Effect of cleaned corrosion surface topography on mechanical properties of cold-formed thin-walled steel

Xu, Shanhua; Zhang, Zongxing; Li, Rou; Wang, Hao

doi:10.1016/j.conbuildmat.2019.06.130

Cited by 57 publications

(13 citation statements)

References 35 publications

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“…The rate of zinc loss or steel corrosion should be determined for further strength reduction analysis. Corrosion studies have been conducted for cold-formed steel [9][10] and corroded structural members [11][12]. As compared to hot-rolled steel, cold-rolled steel has higher corrosion rate when exposed to an aggressive solution of 16.9 vol% H=SO4 + 0.35 vol% HCl at 60°C and pH 0.3 [13].…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Galvanised and Ungalvanised Cold-Formed Steel in Chloride and Sulphate Solutions

Ling

Lee²,

Mohammad³

et al. 2023

AEJ

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The light steel framing is widely use around the world to replace the conventional construction method. However, there are some factors that affect the corrosion rate of the steel framing structures. The factors are oxygen, humidity, sulphate, chloride and copper sulphate which highly contain in seawater regions or specifically coastal area. Hence, all these factors that influence the corrosion rate of the steel framing shall be study to determine the service life and the maintenance required throughout their service life. This paper studies the effect of the chloride, sulphate and the rainwater to the light steel framing structure and the corrosion resistance that provided by the zinc coating on the surface of the steel. The galvanized steel and ungalvanized steel are immersed in different concentration of sodium chloride and copper sulphate solutions for 28 days. The corrosion rate is obtained by measured the weight loss of the steel coupons in the interval 7-days of the immersion time. Other than that, the corrosion rate in seawater is analysed by the result of 0.5 Mol of NaCl and 0.016 Mol of CuSO4. The corrosion rate for the NaCl and CuSO4 is much higher than the corrosion rate in the rainwater. The corrosion resistance that provided by the zinc coating is extremely higher compared to the steel that without the protection. Prediction equation of metal loss from experimental study is proposed for a reliable light steel structure in a function of time.

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Section: Introductionmentioning

confidence: 99%

Corrosion of Galvanised and Ungalvanised Cold-Formed Steel in Chloride and Sulphate Solutions

Ling

Lee²,

Mohammad³

et al. 2023

AEJ

View full text Add to dashboard Cite

show abstract

“…Corrosion changes the surface appearance of the steel and deteriorates its mechanical properties, which affects the safety and durability of the steel structure. The mechanical behaviour of corroded structural steel has been studied by many scholars through different accelerated corrosion methods such as salt spray tests, cyclic immersion corrosion, and electrolytic corrosion [1][2][3][4][5][6]. Xu [7] investigated the mechanical behaviour of rusted steel plates using the neutral salt spray method, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behaviour of Corroded Structural Steel Subjected to Monotonic Tension

2022

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This study aims to investigate the mechanical properties of corroded structural steel under monotonic tensile loading. First, structural steel coupons with various corrosion degrees were produced by electrolytic accelerated corrosion using a particular etchant solution proposed by the authors. Second, the corroded morphologies of the specimens were observed through a morphology scanner; then, the mechanical properties were examined by monotonic tensile loading tests. An analytical model on the relationship between mass loss and surface morphology with the mechanical properties of corroded structural steel was established. Finally, a numerical simulation method was proposed on the mechanical behaviour of corroded structural steel based on random rough surface theory. The finite element was consistent with experimental tests, which indicates the feasibility and accuracy of the proposed simulation method.

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“…However, the performance of the CFS connections is essential when they are exposed to corrosive conditions, such as humid and acidic (or chloride-rich) environments. When exposed to these conditions, corrosion damage to CFS structures can result in considerable reductions in mechanical characteristics [26][27][28][29][30][31][32], affecting the safety and durability of such buildings.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Structural Behavior of Corroded Self-Drilling Screw Connections in Cold-Formed Steel Structures

2022

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"Cold-formed steel (CFS) self-drilling screw connections are popular in the construction industry due to rapid fastening and ease of installation. However, the corrosion damage of CFS structures can significantly reduce mechanical properties, affecting the safety and durability of such structures. Therefore, this research investigates the effect of corrosion on the behavior of CFS connections experimentally. This paper presents a total of 36 new experiments on different types of CFS self-drilling screws (12 and 14 gauge) and steel sheet thickness (2.5 mm). Half of the tests were for corroded specimens, and the remaining half were for non-corroded specimens. Further, one to two screws per arrangement connecting the steel sheets with a yield strength of 450MPa were tested. Screws were immersed for 31 days, and the CFS plates were immersed for 8 weeks in a corrosion chamber before the tests were conducted. The experimental tests found that the shear strength of single-screw and double-screw specimens was reduced by 43%, on average for all investigated screw series."

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Effect of cleaned corrosion surface topography on mechanical properties of cold-formed thin-walled steel

Cited by 57 publications

References 35 publications

Corrosion of Galvanised and Ungalvanised Cold-Formed Steel in Chloride and Sulphate Solutions

Corrosion of Galvanised and Ungalvanised Cold-Formed Steel in Chloride and Sulphate Solutions

Mechanical Behaviour of Corroded Structural Steel Subjected to Monotonic Tension

Experimental Investigation on the Structural Behavior of Corroded Self-Drilling Screw Connections in Cold-Formed Steel Structures

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