Effects of galvanostatic and artificial chloride environment methods on the steel corrosion spatial variability and probabilistic flexural capacity of RC beams

被引：16

作者：

Xin, Jiyu ^{[1
]}

Akiyama, Mitsuyoshi ^{[1
]}

Miyazato, Shinichi ^{[2
]}

Frangopol, Dan M. ^{[3
]}

Lim, Sopokhem ^{[1
]}

Xu, Zhejun ^{[1
]}

Li, Ao ^{[1
]}

机构：

[1] Waseda Univ, Dept Civil & Environm Engn, Tokyo, Japan

[2] Kanazawa Inst Technol, Dept Civil & Environm Engn, Nonoichi, Ishikawa, Japan

[3] Lehigh Univ, ATLSS Ctr, Dept Civil & Environm Engn, Bethlehem, PA 18015 USA

来源：

STRUCTURE AND INFRASTRUCTURE ENGINEERING | 2022年 / 18卷 / 10-11期

关键词：

Galvanostatic; artificial chloride environment; reinforced concrete beams; steel corrosion; spatial variability; X-ray technology; Gumbel distribution; INDUCED COVER CRACKING; PITTING CORROSION; REINFORCEMENT CORROSION; STRUCTURAL RELIABILITY; MECHANICAL-BEHAVIOR; CONCRETE BEAMS; X-RAY; PERFORMANCE; MEMBERS; BARS;

D O I：

10.1080/15732479.2022.2061016

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The galvanostatic method has been widely used for accelerating the corrosion of reinforcing bars in concrete to complete test studies within a reasonable timeframe. However, which level of current density induces characteristics of steel corrosion spatial variability and the associated structural performance of corroded reinforced concrete (RC) beams that are similar to those observed under natural conditions remains unknown. In this paper, comprehensive experimental research is conducted to compare the characteristics of spatial growth in steel weight loss and crack width and the structural behavior of corroded RC beams by two corrosion-accelerated methods (i.e. galvanostatic method at six current densities and artificial chloride environment method). The effects of these corrosion acceleration methods on Gumbel's location and scale distribution parameters and the associated yield load capacity of corroded RC beams are investigated using Monte Carlo-based two-dimensional finite element analysis. Finally, a suitable current density is recommended to better simulate the steel corrosion distribution and the associated yield load capacity of RC beams in comparison to those observed under an artificial chloride environment.

引用

页码：1506 / 1525

页数：20

共 50 条

[1] Toward life-cycle reliability-, risk- and resilience-based design and assessment of bridges and bridge networks under independent and interacting hazards: emphasis on earthquake, tsunami and corrosion [J].

Akiyama, Mitsuyoshi ;

Frangopol, Dan M. ;

Ishibashi, Hiroki .

STRUCTURE AND INFRASTRUCTURE ENGINEERING, 2020, 16 (01) :26-50

[2] Life-cycle reliability of RC bridge piers under seismic and airborne chloride hazards [J].

Akiyama, Mitsuyoshi ;

Frangopol, Dan M. ;

Matsuzaki, Hiroshi .

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 2011, 40 (15) :1671-1687

[3] Integration of the effects of airborne chlorides into reliability-based durability design of reinforced concrete structures in a marine environment [J].

Akiyama, Mitsuyoshi ;

Frangopol, Dan M. ;

Suzuki, Motoyuki .

STRUCTURE AND INFRASTRUCTURE ENGINEERING, 2012, 8 (02) :125-134

[4] Time-dependent reliability analysis of existing RC structures in a marine environment using hazard associated with airborne chlorides [J].

Akiyama, Mitsuyoshi ;

Frangopol, Dan M. ;

Yoshida, Ikumasa .

ENGINEERING STRUCTURES, 2010, 32 (11) :3768-3779

[5] Framework for probabilistic tsunami hazard assessment considering the effects of sea-level rise due to climate change [J].

Alhamid, Abdul Kadir ;

Akiyama, Mitsuyoshi ;

Ishibashi, Hiroki ;

Aoki, Koki ;

Koshimura, Shunichi ;

Frangopol, Dan M. .

STRUCTURAL SAFETY, 2022, 94

[6] COVER CRACKING AS A FUNCTION OF BAR CORROSION .1. EXPERIMENTAL TEST [J].

ANDRADE, C ;

ALONSO, C ;

MOLINA, FJ .

MATERIALS AND STRUCTURES, 1993, 26 (162) :453-464

[7] Corrosion rate evolution in concrete structures exposed to the atmosphere [J].

Andrade, C ;

Alonso, C ;

Sarría, J .

CEMENT & CONCRETE COMPOSITES, 2002, 24 (01) :55-64

[8]

Biondini F., 2019, Life-cycle design, assessment and maintenance of structures and infrastructure systems, DOI [https://doi.org/10.1061/9780784415467.fm, DOI 10.1061/9780784415467.FM]

[9]

CEB-FIP, 2012, MODEL CODE 2010 FINA, V1, P350

[10] Structural assessment of corroded reinforced concrete beams: Modeling guidelines [J].

Coronelli, D ;

Gambarova, P .

JOURNAL OF STRUCTURAL ENGINEERING, 2004, 130 (08) :1214-1224

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