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Densification of granular material (compaction) is often required in areas subject to vibrations such as earthquake loading or traffic movement. Compaction is executed during the construction phase of a project to avoid post construction settlements or liquefaction (the loss of strength of the granular material) during for example an earthquake. It improves the load-settlement behavior of the material, making it suitable to reduce foundation settlements of structures. 

All compaction methods make use of the same principle: introducing high local vibrations into the soil body. These high vibrations densify the granular material when larger than the interparticle resistance. As the vibration energy reduces with the distance to the vibration source, the effect of compaction is bound to physical limits depending on various parameters. In order to have a solution for each case, Cofra has three compaction techniques within its portfolio. Find out more by using the links in the overview below. 

Website Diagram Compaction Wide
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Our solutions

Cofra has the following compaction solutions within it's portfolio

CDC compaction for the movement of 13500 Ton bridge

A selection of our compaction projects

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CRC compaction for the Hartel Tank Terminal

We have used our CRC roller to compact backfilled material up to a depth of 3m on the Hartel Tank Terminal in Rotterdam in 2019.


CRC compaction Matarbari powerplant

We have executed CRC roller compaction to assure platform stability and check for soft spots on the Matarbari powerplant construction site before installation of vertical drains commenced.


CVC compaction for stability slopes

We have compacted the slopes for a pipe pull in Borselle, the Netherlands, from a barge up to a depth of 30m deep.


CDC compaction for Bessamer Park Sheffield, UK

Cofra Ltd Compacted 11,500m2 for the development of a new warehouse in 2019.


CDC compaction for UK Battery Industrialization Centre

Cofra Ltd compacted 12,500 m2 for the development of a new warehouse in 2019.


CDC compaction for the Bahrein steel factory, Bahrein

Our Cofra Middle East crews compacted in 2022, 40,000m2 for the reclamation to expand the Bahrain Steel Factory.