scholarly journals OUTDOOREXPOSURE TEST ON THE RATE OF CORROSION OF REINFORCING BAR IN CONCRETE CONTAINING CHLORIDE ION

2000 ◽  
Vol 65 (536) ◽  
pp. 9-15 ◽  
Author(s):  
Yuji MATSUBAYASHI ◽  
Yoshiihro MASUDA ◽  
Yuki SASABUCHI
Keyword(s):  
Chloride Ion ◽  
Reinforcing Bar

scholarly journals ACCELERATED TEST ON THE RATE OF CORROSION OF REINFORCING BAR IN CONCRETE CONTAINING CHLORIDE ION

2012 ◽  
Vol 77 (681) ◽  
pp. 1613-1622 ◽  
Author(s):  
Masaru KAKEGAWA ◽  
Yoshihiro MASUDA ◽  
Yuji MATSUBAYASHI ◽  
Tadatsugu KAGE
Keyword(s):  
Chloride Ion ◽  
Accelerated Test ◽  
Reinforcing Bar

Probabilistic Analysis of Corrosion-Induced Resistance Degradation of Reinforced Concrete Bridge Beam under Incomplete Information

2010 ◽  
Vol 163-167 ◽  
pp. 3193-3199
Author(s):  
Lei Wang ◽  
Ya Fei Ma ◽  
Jian Ren Zhang
Keyword(s):  
Reinforced Concrete ◽  
Incomplete Information ◽  
Induced Resistance ◽  
Probabilistic Analysis ◽  
Chloride Ion ◽  
Reinforcing Bar ◽  
Reinforced Concrete Bridge ◽  
Structural Resistance ◽  
Resistance Degradation ◽  
The Relationship

The influencing information of structural resistance cannot be exactly inspected due to limitation of the experimental means, time and space. The study must be conducted by incomplete information and the uncertainty is enhanced. The uncertainty consists of fuzziness, randomness, and faultiness of knowledge. The faultiness of knowledge is the weak uncertainty, and can be incorporated into fuzziness and randomness. A novel probabilistic analysis method of corrosion-induced resistance degradation subject to fuzziness and randomness is developed in this paper. The reinforcing bar corrosion is induced by chloride ion attack in reinforced concrete (RC) bridge. The relationship between steel area corrosion rate and yield strength is presented based on the experimental investigation on mechanical property of corroded reinforcement. The fuzzy time-variant probabilistic analysis of resistance degradation is illustrated by an example problem of RC bridge beam. The result can be used to time-variant reliability-based evaluation for reinforced concrete.

ANALYSIS OF DETERIORATION IN REINFORCED CONCRETE BRIDGE GIRDERS DAMAGED BY CHLORIDE DETERIORATION AND FATIGUE

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
H. Honda ◽  
T. Shimozato ◽  
Y. Arizumi
Keyword(s):  
Visual Inspection ◽  
Steel Corrosion ◽  
Chloride Ion ◽  
Reinforcing Bars ◽  
Loading Test ◽  
Reinforcing Bar ◽  
Reinforced Concrete Bridge ◽  
Internal Loss ◽  
Static Loading Test ◽  
Girder Bridge

The subject of this research was a concrete T-girder bridge which had been exposed for 40 years to the sub-tropical archipelago environment off the east coast of Okinawa, with large amounts of windblown salt, high temperatures and high humidity, a harsh environment for salt damage and steel corrosion. It had suffered damage in the forms of 1) concrete spalling due to reinforcing bar corrosion, 2) internal loss of cross section and severance in internal reinforcing bars, and was therefore removed. Various tests and inspections were applied to analyze the state of deterioration of a real salt-damaged bridge, with the aim of providing technical reference material of use in formulating appropriate maintenance management methods. Distant visual inspection was performed prior to removal of the girder. After the removal, close visual inspection and non-distractive inspections were performed. Compressive strength, elastic modulus and chloride ion content of the concrete were measured. Corrosion of reinforcing bar was observed after chipping the concrete. Chloride-induced deterioration inside the concrete and competence of non-destructive inspection for the deterioration were studied. Static loading test and fatigue-test were performed.

scholarly journals EXPERIMENTAL STUDY ON THE RATE OF CORROSION OF REINFORCING BAR IN CONCRETE CONTAINING CHLORIDE ION

1992 ◽  
Vol 435 (0) ◽  
pp. 19-27 ◽  
Author(s):  
Yoshihiro MASUDA ◽  
Hiroshi HANAE ◽  
Yuji MATSUBAYASHI ◽  
Kenji HARA ◽  
Masayuki YASUDA
Keyword(s):  
Experimental Study ◽  
Chloride Ion ◽  
Reinforcing Bar

The Electrochemical Characterization of Rebar Passivation Film in Simulated Concrete Media

2011 ◽  
Vol 255-260 ◽  
pp. 539-545 ◽  
Author(s):  
Wei Zhong Gan ◽  
Wei Liang Jin ◽  
Jian Ping Shao
Keyword(s):  
Concrete Structure ◽  
Chloride Ion ◽  
Dynamic State ◽  
Reinforcing Bar ◽  
Passivation Film ◽  
Active Transition ◽  
Long Term Performance ◽  
Term Performance

Based on the fundamental theory of electrochemical anodic polarization, simulated concrete is doped with corrosion inhibitor to prevent corrosion by chloride ion in the marine environment. Thus, with reference to the potential-time curves obtained in different concrete environments and construction conditions, the early dynamic state of active transition of rebar passive films in concretes can be quickly characterized. According to the experiments, the characteristics of passive active transition are synchronous with rebar corrosion. This helps to systematically study the influence of different components of concrete and external media on the durability of the concrete structure. The strong alkaline environment of the concrete is useful in controlling corrosion rate of reinforcing bar. As one of the additional protective measures of the durability of the concrete structure, corrosion inhibitor’s long-term performance contains uncertainty.

scholarly journals EXPERIMENTAL RESEARCH OF CORROSION INITIATION CHLORIDE ION CONCENTRATION OF STAINLESS STEEL REINFORCING BAR IN CONCRETE

2009 ◽  
Vol 65 (4) ◽  
pp. 522-529
Author(s):  
Yutaka TADOKORO ◽  
Yui TSUKUDA ◽  
Toru YAMAJI ◽  
Tsuyoshi MARUYA ◽  
Junichiro NIWA
Keyword(s):  
Stainless Steel ◽  
Experimental Research ◽  
Chloride Ion ◽  
Ion Concentration ◽  
Reinforcing Bar ◽  
Corrosion Initiation

NAS 825

Alloy Digest ◽  
2012 ◽  
Vol 61 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Heat Treating ◽  
Corrosion Cracking ◽  
Corrosion Resistant

Abstract NAS 825 is a corrosion-resistant nickel alloy that has resistance to both oxidizing and reducing environments, and with 42% nickel, the alloy is very resistant to chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-694. Producer or source: Nippon Yakin Kogyo Company Ltd.

SANDMEYER ALLOY 825

Alloy Digest ◽  
2011 ◽  
Vol 60 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Nickel Alloy ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Heat Treating ◽  
Steel Company ◽  
Good Corrosion Resistance

Abstract Sandmeyer alloy 825 is a nickel alloy high in chromium and molybdenum with good corrosion resistance and ductility. The alloy has enough nickel (42%) to be relatively free from chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-687. Producer or source: Sandmeyer Steel Company.

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