ABSTRACT
The aim of the concrete repair or overlay is to prolong the useful service life of the deteriorated/distressed structure or its element, to restore the load-carrying capacity and the stiffness, and to strengthen the structure or its member. Consequently, monolithic action in the composite repair structure is the final aim. A prerequisite for monolithic action is sufficient lasting bond between the existing substrate and the new-cast material. In this respect, of critical importance to the efficiency of the composite repair system is the concrete surface preparation prior to application of the repair material.
