DOES DEICING SALT DAMAGE CONCRETE?
Some deicing chemicals, at very high concentrations, can damage concrete. But most often, damage occurs this way: Deicers turn the ice to water, which seeps into concrete pores. Later, the water freezes and expands, causing tiny craters in the surface. With each cycle, the damage grows worse. One way to reduce this damage is to sweep or shovel meltwater and slush off the concrete. Masonry sealers also help by plugging the pores in concrete.