Concrete admixture according to their major functions can be divided into four categories:
1. To improve the rheological properties of fresh concrete admixtures: including water reduction Liu, air entraining agent and pumping agent.

2. Adjust the setting time of concrete hardening properties of additives include: retarder, early strength agent, accelerating agent.

3. Admixtures to improve concrete durability include: air-entraining agents, waterproofing agents, and rust agent.

4. Other properties of concrete admixtures include: air-entraining agents, expansive agent, antifreeze, pesticides, coloring agents, water repellent and pumping

Agent.

By (GB8075-87) admixture of the name and definition, additives can be divided into 16 names, their respective definitions are as follows:

1. Ordinary water reducer: Concrete slump in the same conditions, the additive can reduce the mixing water;
2. Early strength agent: accelerating the development of early strength of concrete admixtures;
3. Retarder: extended setting time of concrete admixtures;
4. AEA: In the process of mixing concrete can introduce a large number of uniformly distributed, stable and closed the admixture of tiny bubbles;
5. Superplasticizer: Concrete slump in the same conditions, can significantly reduce water mixture, the admixture;
6. Early strength water-reducing agent: both early strength and reducing water function of water reducing agent;
7. Retarding water-reducing agent: both retarded and reduced water features water-reducing agent;
8. Air-entraining water-reducing agent: both air-entraining and water reducing additive function;
9. Waterproofing agent: to reduce concrete permeability under hydrostatic pressure in the admixture;
10. Inhibitor: to inhibit or reduce the concrete reinforcement or other embedded metal corrosion additive;
11. Filling agent: concrete preparation process due to gaseous chemical reaction, can form a large pore outer concrete

Additives;
12. Expanders: volume of concrete can produce a certain expansion of the admixture;
13. Antifreeze: make concrete in the minus temperature hardening, and within the specified time to achieve adequate antifreeze strength admixture;
14. Coloring agents: can prepare a stable color, admixtures for concrete;
15. Accelerating agent: enables rapid hardening of concrete admixtures;
16. Pumping agent: to improve the pumping performance concrete mix additives
Sodium Naphthalene Formaldehyde
Melamine Based Plasticizer
Polycarboxylate superplasticizer