Concrete bleeding is defined as the appearance of water on the surface of concrete after it has consolidated but before it is set. This is a type of segregation where water appears at the concrete surface after placing and compacting, but before it is set. Water may also form a film under aggregate and reinforcing bar. Some bleeding is useful for finishing operations and to reduce plastic shrinkage cracking.
Problems due to Concrete Bleeding:-
Concrete bleeding can cause problems including the followings.
*It can delay in finishing.
*Bleeding of concrete can cause high *water-cement ratio at the top.
*It will result in poor bond between two layers.
*It can result in poor pump ability.
Concrete Bleeding Causes
Bleeding of concrete occurs due to the causes stated below:-
*The lack of fines.
*Too much water content in the mix.
*Bleeding Remedies
Remedies for bleeding of concrete are as follows:-
*More fines,
*Adjust grading,
*Entrained air,
*Reduce water content.
No comments:
Post a Comment