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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Seismic Bahavior Of Reinforced Concrete Liquid Storage Tanks, Iman Shawky Abdel-Rahman
Seismic Bahavior Of Reinforced Concrete Liquid Storage Tanks, Iman Shawky Abdel-Rahman
Archived Theses and Dissertations
This thesis presents a study of the effects of seismic loading on reinforced concrete liquid storage tanks. Stresses and displacements were computed by the finite element method to ascertain that they remain within an acceptable safety range when the tank is subjected to earthquake ground accelerations of varying intensities. In the analysis different parameters were considered. This included tank radius, liquid height, and shell thickness, loading conditions resulting from both hydrostatic and hydrodynamic pressures, and a variety of boundary conditions at the top and bottom of the tank, including a cover dome. The finite element package (ABAQUS) was used to …
Assessment Of Chloride Ingress Into Concrete, Mohamed Tamer Farouk Bassuoni
Assessment Of Chloride Ingress Into Concrete, Mohamed Tamer Farouk Bassuoni
Archived Theses and Dissertations
The corrosion of steel reinforcement has been a prime concern for concrete users. Chloride ingress into the concrete matrix disturbs the passive layers in the vicinity of steel, which results in corrosion initiation. Cementitious materials were successfully implemented in concrete mixtures to enhance their properties and minimize chloride permeability into concrete. Although numerous tests and techniques have been developed over the past years, reliable assessment of chlorides remains a challenging task. Th.is study aims at enhancing the understanding of techniques used for the assessment of chloride ingress and investigating potential correlation between these techniques. The study comprised eighteen mixtures made …
Microwave Reflection And Dielectric Properties Of Mortar Subjected To Compression Force And Cyclically Exposed To Water And Sodium Chloride Solution, Shanup Peer, Joseph Toby Case, Eric Gallaher, K. E. Kurtis, R. Zoughi
Microwave Reflection And Dielectric Properties Of Mortar Subjected To Compression Force And Cyclically Exposed To Water And Sodium Chloride Solution, Shanup Peer, Joseph Toby Case, Eric Gallaher, K. E. Kurtis, R. Zoughi
Electrical and Computer Engineering Faculty Research & Creative Works
Corrosion of the reinforcing steel is a major cause of damage and deterioration in reinforced concrete structures such as concrete bridge decks and columns. Chloride intrusion into concrete can lead to depassivation of the steel and initiation of corrosion. Thus, it is very important to be able to nondestructively detect and evaluate the free chloride content in concrete. Near-field microwave nondestructive testing techniques, using open-ended rectangular waveguide probes, have shown great potential for evaluating various properties of concrete, including the successful detection of sodium chloride added to mortar mixing water. In this study, several mortar samples are cyclically soaked in …
Initial Study For Cost-Effectiveness Of Joint/Crack Sealing, Chuanxin Fang, Khaled A. Galal, David R. Ward, John E. Haddock
Initial Study For Cost-Effectiveness Of Joint/Crack Sealing, Chuanxin Fang, Khaled A. Galal, David R. Ward, John E. Haddock
JTRP Technical Reports
The sealing and resealing of joints and cracks in PCC, HMA, and composite pavements is assumed to be an important component of pavement maintenance. Recently this practice has been challenged by research indicating that sealing may not be cost-effective. The Indiana Department of Transportation currently spends approximately four million dollars annually to perform joint/crack sealing. The primary objective of the research presented in this report is to investigate the costeffectiveness of joint/crack sealing in relation to pavement performance. The results of a mail survey showed that most states, including Indiana, do not have quantitative justification for sealing policies, nor do …