Geogrid

What is Geogrid?

 

Geogrids are meshed polymer materials mainly used to reinforce soil for slope stabilization.

These materials are made of polyester and polyethylene or a combination of them with similar materials. Geogrids are available in different dimensions in the form of three-dimensional meshes.

They can be used as reinforcement due to their high tensile strength and considerable mesh interlock. These geosynthetics are placed on top and below geotextile in areas with saturated or damp soil.

The mechanical strength of geogrids is usually measured in kN/m in the longitudinal and lateral directions. For example, an engineering department may request a geogrid with 25 kN/m × 55 kN/m strength.

 

دسته:

توضیحات

Advantages of Geogrid:

  •  Fast construction and uniform concrete placement during pipe protection
  • Strong bedding
  • Low construction cost
  • Control and drainage of surface water
  • Easy cathodic protection of pipes
  • Concrete reinforcement
  • Fast and easy installation
  • Less expensive than similar materials, such as rebar
  • Full protection against aqueous corrosive agents
  • Improvement in train loading capacity
  • Increase in train speed
  • Slope stabilization

 

Important points about geogrids

  • High walls

Geogrids usually occupy 70% of the height of a wall.

  • Ramps and double-slopes

Geogrids usually occupy the full width of an earthwork.

  • Seismic design

The distance between geogrids is considered in the design. This distance is longer in areas with low seismicity.

  • Slope stabilization

The distance between geogrids varies depending on the slope. For instance, the distance between rows of geogrids is 8 inches in a 1:8 slope whereas it may be as low as 1 inch in walls and vertical slopes.
Geogrids have an operating temperature of -50°C to 100°C and can be used in any climate.

 Applications of geogrids

  • Protection of petroleum, natural gas, and water pipes
  • Erosion prevention in slopes
  • Prevention of rockfall
  •  Manual road construction  in sloughs
  •  Construction of braces, barrages, and earthworks
  •  Drainage and lining
  •  Soil reinforcement
  •  Plaster and cement wall reinforcement
  •  Covering of floors and concrete parts
  •  Water canals within tunnels
  •  Bedding of roads and paths
  •  Reinforcement of railway and runway bedding
  •  Asphalt reinforcement
  •  Stonewall stabilization

 

 

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