The life of a concrete bridge exposed to deicing salt or seawater has often been limited by corrosion of the steel reinforcement. The service life of a concrete structure, degraded by corrosion, is considered to be the sum of the initiation and propagation periods. The initiation phase is the time required for sufficient accumulation of aggressive species at the rebar surface to initiate corros...

This paper describes an alternative finite element model that would yield more accurate results in the prediction of the behavior of Profiled Steel Sheet Dry Board (PSSDB) folded plate structures, which can be considered as an improvement of an earlier proposed model. The PSSDB folded plate structures are being proposed as an alternative to traditional forms of roof construction.The PSSDB syste...

Clad rebars of four different base materials (20MnSiV, 35# steel, 45# and 55# steel) were successfully produced by a vacuum hot rolling process. A metallographic optical microscope (OM), electron backscatter diffractometer (EBSD), probe micro-analyzer (EPMA), salt spray corrosion chamber used to investigate the clad contour, properties, composite interface microstructure all rebars. The results...

Steel sheet piling, typically used for retaining structures in the United States, is a potential alternative for use as the primary component in low-volume road (LVR) bridge substructures. To investigate the viability of sheet pile abutments, a demonstration project was performed in Black Hawk County, Iowa. The project involved construction of a 40 ft single-span bridge utilizing axially loaded...

CRA-lined pipelines, i.e. pipes with an inner pipe of a corrosion resistant alloy inside of a ferritic steel pipe carrying the hoop stress, pose a challenge to inspect with conventional in-line inspection technologies. Existing UT technology is not able to inspect through the interface of a CRA and a ferritic steel component. Additionally, current MFL technology is not able to sufficiently magn...