Flexural Behavior of Concrete Columns Retrofitted with Carbon Fiber-Reinforced Polymer Jackets
Richard Sause, Kent A. Harries, Stephanie L. Walkup, Stephen Pessiki, and James M. Ricles
Appears on pages(s):
concrete; confinement; fibers; jackets; reinforced concrete; retrofit
A significant deficiency in many existing nonductile reinforced concrete frames is the inability of the columns to undergo significant deformations while maintaining their load-carrying capacity. As a result, relatively brittle modes of column failure, accompanied by soft story structural failure mechanisms, are possible. Providing additional confinement to the columns allows them to behave in a more ductile manner. The study reported herein investigates the use of carbon fiber-reinforced polymer (CFRP) composite jackets as a method of retrofitting existing nonductile reinforced concrete building columns. A method of designing fiber-reinforced polymer composite jackets for columns to achieve the desired flexural behavior is presented and verified through a full-scale experimental study.