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Articles 1 - 4 of 4
Full-Text Articles in Civil Engineering
Use Of Fiber Reinforced Polymer Composite Cable For Post-Tensioning Application, Xiong Yang
Use Of Fiber Reinforced Polymer Composite Cable For Post-Tensioning Application, Xiong Yang
FIU Electronic Theses and Dissertations
Corrosion of steel tendons is a major problem for post-tensioned concrete, especially because corrosion of the steel strands is often hard to detect inside grouted ducts. Non-metallic tendons can serve as an alternative material to steel for post-tensioning applications. Carbon fiber reinforced polymer (CFRP), given its higher strength and elastic modulus, as well as excellent durability and fatigue strength, is the most practical option for post-tensioning applications.
The primary objective of this research project was to assess the feasibility of the use of innovative carbon fiber reinforced polymer (CFRP) tendons and to develop guidelines for CFRP in post-tensioned bridge applications, …
The Performance And Service Life Prediction Of High Performance Concrete In Sulfate And Acidic Environments, Shuo Zhang
The Performance And Service Life Prediction Of High Performance Concrete In Sulfate And Acidic Environments, Shuo Zhang
FIU Electronic Theses and Dissertations
Concrete substructures are often subjected to environmental deterioration, such as sulfate and acid attack, which leads to severe damage and causes structure degradation or even failure. In order to improve the durability of concrete, the High Performance Concrete (HPC) has become widely used by partially replacing cement with pozzolanic materials. However, HPC degradation mechanisms in sulfate and acidic environments are not completely understood. It is therefore important to evaluate the performance of the HPC in such conditions and predict concrete service life by establishing degradation models.
This study began with a review of available environmental data in the State of …
Dynamic Behavior And Fatigue Life Of Highway Bridges Due To Doubling Heavy Vehicles, Arash Tarighi
Dynamic Behavior And Fatigue Life Of Highway Bridges Due To Doubling Heavy Vehicles, Arash Tarighi
FIU Electronic Theses and Dissertations
An increase in the demand for the freight shipping in the United States has been predicted for the near future and Longer Combination Vehicles (LCVs), which can carry more loads in each trip, seem like a good solution for the problem. Currently, utilizing LCVs is not permitted in most states of the US and little research has been conducted on the effects of these heavy vehicles on the roads and bridges. In this research, efforts are made to study these effects by comparing the dynamic and fatigue effects of LCVs with more common trucks.
Ten Steel and prestressed concrete bridges …
Large-Scale Testing To Study The Effects Of Critical Parameters On The Aerodynamic Behavior Of Long Span Bridges, Ramtin Kargarmoakhar
Large-Scale Testing To Study The Effects Of Critical Parameters On The Aerodynamic Behavior Of Long Span Bridges, Ramtin Kargarmoakhar
FIU Electronic Theses and Dissertations
Long-span bridges are flexible and therefore are sensitive to wind induced effects. One way to improve the stability of long span bridges against flutter is to use cross-sections that involve twin side-by-side decks. However, this can amplify responses due to vortex induced oscillations.
Wind tunnel testing is a well-established practice to evaluate the stability of bridges against wind loads. In order to study the response of the prototype in laboratory, dynamic similarity requirements should be satisfied. One of the parameters that is normally violated in wind tunnel testing is Reynolds number. In this dissertation, the effects of Reynolds number on …