Frost heaves?

Colleges & Universities Dartmouth College
1

<p>When I was driving into Hanover to visit the college, I saw signs along the road warning of “frost heaves.” What are those?</p>

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<p><a href=“http://www.pavement.com/PavTech/Tech/Fundamentals/fundfrost.html[/url]”>http://www.pavement.com/PavTech/Tech/Fundamentals/fundfrost.html&lt;/a&gt;&lt;/p&gt;