Partial-depth repairs are a rehabilitation method commonly performed on concrete pavements and bridge decks to restore the integrity of the structure. However, in the past, partial-depth repairs have not always achieved their expected life. Some contributing factors include poor construction practices and the use of nondurable repair materials. Another consideration not previously considered is the compatibility between the in-situ concrete and the repair material. Additional stress is generated at the interface between the repair material and the existing concrete when the two materials deform at differently rates. This has the potential to occur when the elastic modulus, thermal coefficient of expansion and/or the drying shrinkage of the repair material is significantly different from that of the existing concrete. The focus of this study is on investigating the effects of the incompatibility between the repair and existing concrete through a laboratory investigation and a computational study. Then a methodology was established for developing a performance engineered repair material (PERM) to be used for performing a material compatible repair (MCR). This is accomplished through the proper selection of a coarse aggregate so that stiffness and thermal compatibility between the repair material and the existing concrete is assured. Internal curing was also investigated to reduce the drying shrinkage of the repair material to minimize the potential for debonding between the repair and the older existing concrete.