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Comparative characterisation of Brazilian and Land craft industrial steel rebars: microstructural, wear, and electrochemical corrosion behaviour
Abstract
This study presents a comparative characterisation of 16 mm Brazilian imported and locally produced Land craft industrial (LCI) reinforcement steel rebars through chemical analysis, ImageJ microstructural evaluation, sliding wear testing, and electrochemical corrosion assessment in 1 M H2SO4. Chemical analysis showed that Brazilian steel exhibited lower levels of detrimental impurities – sulphur (0.014 %), phosphorus (0.0097 %), and copper (0.013 %) – relative to LCI steel (0.056 %, 0.106 %, and 0.253 %, respectively), indicating superior compositional purity. Microstructural analysis revealed a significantly finer grain structure in Brazilian steel (average grain size: 201.94 µm2; Feret diameter: 11.61 µm) compared to coarser-grained LCI steel (1776.30 µm2; 20.71 µm). Sliding wear tests demonstrated that LCI steel lost less mass (0.029 g) than Brazilian steel (0.038 g) under identical sliding conditions, indicating better wear resistance attributed to its coarser, carbide-rich microstructure. Electrochemical evaluation, supported by open-circuit potential measurements, potentiodynamic polarisation curves, and scanning electron microscopy/energy dispersive spectrum (SEM/EDS) post-exposure compositional analysis, revealed distinct corrosion susceptibilities between the two steels in acidic medium: LCI steel showed a higher polarisation resistance (Rp = 23.8 Ohm vs. 6.0 Ohm), a lower corrosion current density (icorr ≈ 128 vs. ≈ 1267 µA/cm2), and a lower corrosion rate (CR ≈ 1.49 vs. ≈ 14.7 mm/y) than Brazilian steel, with compositional and microstructural differences playing a significant role. These results provide a quantitative basis for assessing the corrosion and wear behaviour of both imported and domestically manufactured reinforcement steels under the tested conditions.
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Zhao P, Xu G, Wang Q, Zeng Z, Corrosion behavior of steel bars in simulated concrete pore solution under the coupling action of chloride salt and DC stray current, Constr. Build. Mater., 455 (2024) 139126. https://doi.org/10.1016/j.conbuildmat.2024.139126
Al-Naghi AAA, Ghazouani N, Selmi A, Raza A, Ahmed M, Mechanical and microstructural characterization of recycled aggregate geopolymer concrete having high strength and recycled tire steel wire fibers, Mater. Lett., 381 (2025) 137787. https://doi.org/10.1016/j.matlet.2024.137787
Alabi AGF, Onyeji LI, Analysis and comparative assessment of locally produced reinforcing steel bars for structural purposes, Journal of Research Information in Civil Engineering, 7(2) (2010) 49–60.
Joshua O, Olusola KO, Ayegba C, Adekunle YI. Assessment of the quality steel reinforcement bars available in Nigerian market. In: AEI 2013: Building Solutions for Architectural Engineering (C.J. Anumba, A.M. Memari, eds.), ASCE, Reston, VA, (2013) 296–305. https://doi.org/10.1061/9780784412909.029
Zomorodian A, Behnood A, Review of corrosion inhibitors in reinforced concrete: Conventional and green materials, Buildings, 13(5) (2023) 1170. https://doi.org/10.3390/buildings13051170
Popoola A, Olorunniwo O, Ige O. Corrosion resistance through the application of anti-corrosion coatings. In: Developments in Corrosion Protection. InTech; 2014. https://doi.org/10.5772/57420
Baddoo NR, Stainless steel in construction: A review of research, applications, challenges and opportunities, J. Constr. Steel Res., 64(11) (2008) 1199–1206. https://doi.org/10.1016/j.jcsr.2008.07.011
Meyers MA, Chawla KK. Mechanical Behavior of Materials. 2nd ed. Cambridge University Press: Cambridge; 2009. 856 pp. https://doi.org/10.1504/IJMMP.2009.032786
Trejo D, Pillai R, Accelerated chloride threshold testing: Part I – ASTM A 615 and A 706 reinforcement, ACI Mater. J., 100 (2003) 519–527.
Lu H, Tian Y, Wu D, Effect of chromium content on the passive film and corrosion behavior of steel reinforcement in a simulated concrete pore solution, Materials, 19(10) (2026) 1939. https://doi.org/10.3390/ma19101939
Liu W, Wang Q, Zou G, Klu EE, et al., Revealing the enhanced passivation and anti-corrosion performance of surface-nanocrystallization-modified Cr-alloyed rebar via electrochemical testing and XPS depth analysis, Coatings, 13(1) (2023) 192. https://doi.org/10.3390/coatings13010192
Abramoff MD, Magelhaes PJ, Ram SJ, Image processing with ImageJ, Biophotonics Int., 11(7) (2004) 36–42.
