Posted by vikasover 7 years ago
high strength concrete
Why high strength concrete is needed for prestressing
1 Reply
Posted by Nitin Adamover 7 years ago
Due to very high losses of bearing stress and bond stress in concrete in pretension and post tension members or beams respectively the minimum grade is M40 for pretension and M35 for post tension members. The losses are of the order of 25–30% in pretension and 15–20% in post tension sections