Fundex Specialist in (deep) foundations

Fundex® pile grout injection

Vibration-free, ground-formed, soil-displacing concrete pile, screwed into place at depth using a steel auxiliary tube and with the addition of grout injection.

pile dimensions:
Standard dimensions are: 

Shaft diameter [mm]:
e drill bit [mm]:
ø 380 ø 450
ø 460 ø 560
ø 540 ø 660
ø 660 ø 840

A grout sleeve with the same diameter as the drill bit will be installed in the sand layers.

pile length:

Up to approximately 35 to 40 meters. The pile always driven to ground level. This determines the pile length from the pile tip level to ground level.

Procedure:

  • A steel guide pipe, fitted with a detachable drill bit, is placed at ground level;
  • The pipe is driven to the desired depth by applying axial pressure and torque while injecting grout;
  • Once the desired pile tip elevation is reached, the reinforcement is suspended inside the pipe;
  • The pipe is filled with concrete;
  • The pipe is pulled in an oscillating motion, with the drill bit remaining in place;
  • The pile now been manufactured;
  • The rig be moved to the next pile location.

Advantages:

  • Vibration-free and 100% soil displacement (no soil relaxation or cone resistance decline)
  • No risk of damage to adjacent properties during pile construction;
  • A high load capacity is permissible;
  • Ideal for use as a compression or tension post;
  • For installation in very heavy soil conditions;
  • No noise pollution, such as from pile driving or vibration.
  • The only noise is the motor of the drill;
  • No soil discharge. Soil is pushed out to the side.

Reinforcement:

The piles fitted with prefabricated reinforcement cages. For quality reasons, the piles are reinforced piles their entire length.

Concrete:

The piles cast in situ using concrete delivered directly from the plant. All strength classes can be used for this purpose.

Soil mechanical bearing capacity:

The load-bearing capacity is calculated in accordance with current NEN and CUR standards.
The following factors can be applied:
αp = 0.63 αs = 0.009
β = 1.0 αt = 0.009
s = 1.0

For questions regarding load capacity, please contact our office.

Applicable foundation:
Fundex piles grout injection are well-suited for use in heavy soil layers. If you have any doubts regarding feasibility, please feel free to contact us.

Teeth alignment:
Up to 4:1 forward and 2:1 backward.

Workspace:
Sufficient headroom and space pile required for the installation of the Fundex pile .

Adjacent structures:
The piles be installed at a distance of approximately 0.9 m perpendicular to the adjacent structure. For internal corners, this distance is naturally greater.

Executable rigs:
Fundex F12SE, F15, F16, F3500, and F4800.

rigs dimensions:
Depending on rig type. Most common: installation site approx. 7 x 12 m. rig height rig 40 m. Assembled weight variable from approx. 63 to 210 tons.

 

Animation, Fundex pile method pile grout injection

Veldhoven, ASML

Utrecht, HighFive

Questions or comments?

Please visit our contact page to submit your questions or comments. Our team will get back to you as soon as possible. You can also send the following specific questions directly to the email addresses below:

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