Corrosion of reinforcement in concrete : the effectiveness of organic corrosion inhibitors

Reinforcement corrosion in concrete has presented engineers with the challenge of finding ways of prolonging the service life of structures built in aggressive environments. One method of increasing the durability of concrete in aggressive environments is the use of corrosion inhibitors. In this work, two organic corrosion inhibitors were tested to observe their effectiveness in decreasing the rate of corrosion or delaying the onset of corrosion. One of the inhibitors was a migrating corrosion inhibitor while the other was an admixed inhibitor. The corrosion rate of reinforcement in concrete specimens used in this evaluation, was measured using the Linear Polarisation Resistance method. The performance of the admixed inhibitor was also measured in aqueous phase tests. Results of the tests conducted indicate that the admixed inhibitor does delay the onset of corrosion. The Mel caused short to medium term inhibition when the chloride concentration was less than 1.5%.

Grantor dc:publisher.institution

Department of Mechanical Engineering

Year dc:date.issued

1999

Author dc:creator

• Rylands, Thaabit

Advisor dc:contributor.advisor

• Mackechnie, James R

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/9946

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/9946