Experimental Study on Friction Factor for Fiber Reinforced Polymer Tendons in Pretensioned Prestressed Concrete Members

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Title: Experimental Study on Friction Factor for Fiber Reinforced Polymer Tendons in Pretensioned Prestressed Concrete Members

Author(s): M. Khin, M. Tanaka, K. Venkataramana, and T. Harada

Publication: Special Publication

Volume: 188

Issue:

Appears on pages(s): 856-864

Keywords: bond; fiber reinforced polymers; friction coefficient;

Date: 8/1/1999

Abstract:
In this paper, an experimental study on the frictional coefficient of fiber reinforced polymer (FRP) tendons is made and reported. Tests on FRP tendons fixed in cement mortar and confined with highly expansive material (HEM), and placed all together inside a steel sleeve pull-out test were conducted. Tests were carried out at various levels of confining pressure. The initial bond and the friction coefficient are presented for the FRP tendon with the surrounding HEM. A newly developed pressure transducer was placed in the same manner as the FRP tendon to monitor the confining pressure due to the HEM. The previous results are compared with the present one on Carbon FRP are reported using this monitoring system. The Vinyl on FRP is tested for the first time and the large size Carbon FRP are also introduced as they are prime candidates for use in practice.