When it comes to ramming construction, many people may not know much about it. In fact, this is a term that we often see in the process of ramming construction building a compacted foundation. The purpose of ramming construction treatment is to ensure the construction process and solve a series of troubles before construction. For example, it helps to improve the shrinkage characteristics during construction, which is due to the high degree of shrinkage of the foundation itself, indicating that the settlement and differential settlement to the building is relatively large, and certain measures need to be taken to make the foundation soil shrink, which in turn improves the shrinkage modulus.

Ramming construction treatment helps to improve the shear characteristics, thus avoiding shear damage, enhance the shear strength of the foundation soil, and thus avoiding the arching of the pit bottom caused by the poor bearing capacity of the foundation; Improvement of permeability characteristics, many people know that water seepage may occur in the dam or the house, and the ramming construction treatment is to implement certain measures through the study of the permeability and impermeability of the foundation itself and thus avoiding the seepage of water in the excavation.

During the construction process, it is inevitable that some special soils will be encountered. Ramming construction treatment also has a great improvement effect on special soils, which helps to eliminate or reduce the wet subsidence in loess, and also helps to deal with the expansion of expansive soils.

Ramming construction treatment can be categorized into three types in terms of construction techniques: full ramming, main ramming, and re-ramming. The distinction between the main rammer and re-rammer is generally based on the energy level of the rammer to define.

In the strong tamping construction full tamping process, the soil structure has been destroyed, the foundation soil produce super pore water pressure, but with the increase of time, the soil structure strength will be restored. Granular mound generally have better water permeability, conducive to the soil super pore water pressure dissipation resulting in consolidation. Strong tamping construction full tamping is primarily used to deal with gravel soil, sandy soil, low-saturation chalk and clay, wet loess, vegetative fill and miscellaneous fill and other foundations. Strong tamping construction full tamping is suitable for high saturation of silt and cohesive soils and other foundations on the deformation control requirements are not strict project.

Strong tamping construction full tamping basically can be categorized into two types:

① the use of general strong tamping construction full tamping construction process equipment and design methods, useful reinforcement of foundation soil, in order to reduce foundation compression and improve the bearing capacity of the foundation. The first contains low-energy ramming construction (conventional ramming construction), high-energy ramming construction full ramming and pre-treatment ramming construction full ramming (heap of soil line processing, so that the role of ramming construction) and so on.

② general ramming construction full ramming construction process can not be realized, it is necessary to combine with other processing techniques, equipment and methods of composite ramming construction full ramming foundation treatment, including the hole deep ramming construction method, ramming hammer rotary ramming construction, extrusion compacting ramming construction method, shaped hammer ramming construction, electro-osmotic ramming construction method, foundation ramming power piling method and so on.