It covers repair mortars and concretes, possibly used in conjunction with other products and systems, to restore or to replace defective concrete and to protect reinforcement, necessary to extend the service life of a concrete structure exhibiting deterioration. The repair methods covered by this document are the following: concrete restoration by applying repair mortars by hand; concrete restoration by recasting with concrete; concrete restoration by spraying on mortar or concrete; concrete strengthening by adding mortar or concrete; improving physical resistance by application of overlays of mortar or concrete; improving chemical resistance by application of overlays of mortar or concrete; restoring passivation by increasing cover by adding mortar or concrete; restoring passivation by replacing carbonated cover by adding mortar or concrete.