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Geoweb Ground Reinforcement

Hoofmark (UK) Ltd Geoweb is a cellular confinement system which can improve the performance of structural fill.  Hoofmark (UK) Ltd Geoweb increases the strength of fill material by providing apparent cohesion, in granular soil, through confining the material within its webbing. Hoofmark (UK) Ltd Geoweb prevents shear failure and lateral movement of aggregate materials through confinement. The system stabilizes the infill, providing a load distribution system over weak soils, base stabilization for paved surfaces and surface stabilization for unpaved surfaces. Hoofmark (UK) Ltd Geowebs can also be used to prevent erosion and stabilise slopes up to 45°.

Description:

Polyethylene perforated sheets strips which are welded to the adjacent strip at regular intervals.  When expanded the strips form a cellular structure which can be filled with granular material, resulting in a composite structure.

 Geoweb detail

Function:

Unconfined Granular Pavement System

The Geoweb Granular Pavement System

Hoofmark (UK) Ltd Geoweb system is a structural fill using granular material with apparent cohesion provided by the confining cells.  Load deformation of the granular material is reduced through transferring vertical stresses through the cell structure which then mobilises the hoop strength and passive resistance of the adjacent cells.

Benefits:

Hoofmark (UK) Ltd Geoweb can provide economic and environmental benefits compared to constructing traditional granular fill for load support:

  1. Reduced excavation due to reduced thickness of fill layer
  2. Reduced cost of disposal off-site (land fill tax)
  3. Reduced cost of importing granular material (aggregate tax)
  4. Reduced cost of construction:
    1. Less material to import and place
    2. Less layers to compact
    3. Construction plant can use Geoweb construction for access

 

In vegetated systems, the perforations increase root lock-up, creating a more stable vegetated mass and overall healthier soil environment. The perforations allow lateral drainage through the system, thereby enhancing performance of the Hoofmark (UK) Ltd Geoweb system in saturated soil conditions.

Applications:

Hoofmark (UK) Ltd Geoweb system is beneficial in the following load support situations:

  1. Soft or weak sub-soil situations where very thick sub-base layers would be required
  2. Where locally available soils and fills are unsuitable
  3. Where there is a high cost associated with excavation, disposal or importing fill