A. It's an admixture that triggers the development of the technique of microscopic air bubbles in cement paste throughout mixing, generally to improve its resistance to freezing and thawing and to further improve workability (ACI 212.3R). Plasticizers are substances which have been additional to concrete to scale back the level https://israeljesdp.thezenweb.com/the-single-best-strategy-to-use-for-water-reducing-admixtures-70354714