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  • Assessing the seismic performance of corroding RC bridge columns

    Creator:
    Guo, Yisen
    Abstract:
    Corrosion of reinforcement is recognized as the predominant factor that limits the service life of reinforced concrete (RC) structures exposed to aggressive environments. This corrosion deterioration can lead to damage resulting in capacity loss or even failure. For structures exposed to coastal marine environments or deicing or anti-icing applications, this...
    Resource Type:
    Masters Thesis
    Full Text:
    reinforced concrete (RC) structures exposed to aggressive environments. This corrosion deterioration can

  • Shear capacity assessment of corrosion-damaged reinforced concrete beams

    Creator:
    Farrow, William C.
    Abstract:
    The research presented here is a study to determine the effect of shear reinforcement corrosion on the shear capacity in conventionally reinforced concrete (CRC) bridge elements. A total of 14 CRC beams were tested using three stirrup spacings (8, 10, and 12-inch). Six of the beams included the influence of...
    Resource Type:
    Masters Thesis
    Full Text:
    Assessment of Corrosion-Damaged Reinforced Concrete Beams Abstract Approved: Christopher C. Higgins The

  • Seismic Performance of Square Reinforced Concrete Columns Retrofitted with Titanium Alloy Bars

    Creator:
    Lostra, Mackenzie M. W.
    Abstract:
    Large numbers of reinforced concrete (RC) bridges were built in the past that are now considered seismically deficient. The structural members most likely to be considered deficient are the supporting columns. Typical deficient columns contain inadequate transverse reinforcement and poorly detailed lap splice lengths above the foundation. Insufficient lap splice...
    Resource Type:
    Masters Thesis
    Full Text:
    reinforcement bars and the surrounding concrete reduces the stiffness and strength of the column-footing joint

  • Seismic performance of reinforced concrete bridge columns constructed with grade 80 reinforcement

    Creator:
    Link, Tim B.
    Abstract:
    The research presented in this thesis assessed the use of high strength steel (HSS) reinforcement for use in reinforced concrete (RC) bridge columns. HSS is not currently allowed in reinforced concrete bridge columns due to a lack of information on the material characteristics and performance information when used in RC...
    Resource Type:
    Masters Thesis
    Full Text:
    Photograph of column G80-1 crack mapping and concrete spalling ........... 33 Figure 2.6 Shear force versus

  • Finite element modeling of reinforced concrete bridge columns with steel jackets using plastic hinge integration

    Creator:
    Carlton, Adam K.
    Abstract:
    In recent years confinement requirements for concrete columns have increased in seismic regions. Steel jackets are one way to confine reinforced concrete columns. The increased confinement provides additional strength and ductility for the columns during seismic events. For reinforced concrete columns with steel jackets, there are different section properties in...
    Resource Type:
    Masters Thesis

  • Testing and evaluation of flexural reinforcing bars terminating in columns

    Creator:
    Koester, Carl C.
    Abstract:
    Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent caps with large straight bar anchorages were investigated and evaluated. Eleven subassemblage column specimens were examined with different anchorage lengths, bar groupings, amount of transverse steel, and externally applied axial force. Test results showed an increase in anchorage capacity...
    Resource Type:
    Masters Thesis
    Full Text:
    concrete column sections. The column geometry investigated was 24 x 24 x 72 in. (610 x 610 x 1829 mm

  • Synergistic Effects of Alkali Silica Reaction (ASR) and Fly Ash on the Corrosion Characteristics of Reinforced Concrete Systems

    Creator:
    Mazarei, Vandad
    Abstract:
    Alkali silica reaction (ASR) and corrosion of reinforcement are two deterioration mechanisms in reinforced concrete (RC) structures. These deterioration mechanisms can significantly damage a RC structure and reduce its service life. Supplementary cementitious materials (SCMs) are commonly used to improve the durability of RC systems containing reactive aggregate that are...
    Resource Type:
    Masters Thesis
    Full Text:
    Ash on the Corrosion Characteristics of Reinforced Concrete Systems

  • Evaluation of cathodic protection in reinforced concrete bridges

    Creator:
    Abooameri, Farid
    Abstract:
    Steel corrosion in reinforced concrete is a major concern to transportation agencies nationwide because of the expenses incurred for repair and ultimate shortening of bridge life. Cathodic protection (CP), as a remedy, has been applied to reinforced bridges in the US since 1974. However, application of this technique is largely...
    Resource Type:
    Masters Thesis
    Full Text:
    Bridges Abstract approved: Milo D. Koretsky Steel corrosion in reinforced concrete is a major concern