A retarding additive forms a protecting coating on the surfaces from the cement particles. The barrier minimizes accessibility by water molecules for the unhydrated cement, consequently it retards the hydration reactions. Numerous types of admixtures are used in concrete to enhance the performance of concrete. Concrete admixture is described as https://concrete-additives52950.tokka-blog.com/32500162/the-best-side-of-concrete-retarder