CATHODIC PROTECTION FOR REINFORCED CONCRETE BRIDGE DECKS. LABORATORY PHASE.

被引：0
|
作者：
Vrable, John B.
机构：
来源：
National Cooperative Highway Research Program Report | 1977年 / 180期
关键词：
BRIDGES; HIGHWAY - CONCRETE REINFORCEMENTS - CORROSION PROTECTION; CATHODIC;
D O I：
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摘要：
The objective of the research reported was to develop a technically and economically feasible cathodic-protection method for steel-reinforced-concrete bridge decks. Studies were made of factors affecting the cathodic protection of steel reinforcement in concrete and of possible methods of using this approach to control corrosion on highway bridge-deck reinforcement. Both laboratory and model tests were conducted. Laboratory studies of the electrochemical behavior of steel in simulated concrete environments, with and without chloride, demonstrated that corrosion can be controlled by the application of cathodic current to corroding steel. Two basic approaches to cathodic protection, the impressed-current and sacrificial-anode methods, were thoroughly investigated by using an analog model of a reinforced bridge-deck section.
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