Schneider CA, Rasband WS, Eliceiri KW, NIH Image to ImageJ: 25 years of image analysis, Nat. Methods, 9(7) (2012) 671–675. https://doi.org/10.1038/nmeth.2089
Zhu X, Zhu Y, Kang C, Liu M, et al., Research on automatic identification and rating of ferrite–pearlite grain boundaries based on deep learning, Materials, 16(5) (2023) 1974. https://doi.org/10.3390/ma16051974
Clover D, Kinsella B, Pejcic B, De Marco R, The influence of microstructure on the corrosion rate of various carbon steels, J. Appl. Electrochem., 35 (2005) 139–149. https://doi.org/10.1007/s10800-004-6207-7
Zum Gahr KH. Microstructure and Wear of Materials. Elsevier: Amsterdam; 1987. 559 p.
Bayer RG. Mechanical Wear Fundamentals and Testing. 2nd ed. Marcel Dekker: New York; 2004. 399 p.
Holmberg K, Matthews A. Coatings Tribology: Properties, Mechanisms, Techniques and Applications in Surface Engineering. 2nd ed. Elsevier: Amsterdam; 2009. 576 p.
ASTM International. ASTM G99-17: Standard test method for wear testing with a pin-on-disk apparatus; 2017. https://doi.org/10.1520/G0099-17
Archard JF, Contact and rubbing of flat surfaces, J. Appl. Phys., 24(8) (1953) 981–988. https://doi.org/10.1063/1.1721448
Angst U, Elsener B, Larsen CK, Vennesland O, Critical chloride content in reinforced concrete – A review, Cem. Concr. Res., 39 (2009) 1122–1138. https://doi.org/10.1016/j.cemconres.2009.08.006
Hansson CM, The impact of corrosion on society, Metall. Mater. Trans. A, 42 (2011) 2952–2962. https://doi.org/10.1007/s11661-011-0703-2
Rivera-Corral JO, Fajardo G, Arliguie G, Orozco-Cruz R, et al., Corrosion behavior of steel reinforcement bars embedded in concrete exposed to chlorides: Effect of surface finish, Constr. Build. Mater., 147 (2017) 815–826. https://doi.org/10.1016/j.conbuildmat.2017.04.186
McCafferty E. Introduction to Corrosion Science. Springer Science & Business Media: Berlin and Heidelberg; 2010. 302 p. https://doi.org/10.1007/978-1-4419-0455-3
Galus Z. Fundamentals of Electrochemical Analysis. Ellis Horwood: Chichester; 1994. 606 p.
Oisakede MO, Premlall K, Popoola AP, Investigation into the mechanical properties and microstructure of a local and an imported reinforcement bar, ABUAD J. Eng. Res. Dev. (AJERD), 8(2) (2025) 310–318. https://doi.org/10.53982/ajerd
South African Bureau of Standards. SANS 920:2011 – Steel bars for concrete reinforcement. SABS: Pretoria; 2011.
ASTM International. ASTM A615/A615M-24 – Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement; 2024. https://doi.org/10.1520/A0615_A0615M-24
Kioko JM, Causes of building failures in Africa: A case study on collapsing structures in Kenya, IOSR J. Mech. Civ. Eng., 11(3) (2014) 9–10. https://doi.org/10.9790/1684-11370910
Tchamba JC, Bikoko TGLJ, Failure and collapse of building structures in the cities of Yaoundé and Douala, Cameroon from 2010 to 2014, Modern Applied Science, 10(1) (2016) 23–33. https://doi.org/10.5539/mas.v10n1p23
Mbereyaho L, Gershome AG, Mutabaruka JdD, Ndayisenga JC, Niyomwungeri E, et al., Investigation on application of Rwanda building standards in local construction industry, Rwanda J. Eng. Sci. Technol. Environ., 2(1) (2019). https://doi.org/10.4314/rjeste.v2i1.3
Talk.Build. The crisis of building collapses in Africa [Internet]; 2025. Available from: https://talk.build/blogs/the-crisis-of-building-collapses-in-africa, Accessed on 18 June 2026.
