Plain and Steel-Reinforced Concrete Shear Walls With and Without CFRP Retrofitting

Date of Award

Fall 2010

Document Type


Degree Name

Master of Science (MS)


Civil & Environmental Engineering


Civil Engineering

Committee Director

Zia Razzaq

Committee Member

Isao Ishibashi

Committee Member

M. B. Sirjani

Call Number for Print

Special Collections LD4331.E542 A46 2010


This thesis presents the outcome- of a study of the behavior and strength of plain and steel-reinforced concrete shear walls with and without a window opening and Carbon Fi.her-Reinforced Polymer (CFRP) retrofitting. A total of seven tests were conducted using six different shear walls. Each wall was subjected to a gradually increasing static load at one of it's top corners until the maximum load was reached. The load-deflection relations and the walls' failure patterns were observed and recorded. It was found that the window opening in the plain concrete wall reduced the wall load capacity by 18 percent. For the wall without an opening, CFRP retrofitting provided a dramatic 63.4 percent increase in the ultimate strength. The steel reinforced wall with an opening experienced a surprising 21 percent reduction in the ultimate load relative to that for the plain concrete wall. It was also found that the ACI Code is seriously unconservative for the plain concrete wall without opening; however, it is conservative for the steel-reinforced wall. Likewise, the ETABS software based on the finite element method gave seriously flawed load-deflection curves. On the contrary, a strut-and-tie model developed and presented in this thesis for the steel reinforced wall without opening is found to be in good agreement with the experimental results.


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