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Application areas

Cofra provides integrated solutions for many ground improvement and specific environmental markets. We cover all project phases related to ground improvement from (pre-) feasibility and design through to construction and monitoring. We can offer together with Boskalis comprehensive solutions (quay walls, roads, railways, tunnels and bridges) and have together almost over a century experience to accommodate it.

Our Markets and Application areas

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Infrastructure: roads, railways, ports, airports

We provide solutions for the consolidation and compaction of the subsoil in order to reduce post construction settlements and guarantee stability during construction. Our barriers can be used to create the line infrastructure below ground water level.

Infrastructure
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Dredging – land reclamations

Our consolidation and compaction techniques are optimized to be used on land reclamation projects. With high productions, high quality control and an exceptional fleet equipment we can be put in schedules against the largest dredging equipment in the world.

Reclamation
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Mining

Our Ground improvement techniques are highly suitable for the consolidation of tailing ponds to create more volume or increase the strength of the material. Our barrier solution are used isolate polluted materials from the environment.

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Construction: Industry, warehouses, logistics, tank farming, housing

Our ground improvement techniques are highly suitable for the preparation of the subsoil for the construction of structures. Our consolidation techniques reduce the settlement, whilst our compaction techniques can perfectly be used to compact the footing areas of warehouses.

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Pollution management

Our barrier solutions are due to the use of HDPE materials optimized to isolate the most polluting substances. This can be performed horizontal as well as vertical.

Pollution management
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Flood protection

Our barrier and consolidation solutions are often used in the flood protection market. Our consolidation techniques are used to consolidate the soil behind or under new dikes to increase the strength. Our barriers are used to control waterlevels, block sand transport or prevent erosion.

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Liquefaction mitigation

Our compaction solutions, earthquake drains and stone columns are used to prevent or mitigate the effects of the liquefaction of the subsoil.

Our solutions per market segment

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Our projects - Please filter on markets for the specific projects per market segment

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Liner installation for incinerated ashes embankment A9 highway

We have installed 220,000m2 of liner to cover incinerated ashes embankments on the new A9 deviation around Badhoevedorp in 2019.

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Liner installation for large incinerated ashed depot in harbour of Amsterdam.

We have installed 130,000m2 of liner to cover an incinerated ashes depot in operation between 2013 and 2018.

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Liner installation for landfill site Veendam

We have installed 288,000m2 of HDPE 2mm liner to cover a landfill in 2012.

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Liner installation former dumpsite Volgermeerpolder

We have installed 850.000m2 of HDPE 2mm liner to cover an old highly poluted landfill site between 2006 and 2010.

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Geolock installation as water barrier for highway cut A4

We supplied and assited with the installation of 45,000m2 of Geolock, a vertical impermeable 2mm HDPE seal, inside a cement bentonite walls to assure watertightness for a long cut below groundwater of the new extension of the A4 highway in the Netherlands. Maximum installation depth was 18m.

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Geolock installation as water barrier for Aquaduct N381

We installed 15,000m2 of Geolock, a vertical impermeable 2mm HDPE seal, up to a depth of 17.7m to assure watertightness for an aquaduct of the N381 provincial road in the Netherlands.