THE TOTAL SYSTEM CONCEPT -- NECESSARY FOR IMPROVING THE PERFORMANCE OF REPAIRED STRUCTURES

Abstract

The long-term performance of repaired concrete structures can be achieved on a system basis only -- starting with a proper design and specification, taking into account the demands of the environment, selection of compatible materials, production technology, and quality control of all materials and operations. The response of the repair system to the changes exerted by the repair must be understood for the successful design and construction of durable concrete repairs. Repair materials with relatively low strength, low shrinkage, high creep, and low modulus of elasticity are the most desirable for nonstructural, protective repairs. A cumulative result of the combination of such properties is a repair with higher strain capacity and minimal cracking.