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International Concrete Abstracts Portal


Title: Strengthening of Reinforced Concrete Chimneys, Columns and Beams with Carbon Fiber Reinforced Plastics

Author(s): Craig Ballinger, Toshikatsu Maeda, and Tokitaro Hoshijima

Publication: Symposium Paper

Volume: 138


Appears on pages(s): 233-248

Keywords: bridge piers; bridges (structures); carbon; chimneys; concretes; columns (supports); composite materials; fiber reinforced plastics; floors; glass fibers; strengthening; wrapping; General

Date: 9/1/1993

Presents information on the development and use of carbon fiber reinforced plastic (CFRP) to strengthen reinforced concrete chimneys, bridge piers, and beams in Japan; bridge beams in Switzerland; and ongoing structural research and use of fiber reinforced plastic (FRP) composite materials to strengthen such structures in the U.S. The concept and equipment for strengthening existing reinforced concrete chimneys by wrapping them with carbon reinforced plastic materials began in Japan. The procedure permitted earthquake-damaged chimneys to be repaired without taking them out of service. Research in Switzerland has led to the use of adhesively bonded sheets of carbon reinforced plastic laminates to strengthen existing bridges. This concept is an extension of use of bonded steel plates to strengthen many types of structures throughout Europe. Research, development, and some use of these techniques has been done in the U.S.


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