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51314-4336-Organofunctional Silane Inhibitor Surface Treatment for Mitigating Corrosion of Steel in Concrete—Autopsy Results

Picture for Organofunctional Silane Inhibitor Surface Treatment for Mitigating Corrosion of Steel in Concrete—Au
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Product Number: 51314-4336-SG
ISBN: 4336 2014 CP
Author: Neal Berke
Publication Date: 2014
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Repair of aging structures is one of the major problems facing those responsible for maintaining our infrastructure economically. This is especially important for steel reinforced concrete structures that are beginning to fail due to corrosion of the steel from repeated exposure to chloride deicing salts or carbonation. To a large extent the choices have been the implementation of a cathodic protection system or extensive concrete repairs. The authors showed in a previous paper that there was a significant decrease in measured corrosion activity and cracking in slabs with an organofunctional silane corrosion inhibitor surface post-treatment versus untreated slabs. The treatment was shown to be a cost effective viable concrete repair alternative. In this paper the results of the slab autopsies are presented. These data support the conclusions made from the electrochemical corrosion measurements and visible cracking on the surface.
Repair of aging structures is one of the major problems facing those responsible for maintaining our infrastructure economically. This is especially important for steel reinforced concrete structures that are beginning to fail due to corrosion of the steel from repeated exposure to chloride deicing salts or carbonation. To a large extent the choices have been the implementation of a cathodic protection system or extensive concrete repairs. The authors showed in a previous paper that there was a significant decrease in measured corrosion activity and cracking in slabs with an organofunctional silane corrosion inhibitor surface post-treatment versus untreated slabs. The treatment was shown to be a cost effective viable concrete repair alternative. In this paper the results of the slab autopsies are presented. These data support the conclusions made from the electrochemical corrosion measurements and visible cracking on the surface.
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This paper describes the evaluation of the Organofunctional silanes in mitigating ongoing corrosion due to chlorides or carbonation.
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