Which type of concrete has significantly increased resistance to freezing and thawing?

Air-entrained concrete is specifically formulated to enhance resistance to freezing and thawing cycles. This type of concrete includes tiny air bubbles that are intentionally introduced during the mixing process. These air voids allow the water within the concrete to expand when it freezes, thus relieving internal pressure and preventing cracking that can occur in normal concrete due to the expansion of freezing water.

The microscopic air pockets created help absorb the stresses produced by freeze-thaw cycles, making air-entrained concrete particularly suitable for environments subject to such conditions, like roads, pavements, and infrastructure in cold climates. The use of air-entraining agents makes this concrete type more durable against the deteriorating effects of ice formation and thawing, thus significantly extending its service life compared to other concrete types that do not incorporate these features.