Study on the Correlation between Surface Resistivity and Accelerated Chloride Corrosion of Concrete

2021 ◽  
Author(s):  
Wensheng Wang ◽  
Hexiang Lei
Keyword(s):  
Surface Resistivity ◽  
Chloride Corrosion

Near-surface resistivity variations on Kahoolawe Island, Hawaii

1982 ◽  
Author(s):  
D.B. Hoover ◽  
C.L. Tippens ◽  
J.E. Cooke
Keyword(s):  
Surface Resistivity ◽  
Near Surface

Scattering by a semi-infinite resistive strip of dominant-mode propagation in an infinite rectangular wave-guide

1956 ◽  
Vol 52 (3) ◽  
pp. 553-563 ◽  
Author(s):  
V. M. Papadopoulos
Keyword(s):  
Electric Field ◽  
Digital Computer ◽  
Transverse Electric ◽  
Dominant Mode ◽  
Surface Resistivity ◽  
Wave Guide ◽  
Mode Propagation ◽  
Rectangular Wave ◽  
Electric Mode ◽  
Transverse Electric Mode

ABSTRACTThe scattering of the dominant transverse electric mode in an infinite perfectly conducting rectangular wave-guide by a semi-infinite resistive strip, centrally placed and parallel to the electric field, is calculated by the use of Laplace transforms. Formulae are derived for the amplitude of the scattered waves, and the numerical results, obtained using a digital computer, are given for various values of the surface resistivity of the strip.

scholarly journals Numerical Simulation of Non-Uniformly Distributed Corrosion in Reinforced Concrete Cross-Section

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3975
Author(s):  
Magdalena German ◽  
Jerzy Pamin
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Chloride Transport ◽  
Chloride Concentration ◽  
Corrosion Current ◽  
Chloride Diffusion ◽  
Chloride Diffusion Coefficient ◽  
Initiation Phase ◽  
Chloride Corrosion ◽  
Cover Thickness

Reinforced concrete structures can be strongly damaged by chloride corrosion of reinforcement. Rust accumulated around rebars involves a volumetric expansion, causing cracking of the surrounding concrete. To simulate the corrosion progress, the initiation phase of the corrosion process is first examined, taking into account the phenomena of oxygen and chloride transport as well as the corrosion current flow. This makes it possible to estimate the mass of produced rust, whereby a corrosion level is defined. A combination of three numerical methods is used to solve the coupled problem. The example object of the research is a beam cross-section with four reinforcement bars. The proposed methodology allows one to predict evolving chloride concentration and time to reinforcement depassivation, depending on the reinforcement position and on the location of a point on the bar surface. Moreover, the dependence of the corrosion initiation time on the chloride diffusion coefficient, chloride threshold, and reinforcement cover thickness is examined.

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