Publications by authors named "Chaoqun Zeng"

Article Synopsis
  • The study investigates how anodic acidification leads to the debonding of the primary anode in impressed current cathodic protection (ICCP) systems used in reinforced concrete.
  • Researchers utilized 3D micro X-ray computed tomography (μ-XCT) to observe the changes in the anodic acidification zone over a 40-day testing period.
  • The findings demonstrated that 3D reconstruction can provide detailed insights into the affected areas, showing that these changes relate to the applied electrical energy and can help estimate the durability of ICCP systems.
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Combining the theoretical derivation and numerical calculations, the characteristic changes of the tensile constitutive relation of corroded steel bars and their underlying mechanisms are studied. Corroded steel bars are regarded as a combination of three parts, which include uncorroded part, corroded part with variable cross section, and uniform corroded part. It is assumed that in all three parts the steel material follows a simplified trilinear constitutive relation of a mild steel material (elasticity, yielding, and hardening), from which an analytical model describing the overall tensile constitutive relation of the corroded steel bar is developed.

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To elucidate the mechanism of soybean resistance to Al, physiological and biochemical indices and antioxidant enzyme expression and activities were systematically analyzed in Al-sensitive (Glycine max Merr., Yunnan Province of China, SB) and Al-resistant Dambo (Glycine max Merr., Kyoto of Japan, RB) black soybean plants.

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