Journal of Materials Science and Engineering with Advanced TechnologyAuthor's: Pedro Romano and Paulo S. D. Brito
Pages: [77] - [91]
Received Date: November 10, 2014
Submitted by:
The present work has as its purpose the comparison of the behaviour of
three steel solutions against the behaviour of steel currently used in
concrete structures subject to the action of chlorides. Steel coated
with acrylic paint, galvanized steel and protected by imposed current
steel were adopted.
Tests were performed in the laboratory with concrete specimens that
were monitored with sensors installed that enabled to measure the
resistance of polarization, the potential for corrosion and the ionic
resistivity of concrete. During the tests, the chloride content of the
concrete was determined.
The results obtained allow us, in the first place, to identify the
different stages of deterioration of reinforced concrete structures
subject to attack by chlorides, namely, the identification of the
initiation stage of the process of steel corrosion. On the other hand,
it was found that steel coating with acrylic paint slightly slows the
onset of reinforcement corrosion, but does not prevent its rapid
spread. That galvanized steel display a good long-term behaviour and
that the cathodic protection delays chloride ion arrival to the steel
surface.
monitoring, reinforced concrete, coated steel, chlorides.
