Indoor accelerated corrosion test and marine field test of corrosion-resistant low-alloy steel rebars
Source abstract
Abstract
Macrocell corrosion test and accelerated alternating wet–dry experiment combined with marine field test were employed to study the corrosion behavior of HRB400 carbon steel, 1.5Cr steel, and 5Cr steel in a simulated concrete pore solution and mortar. The macrocell current significantly decreases in samples added with Cr compared with that in HRB400 steel. The corrosion rate is decreased by Cr but increased by Cl−; as a consequence, the corrosion rates of 1.5Cr and 5Cr steel are lower than that of HRB400 steel. However, the corrosion products differ slightly in terms of the contents of α-FeOOH (goethite), γ-FeOOH (lepidocrocite), γ-Fe2O3, and Fe3O4 (maghemite or magnetite). The addition of Cr increases the content of the protective α-FeOOH and reduces the content of γ-FeOOH. Both ordinary and high-performance epoxy coatings remain intact after 1 year of marine field test. Among the bare steel rebars, HRB400 steel shows extensive localized corrosion on the surface, whereas 1.5Cr steel exhibits less severe corrosion. The scarcely visible corroded areas in 5Cr steel indicate that this rebar is in the passive state, consistent with results of the indoor accelerated test. Hence, the durability of concrete structures can be prolonged with the utilization of corrosion-resistant low-alloy rebars.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete Corrosion and Durability · Corrosion Behavior and Inhibition · Infrastructure Maintenance and Monitoring
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Effect of corrosion method of the reinforcing bar on bond characteristics in reinforced concrete specimens10.1016/j.conbuildmat.2013.12.065 ↗
2. Acoustic emission vis-à-vis electrochemical techniques for corrosion monitoring of reinforced concrete element10.1016/j.conbuildmat.2014.06.068 ↗
3. Comparative studies of experimental and numerical techniques in measurement of corrosion rate and time-to-corrosion-initiation of rebar in concrete in marine environments10.1016/j.cemconcomp.2013.11.001 ↗
4. Recent research on steel corrosion in concrete
5. Corrosion behaviour of a new low-nickel stainless steel embedded in activated fly ash mortars10.1016/j.cemconcomp.2011.03.014 ↗
6. The electrochemical behaviour of stainless steel AISI 304 in alkaline solutions with different pH in the presence of chlorides10.1016/j.electacta.2011.02.094 ↗
7. De Rojas · 2001
8. Evaluation of mechanical and corrosion properties of MMFX reinforcing steel for concrete
9. The nature of rusts and corrosion characteristics of low alloy and plain carbon steels in three kinds of concrete pore solution with salinity and different pH10.1016/j.corsci.2011.11.012 ↗
10. Study on high strength and resisting corrosion steel bar containing Re
11. Passive behaviour of Cr8Ni2 alloy corrosion-resistant steel in simulating concrete pore solutions with different pH values
12. Multiple corrosion protection systems for reinforced concrete bridge components: laboratory and field tests
13. Rebar corrosion in chloride environment10.1016/j.conbuildmat.2010.11.099 ↗
14. Polarization resistance measurements of bars embedded in concrete with different chloride concentrations: EIS and DC comparison10.1002/maco.200905596 ↗
15. Characterization of chloride thresholds in Florida coastal concrete bridge substructures
16. Mitigation of chloride and sulfate based corrosion in reinforced concrete via electrokinetic nanoparticle treatment
17. Corrosion behavior of Cr modified HRB400 steel rebar in simulated concrete pore solution10.1016/j.conbuildmat.2015.05.073 ↗
18. Longterm corrosion performance of rebar embedded in blended cement concrete under macro cell corrosion condition10.1016/j.conbuildmat.2006.09.004 ↗
19. Process control of reinforcement corrosion in concrete. Part 2: time-dependent dominating factors under different environmental conditions10.1016/j.conbuildmat.2014.09.103 ↗
20. The corrosion investigation of rebar embedded in the fibers reinforced concrete10.1016/j.conbuildmat.2012.04.051 ↗
21. Effect of phosphate based inhibitor on the threshold chloride to initiate steel corrosion in saturated hydroxide solution10.1016/j.conbuildmat.2013.08.054 ↗
22. Epoxy-coated steel for the reinforcement of concrete (GB/T25826-2010).
23. About the professional standard epoxy resin coated steel bars (JG3042-1997)
24. Popularization and application of SEBF/SLF high performance epoxy coating for heavy duty anti-corrosion technology
25. Analysis of half-cell potential measurement for corrosion of reinforced concrete10.1016/j.conbuildmat.2003.10.004 ↗
26. Corrosion behavior of nickel containing weathering steel in simulated marine atmospheric environment10.1002/maco.201307447 ↗
27. Composition and expansion coefficient of rust based on X-ray diffraction and thermal analysis10.1016/j.corsci.2011.01.007 ↗
28. Investigation of severe corrosion observed at intersection points of steel rebar mesh in reinforced concrete construction10.1016/j.conbuildmat.2012.07.011 ↗
29. Process control of reinforcement corrosion in concrete. Part 2: time-dependent dominating factors under different environmental conditions10.1016/j.conbuildmat.2014.09.103 ↗
30. Thomas · 2014
31. Sensitivity analysis of corrosion rate prediction models utilized for reinforced concrete affected by chloride10.1007/s11665-012-0447-1 ↗
32. Study on the corrosion resistant property of stainless steel bars under marine environment