Monday, August 19, 2013

How many kinds of concrete admixtures

Nowadays, concrete mixer is widely used in construction sites, and concrete admixture is also an important part in the buiding. According to (GB8075-87) classification, concrete admixtures can be divided into four categories according to their main functions:


1. Improve the rheological properties of fresh concrete admixtures:


Including a variety of super plasticizer, air entraining agents and pumping agents.


2. Adjust the setting time of concrete, hardened performance additives


Include: retarder, early strength agent, quick-setting agent.


3. Improve the durability of concrete admixtures


Include: air-entraining agents, waterproofing agents, and rust agent.


4. Other properties of concrete admixtures to improve


Include: air-entraining agent, expanding agent, antifreeze, coloring agents, waterproofing agents and pumping agents.






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