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The present study examines the
behavior of three major categories of organic coatings which are applied on the
surface of concrete structures and specifically conventional, high performance
and nanotechnology paint systems. The comparison is achieved in the means of
anticorrosion properties under the presence of chloride ions and carbonation resistance.
The evaluation methods included electrochemical measurements in order to assess
corrosion properties and the determination of steel’s mass loss after the end
of the experimental procedure. Carbonation depth was measured using
phenolphthalein as indicator after accelerated and physical exposure. From the
results so far it can be shown nanocoatings gave promising results regarding
induced chloride ion corrosion.
The objective of this paper is to investigate the behaviour of amino
alcohol corrosion inhibitors when they are used in reinforced cement mortars
either as admixtures in the cement paste or as coating applications on the
surface of the rebars.
The reinforced cement mortars were exposed to both partial and full immersion
in 3.5 wt% NaCl solution. Electrochemical measurements such as half-cell potential and linear
polarization technique, as well as weight loss of the embedded rebars were
performed in order to obtain information on the corrosion behaviour of the
reinforcing steel in cement mortar. Results demonstrate that the amino alcohol
corrosion inhibitors offer protection against rebar corrosion in cement
In this paper examines the improving durability of different limestone cement and effects of the use of corrosion inhibitor. The target is to experimentally investigate the effect of different types of cement in corrosion of reinforcement in presents of corrosion inhibitors and without it. Three types of cement have been used: CEM II, LC1 and LC2. For this purpose constructed mortar specimens, containing 4 reinforcements, with or without corrosion inhibitors for each group, these exhibited to partial immersion in sodium chloride in 3.5% w.t NaCl solution. The methods, with which the corrosion of reinforcement in concrete was tested, were measurements of corrosion potential, corrosion current and mass loss of reinforcement. The mortars with CEM II cement have better durability than that with limestone cement. The use of VpCI, Cyclohexylammonium benzoate, improves the corrosion protection of mortars with CEM II cement upper 50%. On the other hand, the addition of VpCI, Cyclohexylammonium benzoate, improves the corrosion protection of mortars with limestone cement 30% or lower.