DEGRADATION LAWS OF MECHANICAL PROPERTIES FOR PROFILED STEEL SHEETS IN ACCELERATED CORROSION ENVIRONMENTS

XU Jimin; XING Kuntao; GAO Xiangyu; GUO Xiaohua; WANG Ling

doi:10.13204/j.gyjzG201908130001

Volume 51 Issue 1

Apr. 2021

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XU Jimin, XING Kuntao, GAO Xiangyu, GUO Xiaohua, WANG Ling. DEGRADATION LAWS OF MECHANICAL PROPERTIES FOR PROFILED STEEL SHEETS IN ACCELERATED CORROSION ENVIRONMENTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 163-168. doi: 10.13204/j.gyjzG201908130001

Citation:

XU Jimin, XING Kuntao, GAO Xiangyu, GUO Xiaohua, WANG Ling. DEGRADATION LAWS OF MECHANICAL PROPERTIES FOR PROFILED STEEL SHEETS IN ACCELERATED CORROSION ENVIRONMENTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 163-168. doi: 10.13204/j.gyjzG201908130001

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DEGRADATION LAWS OF MECHANICAL PROPERTIES FOR PROFILED STEEL SHEETS IN ACCELERATED CORROSION ENVIRONMENTS

doi: 10.13204/j.gyjzG201908130001

1. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
2. Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China

Received Date: 2020-10-20
Available Online: 2021-04-30

Abstract

Abstract

The profiled steel sheet specimens with different thickness and corrosion degrees were obtained by accelerated corrosion tests. Based on the three-dimensional surface forms and tensile test results, the variation law of surface roughness parameters with corrosion time, failure modes of specimens with different corrosion degrees, difference of stress-strain curves, functional relations between tensile property parameters and corrosion rates were analyzed. A constitutive model of performance degradation for profiled steel sheets was proposed. The results showed that the surface roughness parameters of specimens changed in grades with the increase of corrosion time. With the increase of corrosion rates, the fracture mode of specimens changed from smooth oblique fracture to serrated or echelon form fracture, while the yield platforms and striction sections were gradually shortened, and the tensile mechanical indexes were gradually degraded. The degraded constitutive model could well characterize the degraded law of steel properties with different corrosion degrees.
- corrosion,
- profiled steel sheet,
- mechanical property,
- constitutive model

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References(12)

References

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