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How to reduce bleeding in concrete?

Bleeding Of Concrete:

Concrete Bleeding

Bleeding in concrete

Bleeding can be defined as the tendency of water to rise to the surface of freshly placed concrete. It is another form of segregation where some amount of water comes to the concrete surface after placing and compacting, before setting. The water content carries some particles of sand and cementing materials. Sometimes bleeding helps to reduce the plastic shrinkage cracks in concrete.

Effects Of Bleeding in concrete:

1. Concrete loses its homogeneity which results in weak and porous concrete.

2. It makes the concrete permeable.

3. It delays the surface finishing in pavement construction.

4. Bleeding of concrete causes high water-cement ratio at the top surface.

5. The bond between two concrete layers become weaker.

6. Pumping ability of concrete is significantly reduced.

How To Reduce Bleeding In Concrete:

Bleeding in concrete can be reduced by taking following precautions:

1. Design the concrete mix properly.

2. Add minimum water content in the concrete mix.

3. Add more cement in the mix.

4. Increase the amount of fine particles in the sand.

5. Use a little amount of air entraining admixture.

6. Use more finely ground cement.

ALSO READ – Field Density Test Of Soil By Sand Cone Method





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Comments ( 6 )

  1. Good work, I’m civil engineer is baater for new comers engineer ur sit for new engineer

  2. Abiity Sylvester
    April 13, 2017 at 5:21 am

    I have been following your posting, it is very educative & enjoyable, Thank you. more grace

  3. Prince Khandelwal
    June 14, 2017 at 6:58 pm

    Yours posts are very helpful….Good work
    Is it good if I would try for IAS exam ? I just completed my graduation in civil and can I continue my preparation for exam with job ?

  4. Drove B Williams
    July 14, 2017 at 5:46 am

    Thanks a lot for the posts. They’re really educating and enjoyable.

  5. Good …information sr

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