This study is mainly to investigate the effect of rubberized asphalt coating on the corrosion prevention of steel embedded in ordinary Portland cement concrete beam. The parameters are whether the steel bar coated with rubberized asphalt or not, as well as the corrosion behavior of steel embedded in concrete beam under static and repeated loading. The concrete beam is designed according to ACI 318-89 code with the requirement of w/c ratio less than 0.4 and fc>5000 psi , and by densified mixture design algorithm (DMDA). The test results indicate that before concrete crack, the concrete cover provide excellent protection effect to prevent the steel from corrosion. However, after beam cracked, the concrete protection layer no longer provides protection for steel, and it is corroded immediately. In such case, the rubberized asphalt coating then takes turn to prevent the steel from corrosion.
This study is mainly to investigate the effect of rubberized asphalt coating on the corrosion prevention of steel embedded in ordinary Portland cement concrete beam. The parameters are whether the steel bar coated with rubberized asphalt or not, as well as the corrosion behavior of steel embedded in concrete beam under static and repeated loading. The concrete beam is designed according to ACI 318-89 code with the requirement of w/c ratio less than 0.4 and fc>5000 psi , and by densified mixture design algorithm (DMDA). The test results indicate that before concrete crack, the concrete cover provide excellent protection effect to prevent the steel from corrosion. However, after beam cracked, the concrete protection layer no longer provides protection for steel, and it is corroded immediately. In such case, the rubberized asphalt coating then takes turn to prevent the steel from corrosion.
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