A drying period following curing increases resistance to damage caused by freezing and thawing.

A drying period following curing increases resistance to damage caused by freezing and thawing.

• A. True
• B. False
• C. Not applicable
• D. Cannot be determined

Answer: (A)

The main idea is that freeze-thaw damage comes from water inside the concrete pores freezing and expanding. If you allow the concrete to dry after curing, the moisture content in the capillary pores is reduced, so there’s less water to freeze. With less saturated pore space, the internal pressures during freezing are smaller, which improves the concrete’s resistance to freeze-thaw cycles. This is why the statement is true: a controlled drying period can increase resistance to freezing and thawing by lowering pore saturation. Just be careful—drying too quickly or too much can cause shrinkage cracking, which can negate the benefits.

The main idea is that freeze-thaw damage comes from water inside the concrete pores freezing and expanding. If you allow the concrete to dry after curing, the moisture content in the capillary pores is reduced, so there’s less water to freeze. With less saturated pore space, the internal pressures during freezing are smaller, which improves the concrete’s resistance to freeze-thaw cycles.

This is why the statement is true: a controlled drying period can increase resistance to freezing and thawing by lowering pore saturation. Just be careful—drying too quickly or too much can cause shrinkage cracking, which can negate the benefits.