組紐状アラミド繊維補強材を用いたPRC梁の曲げ性状に関する実験的研究

概要

論文の詳細を見る
Recently, many kinds of fibre rods for concrete reinforcement have been developed in Japan. Generally fibre rods are characterized by elastic behaviour, high strength, low rigidity, and low bond strength to concrete. To improve bond strength, the authors employed a braiding process in manufacturing fibre rods. Flexural tests of partially prestressed concrete beams using braided aramid fibre rods (main reinforcement and prestressing tendons) were conducted. The test results demonstrated that prestressing was effective for reinforcements which had the properties of high strength and low rigidity. Because aramid rods are perfectly elastic, beams had three flexural failure modes namely concrete crashing, breaking of the tendons, and breaking of the main reinforcement. The paper also discusses the effects of prestressing force, strain compatibility condition between rods and concrete, and variation of material properties on the strength and failure modes of the beams.
社団法人日本建築学会の論文
1991-02-28