摘要: A study on the effects of rigid overlays on corrosion rate of steel in reinforcedconcrete bridge decks was carried out using three-electrode linear polarization (3LP) instrumentation. Corrosion currents were measured immediately p... 展开 A study on the effects of rigid overlays on corrosion rate of steel in reinforcedconcrete bridge decks was carried out using three-electrode linear polarization (3LP) instrumentation. Corrosion currents were measured immediately prior to placement of overlays, and one and two years after placement. Four latex modified concrete (LMC), three superplasticized dense concrete (SDC), and three condensed silica fume concrete (CFSC) overlays were included in the study. Results of the study indicate that for LMC and CSFC overlays there s a decrease of from 1 to 2 mA/sq. ft. in corrosion current after 2 years of service. The most consistent decreases were observed for the CSFC overlays. Results for the SDC overlays were less consistent. 收起