Define bleeding. Suggest any two ways by which bleeding can be avoided.

Define bleeding. Suggest any two ways by which bleeding can be avoided.
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1 Answer

Answer :

Bleeding: It is one form of segregation in which water gets accumulated over settled concrete mass, called as bleeding.

Prevention of Bleeding: The bleeding can be avoided by following ways. 1. Bleeding can be prevented by selecting appropriate w/c ratio as per IS 456:2000, so that water content w.r.t. other materials can be maintained. 2. It can be also avoided by adopting proper CA/FA ratio; so that fine aggregate will not be more than coarse aggregate causing bleeding. 3. Mixing of concrete should be done using mixers to achieve homogeneity. Homogeneous mixture avoids chances of bleeding. 4. Excessive compaction by over vibration should be avoided to reduce bleeding effect.
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