spread of the earthquake. As the crushing sequence of continuous impact to the ground, can fill the body rolling uniform compact. Impact compaction roller is characterized by the use of a certain quality of the object, from a certain height at the drop, the impact was pressure Material, so that the material produces a great stress change speed.

labour based road construction and maintenance technology  shape traffic safety equipment  pavement grinding machine  steel bridge expansion joint 