How to Reduce Bleeding in Concrete?
The tendency of water to rise to the surface of freshly placed concrete is called bleeding. Bleeding causes the formation of a porous, weak and non-durable concrete layer at the top. It also increases the permeability of concrete.
Bleeding can be reduced by adopting the following measures:
- Using pozzolanic materials.
- Proper proportioning of ingredients and uniform & complete mixing.
- Using air-entraining agents.
- Using finer cement.