Segregation - Causes of Segregation, types etc
- Segregation of concrete is the separation of ingredients in concrete.
- Since concrete is a non-homogeneous material, improper mixing is the main reason for the segregation.
- It occurs during transporting, handling and placing of concrete
- the maximum permissible free fall of concrete to avoid segregation may be taken as 1.5 m or 150 cm.
Causes of Segregation in Concrete
- Placing of concrete from greater heights
- Improper transporting of concrete
- Long time Mixing of concrete
- difference in the aggregate sizes
- Due to improper handling of concrete
- Difference in the specific gravity of aggregates
- Improper vibration of concrete
- Improper mixing of concrete ingredients
- Excess use of water
- Poorly grading of aggregates
Segregation occurs in three types such as
- Separation of water and cement from other ingredients
- Segregation of coarse aggregate
- Separation of water content
