Concrete admixtures are used to improve the behavior of concrete under a variety of conditions. Concrete admixtures reduce the cost of construction, modify properties of hardened concrete, ensure quality of concrete during mixing/transporting/placing/curing, and overcome certain emergencies during concrete operations. There are two major classifications of admixtures used in concrete – Mineral admixtures and Chemical admixtures.
What are the advantages of mineral admixture in concrete?
Mineral admixtures react chemically with the weaker calcium hydroxide released from the hydration of cement to form stronger calcium silicate hydrates
This refines the pore structure, reduces the permeability and improves the durability of concrete structures
Mineral admixtures reduce the heat of hydration of concrete
