Toluene diisocyanate manufacturer Knowledge Names and definitions of concrete admixtures with different functions

Names and definitions of concrete admixtures with different functions

Names and definitions of concrete admixtures with different functions

According to the national standard GB8075-2005, 27 types of concrete admixtures are defined. They are:

1. Ordinary water-reducing admixtures: When the slump of concrete is basically the same, it can reduce Mixing water amount of admixture.

2. Early strength agent: an admixture that accelerates the early strength development of concrete.

3. Retarder: an admixture that prolongs the setting time of concrete.

4. Air-entraining agent: An admixture that introduces a large number of uniformly distributed, stable and closed micro-bubbles during the mixing of concrete.

5. High-efficiency water-reducing admixture: an admixture that can significantly reduce the amount of mixing water when the slump of concrete is basically the same.

6. Early-strength water-reducing admixture: an admixture with both early-strength and water-reducing functions

7. Retarded water-reducing admixture: an admixture with both retarding and water-reducing functions Admixtures

8. Air-entraining and water-reducing admixtures: Admixtures with both air-entraining and water-reducing functions

9. Waterproofing agents: Can reduce the water permeability of concrete under hydrostatic pressure of admixtures.

10. Rust inhibitor: An admixture that can inhibit or reduce the corrosion of steel bars or other embedded metals in concrete.

11. Air-entraining agent: An admixture that releases gas due to chemical reactions during the concrete preparation process, resulting in the formation of a large number of pores in the concrete.

12. Expansion agent: an admixture that can cause a certain volume expansion of concrete.

13. Antifreeze: An admixture that can harden concrete at negative temperatures and achieve sufficient antifreeze strength within a specified time.

14. Accelerating admixture: an admixture that can quickly solidify and harden concrete.

15. Pumping agent: an admixture that can improve the pumping performance of concrete mixtures.

16. Coagulant: an admixture that can shorten the coagulation time of the mixture.

17. Retarding and high-efficiency water-reducing admixture: an admixture that has both retarding and efficient water-reducing functions.

18. Colorant: an admixture that can prepare colored concrete

19. Water-retaining agent: an admixture that reduces water loss in mortar and concrete.

20. Flocculant: An admixture that can increase the viscosity of concrete and resist the separation of cement and aggregate during construction in water.

21. Thickener: an admixture that increases the viscosity of the concrete mixture.

22. Shrinkage reducing agent: an admixture that reduces the shrinkage of concrete.

23. Plastic retaining agent: an admixture that reduces the slump loss of concrete within a certain period of time.

There are other things that are not specified in the standards but have been widely used in projects:

Pumping antifreeze: an admixture with both pumping and antifreeze functions.

Pumpable waterproofing agent: an admixture with both pumping and waterproofing functions.
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