EU environmental directives and their implications for maintenance dredging
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Published:2002
N Davison, A C Roberts, J M Taylor, 2002. "EU environmental directives and their implications for maintenance dredging", Challenges of Concrete Construction: Volume 3, Repair, Rejuvenation and Enhancement of Concrete: Proceedings of the International Seminar held at the University of Dundee, Scotland, UK on 5–6 September 2002, Ravindra K. Dhir, M. Roderick Jones, Li Zheng
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The corrosion of reinforcing steel in concrete structures is a global problem. A number of highly technical repair materials are now available to repair concrete structures suffering steel corrosion damage. Often, however, an incipient corrosion problem remains in untreated contaminated areas that may lead to subsequent failure. This paper describes a number of electrochemical systems, which can be applied to corrosion susceptible structures, which focus on addressing the fundamental electrochemical nature of corrosion. A system for enhancing longevity of patch repairs to reinforced concrete is discussed with particular reference to its ability to overcome incipient anode formation. A cost effective extension of this technology to globally treat corroding reinforced concrete structures will also be discussed. An example of the application of galvanic corrosion protection technology to reinforced concrete piles in a marine environment will be presented. Finally the use of an Impressed Current Cathodic Protection (ICCP) system using discrete anodes will be discussed.
INTRODUCTION
DISCRETE GALVANIC ANODES IN CONCRETE PATCH REPAIR
DISCRETE GALVANIC ANODES IN GLOBAL CORROSION PROTECTION
GALVANIC PROTECTION IN THE MARINE ENVIRONMENT
DISCRETE ICCP ANODES
SUMMARY
REFERENCES
