Development of Continuous Fiber Flexible Reinforcement


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Title: Development of Continuous Fiber Flexible Reinforcement

Author(s): T. Sugiyama, S. Tomita, S. Kouzaki, Y. Sato, T. Ueda, and A. Kobayashi

Publication: Special Publication

Volume: 188


Appears on pages(s): 14-22

Keywords: carbon; fibers; reinforced polymer

Date: 8/1/1999

The authors have developed a continuous fiber flexible reinforcement (CFFR) which has good workability and can be used as a reinforcement in concrete. It consists of a plastic tube containing continuous fiber bundles and resin. The salient feature of this new material is that it can be easily formed at the construction site. The authors have conducted a study of fabrication methods of the material and an evaluation of its mechanical properties. This paper introduces the material and fabrication methods, and details the tensile strength of a member formed from this material. A member bent into a U shape was subjected to a load test to examine its basic properties. As a result, it was found that even when the material was bent, the applied tensile load was transmitted through it. Also, the load-deflection characteristic of the material and the stress concentration due to bending were influenced by the wall thickness of the plastic tube.