Moretrench's artificial ground freezing division, freezeWALL, is one of only a handful
of companies that provide this extremely effective ground stabilization technique
worldwide. Since 1976, freezeWALL has completed dozens of ground freezing projects. Our unparalled field experience has been the key to sucess.

The principle of ground freezing is the use of
refrigeration to convert in-situ pore water into ice.
freezeWALL mobilizes refrigeration plants to the site and
inserts closed-end freeze pipes into drilled holes
determined by the shape and depth of the structure to
be built. As chilled calcium chloride brine is circulated in
the freeze pipes, ice acts as a bonding agent and fuses the
soil and rock particles together. Freezing increases the
strength of the earth and makes it impervious.

The advantages to ground freezing are numerous:

• Ground freezing is most effective as an earth support system where
  groundwater is a concern and where either pumping or cutting off the
  water flow cannot be readily achieved with other methods.
  
  
• Ground freezing can be applied in the full range of soils from clay to
  cobbles and boulders, in pervious or fissured rock, and filled ground.
  
  
• Ground freezing can provide an absolute water cutoff and can be installed
  in difficult ground conditions. Freezing works in fills, soils with boulders
  and broken, fractured rock where other methods such as steel sheet piling,
  slurry walls or jet grouting cannot practically be put in place.
  
  
• Since no chemical additives are used in the freezeWALL process, it has no
  long-term effect on the subsurface environment. Once the refrigeration
  unit is turned off and the pipes abandoned, the impacted area gradually
  melts - usually restoring the groundwater and soil to their original states.