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Title |
Evaluation of Rebar Corrosion Due to Carbonation of Concrete
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Keywords |
carbonation; concrete cover; corrosion; durability; electrochemical nature; rebar; service life; water-binder ratio; wet-dry cycle |
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Abstract |
Recently, reinforced concrete structures exposed to severe enviroment are increased in metropolitan area. The acid rain and CO2 penetrated towad rebar, thus rebar corrosion occurred. The corrosion of rebar in concrete is, as in most corrosion processes, an electrochemical nature. The corrosion may severely affect on durability and service life of such a concrete structures. This study was performed for the purpose of acquiring data about corrosion condition and considering a countermeasure to prevent rebar from corroding due to carbonation of concrete. An accelerated car bonation testing procedure was applied to measure the evolution of carbonation and rebar corrosion with time for various water-binder ratios and cement types.
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