frost heave

noun Geology.
an uplift in soil caused by the freezing of internal moisture.

1945–50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
frost heave
Also called: frost heaving the upthrust and cracking of a ground surface through the freezing and expansion of water underneath

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
These circles are likely caused by frost heave, the upward thrusting of the
It appeared that frost heave had lifted all of the surface material and created
  many air pockets under the surface.
Freezing also breaks small particles into finer parts, accelerating the sealing
  of the pores when the frost heave layer settles.
Water weakens pavement support and contributes to frost heave and cracking.
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