Admixture

Admixtures are those which are added to concrete to give some desired quality to the concrete.

As per the report of ACI committee 212 admixtures have been classified into 15 groups according to type of materials constituting the admixture or characteristic affect of the use. The following are 15 groups:

1.Air-entraining agents
2.Pozzalonas
3.Accelerators
4.Retarders
5.Gas forming agents
6.Air-detraining agents
7.Alkali-aggregate expansion inhibitors
8.Damp-proofing and permeability reducing agents
9.Workability agents
10.Grouting agents
11.Corrosion inhabiting agents
12.Bonding agents
13.Fungicidal, germicidal and insecticidal agents
14.Coloring agents
15.Miscellaneous agents