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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



Date: 1/3/1999

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.

ACI International Partner, ACHE Spain, International Partner Access

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