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Effect of Crack on Durability of RC Material under the Chloride Aggressive Environment

Author

Listed:
  • Yongchun Cheng

    (College of Transportation, Jilin University, Changchun 130025, Jilin, China)

  • Yuwei Zhang

    (College of Transportation, Jilin University, Changchun 130025, Jilin, China)

  • Guojin Tan

    (College of Transportation, Jilin University, Changchun 130025, Jilin, China)

  • Yubo Jiao

    (College of Transportation, Jilin University, Changchun 130025, Jilin, China)

Abstract

Exposed to aggressive environments, the rebar in reinforced concrete (RC) bridges will be corroded gradually. Durability of RC material mostly depends on the rebar corrosion behavior. In this research, influences of crack on rebar corrosion were investigated. Firstly, RC specimens with different crack number, width and spacing were prepared and the rebar corrosion was conducted through an accelerated chloride penetration method. Then, corrosion current densities of rebar were calculated from electrochemical test methods including liner polarization (LP), Tafel potentiodynamic polarization (TPP) and electrochemical impedance spectroscopy (EIS) measurements. Finally, the discussion was presented about a more reasonable electrochemical testing method for rebar corrosion in RC material. Besides, the significant influence factor among crack width, number and spacing was evaluated based on both One-way analysis of variance (One-way ANOVA) and Turkey’s honest significant difference (Turkey’s HSD) test. The results revealed that a more reasonable way to obtain corrosion current densities of rebar is combining EIS measurement with TPP measurement. Crack number shows the most significant effect on corrosion behavior of rebar, while crack spacing possesses the least one.

Suggested Citation

  • Yongchun Cheng & Yuwei Zhang & Guojin Tan & Yubo Jiao, 2018. "Effect of Crack on Durability of RC Material under the Chloride Aggressive Environment," Sustainability, MDPI, vol. 10(2), pages 1-16, February.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:2:p:430-:d:130636
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    References listed on IDEAS

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    1. Keun-Hyeok Yang & Jitendra Kumar Singh & Bang-Yeon Lee & Seung-Jun Kwon, 2017. "Simple Technique for Tracking Chloride Penetration in Concrete Based on the Crack Shape and Width under Steady-State Conditions," Sustainability, MDPI, vol. 9(2), pages 1-14, February.
    2. Seung-Jun Kwon, 2017. "Current Trends of Durability Design and Government Support in South Korea: Chloride Attack," Sustainability, MDPI, vol. 9(3), pages 1-18, March.
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    Cited by:

    1. Ignacio J. Navarro & Víctor Yepes & José V. Martí, 2018. "Life Cycle Cost Assessment of Preventive Strategies Applied to Prestressed Concrete Bridges Exposed to Chlorides," Sustainability, MDPI, vol. 10(3), pages 1-16, March.
    2. Daming Luo & Yan Wang & Shaohui Zhang & Ditao Niu, 2020. "Application of Fuzzy and Rough Sets to Environmental Zonation for Concrete Durability: A Case Study of Shaanxi Province, China," Sustainability, MDPI, vol. 12(8), pages 1-20, April.

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