Freeze-Thaw Resistance

Definition - What does Freeze-Thaw Resistance mean?

Freeze-thaw resistance is the ability of concrete, coatings or other materials to withstand the destructive forces of cyclic freezing and thawing. The freeze-thaw process is sometimes assisted by water. There are two main types of physical weathering in concrete structures or rocks:

  • Freeze-thaw
  • Freezing and expansion

Freeze-thaw resistance is also known as freezing and thawing resistance.

Corrosionpedia explains Freeze-Thaw Resistance

Freeze-thaw resistance is the property of solids (e.g., concrete) to resist cyclic freezing and melting.

In the freeze-thaw process, water continuously seeps into cracks. When the water freezes and expands at low temperatures, it produces pressure in the pores of the concrete. If the pressure exceeds the tensile strength of the concrete, the cavity will dilate and rupture thereby multiplying the cracks within the structure. The accumulative effect of successive freeze-thaw cycles and disruption of paste and aggregate can eventually cause expansion, cracking, scaling and crumbling of the concrete.

Some of the chemicals that can reduce the freezing point of water and thus reduce the freeze-thaw process are sodium chloride, calcium chloride, magnesium chloride and potassium chloride.

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