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Title: The need to enhance the standard test to determine bond properties of pretensioned concrete structures

Author(s): Vázquez Herrero, C.; Martínez Abella, F.

Publication: ACHE

Volume: 55

Issue: 231

Appears on pages(s): 21 - 33

Keywords: concrete, prestressed, pretensioned, reinforcement, bond, test.


Date: 1/1/2004

Bond between concrete and prestressing strand is essential to guarantee the correct structural behavior of the pretensioned concrete elements. At present Spanish Standard EHE (1998) establishes that transfer length and development length must be determined experimentally. However there is not a standard procedure to measure bond performance along the development length. In this article the basis of a new standard and economic test is discussed, which allows determination of bond properties of prestressing strand. A critical review of the different existing experimental procedures is done. Finally the general characteristics of a future standard test are established, in order to characterize bond properties along both transfer length and flexural bond length of pretensioned concrete elements.

ACI International Partner, ACHE Spain, International Partner Access

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