In this work, a special biaxial testing set up is designed and used along with some simplified test techniques to study the behavior of repaired concrete. Patched and nonpatched specimens are investigated under biaxial tension-compression states of stress. Different patch configurations, transition and rectangular, along with different patch depths are considered. It is concluded that higher strength is achieved using specimens of transition patch shapes than in the rectangular ones. In both cases, it is noticed that the strength of the patched concrete specimens decreases as the patch depth increases.