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Full-Text Articles in Engineering
Analysis Of Three-Dimensional Pile Groups, M.T. Liang, Y. Liu
Analysis Of Three-Dimensional Pile Groups, M.T. Liang, Y. Liu
Journal of Marine Science and Technology
A numerical technique is presented in the analysis for loading behavior of general three-dimensional pile groups. The striking characteristics of the pile-group model may include raked pile, different pile sizes, non-uniform pile sections, soil inhomogeneit y, soil nonlinearity, and pile-soil-pile interaction. A typical six-pile group is analyzed and the results are compared with that obtained by four other computer programs that are based on different approaches. The computed solutions are shown to have reasonally good agreement with the measured values.
A Study Of Chloride Diffusion Properties Of Concrete At Early Age, W.D. Yeih, R. Huang, J.J. Chang
A Study Of Chloride Diffusion Properties Of Concrete At Early Age, W.D. Yeih, R. Huang, J.J. Chang
Journal of Marine Science and Technology
Existence of chloride ions in concrete may accelerate reinforcement corrosion. Chloride ions can penetrate into the concrete by the diffusion process even if no major cracks exist. It is well known that properties of concrete will change with time since the hydration reaction continues for a long time, which implies that the diffusion coefficient of concrete is a time-dependent function. In this research, the diffusion behavior is focused on early-age mortar and concrete. It is shown that the diffusion coefficient changes dramatically at early age; and the control of interface property is significantly important to chloride diffusion. The effect by …
The Use Of Ac And Dc Methods For Corrosion Monitoring Of Reinforced Concrete Members In Marine Environment, R. Huang, W.D. Yeih, J.J. Chang, C.C. Yang
The Use Of Ac And Dc Methods For Corrosion Monitoring Of Reinforced Concrete Members In Marine Environment, R. Huang, W.D. Yeih, J.J. Chang, C.C. Yang
Journal of Marine Science and Technology
Reinforced concrete is the most common engineering material for civil structures. The durability of the concrete structures depends mainly on the corrosion of steel reinforcement. In general, concrete produces an alkaline environment for steel which passivates it, so preventing corrosion. Provided this passivity is maintained, no problem should arise with steel reinforcement. However, in certain environment, chloride ions can locally destroy very protective passive film of reinforcement even though concrete is still alkaline. This paper presents the corrosion results of reinforcing steel in concrete members in marine environment using the AC impedance technique and DC method.