Initiation and propagation of corrosion in dry-cast reinforced concrete ring specimens

• Other Authors: Seo, Bongjoon (author)
• Format: Others
• Language: English
• Published: Florida Atlantic University
• Subjects: Concrete > Deterioration; Concrete construction; Corrosion and anti corrosives; Reinforced concrete > Chemical resistance; Tubular steel structures > Deterioration
• Online Access: http://purl.flvc.org/fau/fd/FA00004226; http://purl.flvc.org/fau/fd/FA00004226

The corrosion propagation stage of D-CRP (types F and C) was tested under immersion in water, high humidity, and covered with wet sand. The half-cell potential, linear polarization test, and electrochemical impedance spectroscopy measurements were performed. Selected specimens were terminated after 300 days of exposure and visually inspected. Based on corrosion potential measurements obtained during the corrosion propagation observation, and calculated corrosion rate based on LPR measurements: all specimens were actively corroding. Additionally, EIS-Rc values were calculated for FS, CS and CH specimens. The Rc_EIS were generally greater than Rc_LPR values. EIS spectra for CI and FI specimens usually included mass transport limitations, as these specimens were immersed. Both type of specimens immersed in water (FI and CI), appeared to have higher corrosion rate based on LPR-Rc. However, upon autopsy it was revealed that a more modest amount of corrosion occurred on the reinforcing steel of FI and CI terminated specimens. === Includes bibliography. === Thesis (M.S.)--Florida Atlantic University, 2014. === FAU Electronic Theses and Dissertations Collection