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- W75491696 abstract "Corrosion currents of reinforcing steel in bridge decks scheduled for rehabilitation with rigid concrete overlay systems were measured using a three-electrode linear polarization (3LP) device. Ten bridge decks in Ohio were included in the study. Overlays were then placed using latex-modified concrete (LMC), superplasticized dense concrete (SDC), and condensed silica fume concrete (CSFC). Corrosion currents were then remeasured 1 and 2 years after initial placement of the overlays. Results of the study indicate that corrosion currents can be measured in bare and overlaid concrete bridge decks using the commercially available 3LP instrumentation. The equipment is rugged, practical for field use, and capable of yielding reproducible results. The installation of rigid concrete overlays appears to have an effect on corrosion current in the steel present in the substrate deck. In the period covered by the present study (2 years after installation), corrosion currents appeared to decrease with time for most of the LMC and SCFC overlays. Results for SDC overlays were not as clear, a mix of increases and decreases being noted. Most consistent decreases in corrosion current throughout the study occurred for the CSFC overlays. This may be due to their generally lower permeability as opposed to LMC or SDC systems." @default.
- W75491696 created "2016-06-24" @default.
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- W75491696 date "1993-01-01" @default.
- W75491696 modified "2023-09-24" @default.
- W75491696 title "EFFECTS OF RIGID OVERLAYS ON CORROSION CURRENTS OF REINFORCING STEEL IN BRIDGE DECKS" @default.
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