Title:
Splitting action of the prestressing strand during the transfer of the prestressing force. l: Experimental results
Author(s):
Sharaf, B.; Gálvez Ruiz, J.C.; Planas Rosselló, J.; Elices Calafat, M.
Publication:
ACHE
Volume:
50
Issue:
212
Appears on pages(s):
61 - 71
Keywords:
DOI:
Date:
1/3/1999
Abstract:
The transmission length in prestressed beams depends on the concrete-steel bond and on the splitting action of the indented wire. This paper shows a novel testing procedure to evaluate the concrete-steel bond and its reaction with the splitting action of the pretensioned indented wire. 27 specimens, combining 3 covers and 3 indentation depths, have been tested. The deeper the indentation the best the concrete-steel bond if no cracking occurs. However, if splitting cracks appear, deeper indentations require a lower splitting load. Moreover, deeper indentations lead to wider crack opening, minor bond stress and longer transmission length.
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