- 05/11/2013The large freeze dredging assignment in the Värtan Harbour, Stockholm, is about to get started. A total of 3500 square meters will be treated.
- 10/09/2013FriGeo has landed a very prestigious contract regarding freeze dredging in the Värtan harbor, outside Stockholm, Sweden, were Stockholms Hamnar
The Method – The Power of Water and Ice
During freeze stabilization blocks of the bottom sediment are frozen below water and stabilized before being lifted. Frozen sediments are nearly as hard as concrete and the content of the frozen block, whether a contaminant or a valuable object, will stay safely embedded in the sediments while being salvaged to land.
Artificial ground freezing has been in the existence for over 100 years and is a proven method used to provide earth support for excavations in the mining and construction industry.
FriGeo has taken this method one step further by applying it to underwater environments and to salvage and remediation projects where coverage, precision, cost effectiveness and environmental sustainability are top priorities.