Which coating purpose helps protect concrete from freeze-thaw cycles?

The purpose of a surface sealer is specifically designed to protect concrete surfaces from the damaging effects of freeze-thaw cycles. When water penetrates the concrete, it can freeze in colder weather, causing it to expand and create internal stress within the material. As the ice thaws, the concrete contracts, which can lead to cracking, spalling, and overall deterioration over time.

A surface sealer works by creating a protective film that prevents water from infiltrating the porous surface of the concrete. This barrier not only helps to keep moisture out but also can reduce the risk of surface wear. Through its application, the longevity and integrity of the concrete are preserved, making it especially beneficial in climates that experience freezing temperatures.

While waterproofing also addresses moisture issues, its primary function is to create an impermeable barrier to stop water ingress, which may be more extensive or comprehensive than what is needed just for protection against freeze-thaw cycles. Hence, while both surface sealers and waterproofing can help protect concrete, the specific design and intended purpose of a surface sealer suit freeze-thaw cycle protection more directly.