Title:
The Effect of Steel Fibers on the Moment Redistribution and Rotation Capacity of Post-Tensioned High-Strength Concrete Beams
Author(s):
P. De Pauw and L. Taerwe
Publication:
Symposium Paper
Volume:
228
Issue:
Appears on pages(s):
351-362
Keywords:
high-strength concrete hybrid fibre reinforced concrete;moment redistribution; post-tensioned beams; rotation capacity
DOI:
10.14359/14480
Date:
6/1/2005
Abstract:
Partial prestressing, unbonded tendons and high-strength concrete have become commonly used techniques and materials in the prestressed concrete industry. The effect of their application on the non-linear behaviour of continuous post-tensioned beams was studied in an experimental program at the Magnel Laboratory for Concrete Research of Ghent University. It was found that post-tensioned continuous concrete beams with higher strength concrete had limited moment redistribution and rotation capacity. In a further study it was investigated whether this effect can possibly be modified by the addition of regular steel fibres and micro steel fibres in high-strength concrete. The effect of regular steel fibres seemed rather limited. The addition of micro steel fibres improved the rotation capacity of high strength concrete beams.