What admixtures improve concrete’s resistance to de-icing salts in outdoor trash cans?

To improve concrete's resistance to de-icing salts in outdoor trash cans, specific admixtures are essential. Air-entraining agents are highly effective, as they create microscopic air bubbles within the concrete. These bubbles provide space for water to expand upon freezing, reducing internal pressure and minimizing cracking that allows salt penetration. Additionally, waterproofing admixtures, such as those containing crystalline technology or hydrophobic materials, can be incorporated to decrease the concrete's permeability. This limits the ingress of salt-laden water, thereby protecting the reinforcement from corrosion and the concrete from surface scaling and deterioration. Using a combination of these admixtures significantly enhances the durability and longevity of concrete trash cans exposed to harsh winter conditions and de-icing chemicals.