Damcı E, Temür R, Kanbir Z, Şekerci Ç, Köroğlu EÖ, Comprehensive investigation of damage due to 2023 Kahramanmaraş earthquakes in Türkiye: Causes, consequences, and mitigation, J. Build. Eng., 99 (2025) 111420. https://doi.org/10.1016/j.jobe.2024.111420
Avğın S, Köse MM, Özbek A, Damage assessment of structural and geotechnical damages in Kahramanmaraş during the February 6, 2023 earthquakes, Eng. Sci. Technol., Int. J., 57 (2024) 101811. https://doi.org/10.1016/j.jestch.2024.101811
Zhao B, Taucer F, Rossetto T, Field investigation on the performance of building structures during the 12 May 2008 Wenchuan earthquake in China, Eng. Struct., 31(8) (2009) 1707–1723. https://doi.org/10.1016/j.engstruct.2009.02.039
Islam MS, Islam MM, Imran HRT, Skitmore M, Nepal MP, Grasping the nonconformities in building construction supply chains, J. Perform. Constr. Facil., 35(1) (2021) 04020141. https://doi.org/10.1061/(ASCE)CF.1943-5509.0001546
Saastamoinen A. Processing and microstructure of direct-quenched and tempered ultra-high strength steels [dissertation]. Oulu (Finland): University of Oulu; 2020. 120 p.
Li B, Langa Y, Chena H, Mi ZS, Copper content effects on passive film of modified 00Cr20Ni18Mo6CuN super austenitic stainless steels in acidic environment, Heliyon, 9 (2023) e13652. https://doi.org/10.1016/j.heliyon.2023.e13652
Carpenter Technology Corporation. Selecting alloys for severely corrosive environments [Internet]; 2023. Available from: https://www.carpentertechnology.com/blog/selecting-alloys-for-severely-corrosive-environments, Accessed on 18 June 2026.
Ananth S, Sivaprakasam P, Udaya Prakash J, Kalusuraman G, Tribological characteristics of GCI-EN31 steel surface contact with dry sliding condition, J. Nanomater., 2022 (2022) 6478781. https://doi.org/10.1155/2022/6478781
Dixit T, Prasad KE, Effect of temperature and sliding velocity on the dry sliding wear mechanisms of boron modified Ti-6Al-4V alloys, Lubricants, 10(11) (2022) 296. https://doi.org/10.3390/lubricants10110296
Krawczyk J, Frocisz Ł, Matusiewicz P, Kopysciński M, Lech S, Analysis of the wear parameters and microstructure of high-carbon steel in order to identify its tribological properties, Appl. Sci., 14(18) (2024) 8318. https://doi.org/10.3390/app14188318
Adekunle AA, Odusote JK, Evaluation of the mechanical properties of reinforcing steel bars from collapsed building sites, J. Fail. Anal. Prev., 13 (2013) 737–743. https://doi.org/10.1007/s11668-013-9739-5
MetalZenith. Carbon (C): Key element in steel strength, hardness and microstructure [Internet]; 2025. Available from: https://metalzenith.com/blogs/chemical-elements-compounds-terms/carbon-c-key-element-in-steel-strength-hardness-microstructure, Accessed on 18 June 2026.
Poursaee A. Corrosion of steel in concrete structures. In: Corrosion of Steel in Concrete Structures. 2nd ed. Woodhead Publishing: Sawston; 2023. p. 1–32. https://doi.org/10.1016/C2019-0-03605-9
Gupta SK, Manna R, Chattopadhyay K, Effect of austempering time on electrochemical and immersion corrosion behaviour of high carbon, carbide-free nanostructured bainitic steel in an aqueous 3.5 % NaCl, Met. Mater. Int., 29 (2023) 2533–2555. https://doi.org/10.1007/s12540-023-01413-x
Zhai K, Zhang Y, Yue J, Qiu Y, et al., Fracture surface microstructure and new fracture mechanism in the pearlite structure, J. Mater. Res. Technol., 31 (2024) 1885–1895. https://doi.org/10.1016/j.jmrt.2024.06.211
Potgieter JH, Whitefield D, Motsumi V, Electrochemical corrosion behaviour of different grades of WC-Co, high-Cr white cast irons and Hadfield steel in 1 M sulphuric acid, Materials, 14(20) (2021) 6130. https://doi.org/10.3390/ma14206130
DOI: https://doi.org/10.15826/elmattech.2026.5.075
Copyright (c) 2026 Maureen Olere Oisakede, Kasturie Premlall, Abimbola Patricia Popoola
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