What is air-entrained concrete and why I am I required to use it when placing sidewalks?
Adding an admixture to the concrete mix at the concrete batch plant produces air- entrained concrete. This produces tiny air bubbles uniformly throughout the concrete. These bubbles resist freeze-thaw conditions, reduce the negative affects of de-icer chemicals, mitigate sulfate attack, and increase the workability of the concrete. Building code departments typically require air-entrained concrete where freezing weather conditions exist.
