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51314-4250-Protecting Concrete Rebar Using Admixture with Migratory Corrosion Inhibitor and Water Repellent

Product Number: 51314-4250-SG
ISBN: 4250 2014 CP
Author: Ming Shen
Publication Date: 2014
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Corrosion of embedded rebar in concrete can lead to the ultimate deterioration of a concrete structure. Corrosive electrolytes and species can penetrate concrete due to its porous nature. An admixture was developed employing synergistic blend of migratory corrosion inhibitors and water-proofing ingredients. The admixture enhances the protection by forming a protective film on rebar. In addition it reduces ingression of water soluble corrosive species. Electrochemical tests show that this admixture provides superior corrosion protection to the rebar. Additional test results demonstrate that the admixture reduces water permeability while does not negatively affect workability set time and mechanical properties of concrete.
Corrosion of embedded rebar in concrete can lead to the ultimate deterioration of a concrete structure. Corrosive electrolytes and species can penetrate concrete due to its porous nature. An admixture was developed employing synergistic blend of migratory corrosion inhibitors and water-proofing ingredients. The admixture enhances the protection by forming a protective film on rebar. In addition it reduces ingression of water soluble corrosive species. Electrochemical tests show that this admixture provides superior corrosion protection to the rebar. Additional test results demonstrate that the admixture reduces water permeability while does not negatively affect workability set time and mechanical properties of concrete.
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