Civil Engineering

Success story

Helping The Mediterranean Bypass Stand Firm Against Earthquakes

PROJECT OVERVIEW

Enkagrid PRO has brought long-term stability to the embankments of a major infrastructure project that must face the threat of high seismic activity.

35

earth walls

needing to be stabilised

1%

post construction elongation

across wall service life

Huge highway project encounters seismic challenges

The Mediterranean Bypass is a major infrastructure project in northern Morocco that crosses the earthquake prone Rif region. High seismic activity is one of the primary causes for instability in embankments, slopes and mountainsides. Therefore construction of the highway – vital for the region’s development - called for a highly flexible support technique. It needed high inertia to withstand the seismic effects, but should also apply the lowest possible load to the slopes themselves.

Earthquake resistant, flexible and light

The use of earth walls reinforced with Enkagrid PRO geogrids addressed both these issues. Our nonwoven geotextile Enka-Tex delivered separation and filtration functions between gabions and embankment materials. Enkadrain Wide was installed to ensure the drainage of the excavated embankments behind the walls. Enkagrid PRO’s large nominal aperture size (50x120mm) also aids installation in all weather conditions, including high winds – an advantage in this breezy coastal environment.

CUSTOMER

Kingdom of Morocco

LOCATION

Mediterranean Bypass, Morocco 

APPLICATION 

Edge Drainage

Reinforced Soil Structures

Soil Consolidation & Land Reclamation

 

Enkagrid PRO contributes to a long lifetime

The challenges of the project and the walls’ geometry placed considerable demands on the long-term behaviour of the reinforcing material. Enkagrid PRO’s exceptional qualities in this area mean that the geogrid elongation during the walls’ lengthy service life will not exceed 1%.

Products used on this project

Enkamat

Enkamat A20

Enkamat J

Enkagrid MAX

Enkagrid PRO

Enkamat W

Areas of application

Edge Drainage

Preventing damage to road structures by draining edges and soil embankments to maintain the soil's strength.

Reinforced Soil Structures

Cost-effective and sustainable schemes to optimise minimal available land space when creating new infrastructure. Reduces the need for removing in-situ materials or importing new materials.

Soil Consolidation & Land Reclamation

On coastal reclamation works, the finished ground profile may not settle evenly. Releasing the groundwater and reducing the pore water pressure quickly allows you to complete consolidation settlement while reclamation works and infrastructure installation are underway.

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