Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions
Source abstract
Abstract
This study performed accelerated corrosion tests on reinforced concrete (RC) specimens reinforced with transverse steel bars to evaluate the concrete cracking and rebar strain behaviors caused by rebar corrosion. Seven RC specimens were created with variable compressive strengths, rebar diameters, and concrete cover thicknesses. To mimic in-situ conditions, the accelerated corrosion tests applied a current to the longitudinal bar and transverse bar for different periods of time to create an unbalanced chloride ion distribution. These tests evaluated the amount of rebar corrosion, corrosion cracking properties, and transverse bar strain behavior. The corrosion rate of the transverse bar was faster than that of the longitudinal bar, and cracking first occurred in the concreate around the transverse bar in the specimens with low concrete compressive strength and thin concrete cover. Corrosion cracking and rebar strain were greatly affected by the behavior of the corrosion products that resulted from the pore volume and cracking properties of the cement paste.
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Research context
OpenAlex topics: Concrete Corrosion and Durability · Smart Materials for Construction · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Architectural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, Yokohama 226-8503, Japan
Daewoo Institute of Construction Technology, Daewoo E&C, 20, Suil-ro 123boen-gil, Suwon-si 16297, Korea
Funding
National Research Foundation of Korea
References (22)
Show source-provided references
1. Physical model for steel corrosion in concrete sea structures—Application10.1061/JSDEAG.0005169 ↗
2. Service life projection for chloride-exposed concrete reinforced with black and corrosion-resistant bars10.5006/0489 ↗
3. Composition and expansion coefficient of rust based on X-ray diffraction and thermal analysis10.1016/j.corsci.2011.01.007 ↗
4. Corrosion-induced concrete cracking model considering corrosion product-filled paste at the concrete/steel interface10.1016/j.conbuildmat.2016.04.097 ↗
5. Effect of Confinement and Concrete Strength upon Crack Behaviors Induced by Corrosion-Product Expansion for Reinforced Concrete Members10.3130/aijs.79.305 ↗
6. Shinohara, Y. (2011, January 12–15). Effect of Confinement upon Crack Behaviors caused by Corrosion-Product Expansion around Corroding Bars. Proceedings of the 12nd International Conference on Durability of Building Materials and Components, Porto, Portugal.
7. Correlation between accelerated corrosion tests and atmospheric corrosion tests on steel10.1007/s10800-005-1322-7 ↗
8. Cover cracking as a function of bar corrosion: Part I-Experimental test10.1007/BF02472805 ↗
9. Corrosion-induced cracking: Experimental data and predictive models
10. Simulation of Coupled Corrosive Product Formation, Migration into Crack and Propagation in Reinforced Concrete Sections10.3151/jact.3.253 ↗
11. Experimental and Numerical Investigation of Corrosion-Induced Cover Cracking in Reinforced Concrete Structures10.1061/(ASCE)0733-9445(2009)135:4(376) ↗
12. Corrosion inhibitors for chlorides induced corrosion in reinforced concrete structures10.1016/j.cemconres.2005.11.007 ↗
13. (2020, February 03). Standard specification for concrete structure (maintenance). Available online: http://www.jsce-int.org/system/files/JGC17_Standard_Specifications_Maintenance_1.1.pdf.
14. Comparison of uniform and non-uniform corrosion induced damage in reinforced concrete based on a Gaussian description of the corrosion layer10.1016/j.corsci.2011.05.017 ↗
15. Effects of non-uniform corrosion on the cracking and service life of reinforced concrete structures10.1016/j.cemconres.2010.03.018 ↗
16. Finite element analysis of the effects of radial expansion of corroded reinforcement10.1016/j.compstruc.2006.02.012 ↗
17. Cracking of the concrete cover due to reinforcement corrosion: A two-dimensional lattice model study10.1016/j.conbuildmat.2013.03.063 ↗
18. Modeling the cracking of cover concrete due to non-uniform corrosion of reinforcement10.1016/j.corsci.2014.08.025 ↗
19. Quality of steel–concrete interface and corrosion of reinforcing steel10.1016/S0008-8846(03)00087-5 ↗
20. Analytical modelling of concrete cover cracking caused by corrosion of reinforcement10.1617/s11527-009-9510-2 ↗
21. Damage analysis and cracking model of reinforced concrete structures with rebar corrosion10.1016/j.corsci.2011.06.018 ↗
22. Cracking, Cover, and Corrostion of Reinforcement