SHEAR STRENGTH AND DRIFT CAPACITY OF REINFORCED CONCRETE AND HIGH-PERFORMANCE FIBER REINFORCED CONCRETE LOW-RISE WALLS SUBJECTED TO DISPLACEMENT REVERSALS by Adamantia Athanasopoulou A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Civil Engineering) in The University of Michigan 2010 Doctoral Committee: Associate Professor Gustavo J. Parra-Montesinos, Chair Professor Sherif El-Tawil Professor James K. Wight Professor Alan S. Wineman