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Full-Text Articles in Civil and Environmental Engineering
Rfid Tags For Detecting Concrete Degradation In Bridge Decks, Tyler J. Lesthaeghe, Samuel Frishman, Stephen D. Holland, Terry J. Wipf
Rfid Tags For Detecting Concrete Degradation In Bridge Decks, Tyler J. Lesthaeghe, Samuel Frishman, Stephen D. Holland, Terry J. Wipf
Tyler J Lesthaeghe
Steel reinforcing bar (rebar) corrosion due to chlorine ingress is the primary degradation mechanism for bridge decks. In areas where rock salt is used as a de-icing agent, salt water seeps into the concrete through cracks, causing corrosion of the rebar and potentially leading to catastrophic failure if not repaired. This project explores the use of radio frequency identification (RFID) tags as low-cost corrosion sensors. RFID tags, when embedded in concrete, will fail due to corrosion in the same manner as rebar after prolonged exposure to salt water. In addition, the presence of salt water interferes with the ability to …
Conductive Concrete Overlay For Bridge Deck Deicing, Sherif Yehia, Christopher Tuan
Conductive Concrete Overlay For Bridge Deck Deicing, Sherif Yehia, Christopher Tuan
Christopher Y. Tuan
Concrete bridge decks are prone to ice accumulation. The use of road salts and chemicals for deicing is an effective method for ice removal, but causes damage to concrete and corrosion of reinforcing steel in concrete bridge decks. This problem is a major concern to transportation officials and public works due to rapid degradation of existing concrete pavements and bridge decks. The use of insulation materials for ice control and electric or thermal heating for deicing have been attempted and met limited success. Conductive concrete may be defined as a cementitious composite that contains a certain amount of electronically conductive …
Roca Spur Bridge: The Implementation Of An Innovative Deicing Technology, Christopher Tuan
Roca Spur Bridge: The Implementation Of An Innovative Deicing Technology, Christopher Tuan
Christopher Y. Tuan
The heated deck of Roca Spur Bridge is the first implementation in the world using conductive concrete for deicing. Conductive concrete is a concrete mix containing a certain amount of electrically conductive components in a regular concrete matrix, designed to enable conduction of electricity. Due to its electrical resistance, conductive concrete can generate enough heat to prevent ice formation on a paved surface when connected to a power source.
Forward Time Domain Ground Penentrating Radar Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli, Sara Wadia-Fascetti, Carey Rappaport
Forward Time Domain Ground Penentrating Radar Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli, Sara Wadia-Fascetti, Carey Rappaport
Sara J. Wadia-Fascetti
Ground penetrating radar (GPR) for nondestructive testing is a relatively young technology, especially with application to civil infrastructure such as bridges and roadways. Conventional methods of processing and analyzing GPR data for civil infrastructure are often qualitative, using relative reflection amplitude from subsurface boundaries or reinforcing steel (rebars) as an indicator of health. This poster brings well understood electrical engineering analysis tools to the application of nondestructive testing of bridges using GPR. Using iterative forward modeling to improve upon conventional permittivity and depth calculations, a computational model geometry is computed for the assumed bridge deck with no anomalies present. A …
Forward Time Domain Ground Penentrating Radar Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli, Sara J. Wadia-Fascetti, Carey Rappaport
Forward Time Domain Ground Penentrating Radar Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli, Sara J. Wadia-Fascetti, Carey Rappaport
Kimberly Belli
Ground penetrating radar (GPR) for nondestructive testing is a relatively young technology, especially with application to civil infrastructure such as bridges and roadways. Conventional methods of processing and analyzing GPR data for civil infrastructure are often qualitative, using relative reflection amplitude from subsurface boundaries or reinforcing steel (rebars) as an indicator of health. This poster brings well understood electrical engineering analysis tools to the application of nondestructive testing of bridges using GPR. Using iterative forward modeling to improve upon conventional permittivity and depth calculations, a computational model geometry is computed for the assumed bridge deck with no anomalies present. A …
Forward Time Domain Gpr Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli
Forward Time Domain Gpr Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli
Kimberly Belli
Ground penetrating radar (GPR) for nondestructive testing is a relatively young technology, especially with application to civil infrastructure such as bridges and roadways. Conventional methods of processing and analyzing GPR data for civil infrastructure are often qualitative, using relative reflection amplitude from subsurface boundaries or reinforcing steel (rebars) as an indicator of health. This poster brings well understood electrical engineering analysis tools to the application of nondestructive testing of bridges using GPR. Using iterative forward modeling to improve upon conventional permittivity and depth calculations, a computational model geometry is computed for the assumed bridge deck with no anomalies present. A …
Forward Time Domain Ground Penentrating Radar Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli, Sara J. Wadia-Fascetti, Carey Rappaport
Forward Time Domain Ground Penentrating Radar Modeling Of Bridge Decks For Detecting Deterioration, Kimberly Belli, Sara J. Wadia-Fascetti, Carey Rappaport
Carey Rappaport
Ground penetrating radar (GPR) for nondestructive testing is a relatively young technology, especially with application to civil infrastructure such as bridges and roadways. Conventional methods of processing and analyzing GPR data for civil infrastructure are often qualitative, using relative reflection amplitude from subsurface boundaries or reinforcing steel (rebars) as an indicator of health. This poster brings well understood electrical engineering analysis tools to the application of nondestructive testing of bridges using GPR. Using iterative forward modeling to improve upon conventional permittivity and depth calculations, a computational model geometry is computed for the assumed bridge deck with no anomalies present. A …