Ground Reinforcement & Subgrade Stabilisation

Geosynthetics provide many benefits over traditional construction techniques where soils, subbases, subgrades, foundations, slopes and trafficked surfaces are constructed. By reducing traditional stone construction layers the use of geogrids, geocells and geotextiles have become the engineered, environmental and cost-effective solution for such civil engineering projects.

ABG has an extensive range of geosynthetics used in reinforcement and stabilisation applications including surface reinforcement, slope stabilisation and subbase stabilisation.

ABG’s technical team are able to provide technical support for all applications ensuring that the correct product solution is supplied.

Typical applications

  • Soil stabilisation
  • Ground stabilisation
  • Basal reinforcement
  • Roadway subbase reinforcement
  • Steep slope stabilisation
  • Tree root protection
  • Reinforcement for car parks and access roads


  • Reduces the depth of the subbase
  • Strengthens subbase construction
  • Cost-effective alternative to stone
  • Reduction is stone transportation costs
  • Geotextiles provide filtration & separation functions
  • Geogrids help reduce subbase thickness
  • Geocells reinforce slopes and embankments
  • Strengthen weak soils in horizontal applications

Typical Client Profile

  • Highway Engineers
  • Civil engineering contractors
  • Landscape Architects
  • Rail Engineers
  • Local Authorities
  • Parks and Private Estates

ABG supply a range of geosynthetic product solutions that provide reinforcement and stabilisation for soils, slopes and subbases:


Abgrid biaxial geogrid is used in a range of civil engineering applications such as ground reinforcement, subbase aggregate reduction, basal reinforcement, paved and unpaved road foundations, permeable paving construction, retaining walls and steep-sided soil embankments.

       ABg Geogrid for sub-base ground stabilisation

Road Foundation Design using CD225

According to the Design Manual for Roads and Bridges (DMRB) document CD225 (formerly IAN 73/06 revision 1 (2009), HD 25/94), clause 2.7, Note 2: “Options for improvement of the subgrade include excavation and replacing between 500 to 1,000 mm of the soft subgrade with granular fill, mechanical stabilisation (geogrids and/or geotextiles) and soil stabilisation”. ABG can propose a stabilised foundation solution to compensate for lower CBR strength values (i.e. less than 2.5%) and achieve the foundation class requirements. The design for all foundation areas shall be based on achieving a foundation class selected from Table 3.7 in CD225:

Email: for a free CD225 Design Assessment


Terrex NW geotextiles provide ground stabilisation by separating angular stone layers within a constructed subbase. By allowing water to percolate through, subbases are stabilised as the intermixing of different construction layers and subgrades is stopped. Gridtex is a high performance woven geotextile engineered for reinforcement applications and is ideal for strengthening a wide range of soils.


Webwall is a three dimensional cellular matrix that confines soil and fill material for steep retaining walls. Erosaweb controls erosion on slopes by confining fill material within the cells. Abweb geocell is designed to reinforce weak soils in horizontal applications, such as car parking areas and access roads used for traffic. Abweb TRP geocell protects tree roots where a pavement or road is to be constructed without damaging nearby trees.

Permeable Paving Surfaces

Sudspave porous plastic pavers provide a reinforced gravel or grass surface intended for traffic applications. Suitable for car parks, access roads, driveways and paths. For heavier load-bearing applications; including HGV access and crane hardstandings, Truckcell permeable plastic paving blocks should be considered.

Reinforced Grass Surfaces

Advanded Turf is a system that uses plastic mesh elements mixed with a specially selected rootzone to reinforce grass for occasional traffic, landscaped areas and amenity area usage.

Additional information

Contact ABG for further information

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