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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Shear Failure of Reinforced Concrete Beams and Effect of Repair by Epoxy Resin Injection
Author(s): Y. Ozaka and M. Suzuki
Publication: Special Publication
Appears on pages(s): 637-670
Keywords: beams (supports); damage; ductility; earthquakes;
epoxy resins; failure; reinforced concrete; repairs; shear
Abstract:Reinforced Concrete viaducts of the Tohoku Shinkansen suffered considerable damage especially in mid-height beams due to the Miyagi-ken-oki Earthquake (1978), and there were quite a number that would not have been able to withstand normal use without remedy. In this study the strength-deformation characteristics of 1/2- or l/3-scale model specimens of rigid-frame viaduct mid-height beams are obtained experimentally, and the bending shear characteristics of mid-height beams are examined. Further, various repair methods are applied to specimens loaded to different levels with crack width or displacement as the yardstick, and the effects are investigated. As a result, it is confirmed that member yielding load, resisting capacity, deformability, etc., are not less than those of the original member if repairs are made properly by injecting epoxy resin in cracked parts.
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