Columbia concrete is a regionally owned business that is definitely striving to gain the gratification of its clientele by giving exceptional concrete resources and solutions in Columbia SC. Air Entraining Brokers: Introduce air bubbles into the concrete, boosting freeze-thaw resistance and lessening the potential risk of scaling and cracking. A: https://www.tjcyindustrialchem.com/news/cement-additives-and-concrete-admixtures-key-differences.html