Types of Admixtures used it concrete

Types of Admixtures used in concretes with there functions are as follows

AIR ENTRAINING 



improves durability, workability, reduces bleeding, reduces freezing/thawing problems (e.g. special detergents)

SUPERPLASTICIZERS 

increase strength by decreasing water needed for workable concrete (e.g. special polymers)

RETARDING 

delays setting time, more long term strength, offsets adverse high temp. weather (e.g. sugar )

ACCELERATING 

speeds setting time, more early strength, offsets adverse low temp. weather (e.g. calcium chloride)


MINERAL ADMIXTURES

improves workability, plasticity, strength (e.g. fly ash)

PIGMENT 

adds color (e.g. metal oxides)