Dynamic compaction is a construction method which can improve the bearing capacity of the foundation and reduce the deformation, and its advantages are very obvious. However, rubber soil may exist in the foundation after dynamic compaction. In view of this phenomenon, the dynamic compaction machine rental Construction Company summarized the causes and preventive measures, to provide reference for the foundation dynamic compaction project.
In the dynamic compaction construction site, sometimes the water content of the foundation is very rich, once the water content reaches a certain value, it may form rubber soil. If the construction site encounters high intensity rainfall, it will increase the moisture content of the foundation soil, and it is easy to produce rubber soil. In order to make the dynamic compactor tamp the ground smoothly, it is necessary to first release the pore water pressure in the formation and clean up the pore water at the same time. In addition, after the compaction construction, the dynamic compaction construction company starts to level the site. If the foundation is rolled repeatedly by wheeled vehicles, the above phenomenon will also occur.
In view of the high water content of foundation, dynamic compaction companies usually set up vertical drainage structure or lay a layer of sand gravel cushion on site, and there will be enough intermittent time to wait until the pore water pressure completely disappears. Full compression or dynamic compression replacement. If it rains before full tamping, the soil pushed into the tamping pit will absorb moisture, so it needs to be covered and waterproof in advance.
After the complete tamping operation is completed, it is strictly forbidden to roll the vehicles with wheels. If the rubber soil area is very small, dynamic compaction construction personnel can be arranged to dig it out in time, and then replace some dry soil and rock materials to fill and supplement compaction. On the contrary, if the rubber soil area is large and the soil is thin, bulldozer or other methods should be used for treatment.