ABSTRACT

This chapter discusses the options for rehabilitating our corrosion damaged reinforced concrete structures. We will start by examining the conventional repairs by concrete removal and replacement. Removal techniques such as pneumatic hammers, hydrojetting and milling and their limitations are discussed. The problems of conventional repair such as continued corrosion and structural considerations are covered, along with coatings, sealers, membranes and barriers. Encasement, overlays, corrosion inhibitors are also covered in terms of corrosion performance. Mix designs and concrete chemistry is not be discussed in detail as that information is better covered elsewhere (see, for instance, SHRP-C-345 Synthesis of current and projected concrete highway technology (Whiting et al., 1993 or Emberson and Mays, 1990).