Shaft-grouted Ductile Driven Pile (Skin Friction Piles)

For soils in which skin friction could be enhanced by the grout resulting to much higher side resistance. These piles are designed as friction pile (suitable for soft/loose to stiff/dense soil conditions).

Installation procedure:

The first pile segment is placed on the ground with special shoe which has a larger diameter than that of the pile. Driving of pile segment with use of hydraulic hammer with TRM grouting/driving adapter. Simultaneous pumping of cement grout through the pile by means of concrete pump. Once the head of the first pile segment reaches the working platform level, the next pile segment is inserted into the socket of the newly embedded pile (Plug & Drive ®) and driven until the final depth of the pile. After cutting of the last pile segment overhang (if any) to the desired cut-off level, a load transfer plate is placed on top for connection to the foundation. 

Non-grouted Ductile Driven Pile (End-Bearing Piles)

For Geotechnical conditions wherein hard stratum is of economically reachable depth. Load is transferred predominantly by end-bearing. For very dense layers whereby prevailing skin friction is sufficient.

Installation procedure:

The installation procedure is similar to that of the grouted pile but with the following differences:

• No grouting is performed at the annular space.
• Special non-grouted pile shoe is employed whereby its diameter is the same as the pile pipe.
• The tapered end of the pile pipe is cut off before the shoe is placed.
• Only the hollow space of the pipe is grouted or concreted after the installation.