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author:

Huang, Wei (Huang, Wei.) [1] | He, Lian (He, Lian.) [2] | Chen, Rong (Chen, Rong.) [3] | Deng, Xuhui (Deng, Xuhui.) [4] | Wei, Jiangang (Wei, Jiangang.) [5] | Hassi, Sara (Hassi, Sara.) [6] | Zhou, Shikang (Zhou, Shikang.) [7] | Zhang, Hengchun (Zhang, Hengchun.) [8] | Zhong, Zhengpeng (Zhong, Zhengpeng.) [9]

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EI

Abstract:

The long-term corrosion behavior of steel bar embedded in sea-sand ultrahigh-performance concrete (UHPC) with different prefabricated crack widths immersed in pure water is investigated. The experimental results show that the initial matrix alkalinity and pore structure of UHPC are optimized by the incorporation of sea-sand. Regardless of the endogenous chloride ion and crack widths, the corrosion current density (icorr) of the reinforcement embedded in UHPC remains extremely low. The EIS measurement shows that the sea-sand UHPC exhibits high matrix resistance (Rc) and charge transfer resistance (Rct). Furthermore, the electric double layer capacitance (CPEdl) values of rebar are less than 50 μF·cm-2, indicating that the embedded steel bar remain in the passivation state. Additionally, after 180 days of immersion in pure water, the sea-sand UHPC still has excellent resistance to reinforcement pitting corrosion. © 2025 American Society of Civil Engineers.

Keyword:

Bars (metal) Capacitance Corrosion resistance Corrosive effects Cracks Electrochemical corrosion Matrix algebra Passivation Pitting Pore structure Reinforcement Sand Seawater corrosion Steel corrosion

Community:

  • [ 1 ] [Huang, Wei]Dept. of Civil Engineering, Fuzhou Univ., Fuzhou; 350116, China
  • [ 2 ] [He, Lian]Dept. of Civil Engineering, Fuzhou Univ., Fuzhou; 350116, China
  • [ 3 ] [Chen, Rong]Dept. of Engineering, Fujian Chuangzheng Communications College, Fuzhou; 350116, China
  • [ 4 ] [Deng, Xuhui]Dept. of Civil Engineering, Fuzhou Univ., Fuzhou; 350116, China
  • [ 5 ] [Wei, Jiangang]Dept. of Civil Engineering, Fuzhou Univ., Fuzhou; 350116, China
  • [ 6 ] [Hassi, Sara]Dept. of Civil Engineering, Fuzhou Univ., Fuzhou; 350116, China
  • [ 7 ] [Zhou, Shikang]CCCC First Highway Xiamen Engineering Co., Ltd., Water Affairs Building, No. 157 Taidong Rd., Guanyinshan Business District, Xiame, Siming District; 361021, China
  • [ 8 ] [Zhang, Hengchun]CSCEC Strait Construction and Development Co., Ltd., No. 60 Rujiang West Rd., Mawei District, Fuzhou; 350015, China
  • [ 9 ] [Zhong, Zhengpeng]Guangdong Cloud & Sunshine Construction Engineering Co., Ltd., No. 120 West Huangpu Ave., Tianhe District, Guangzhou; 510168, China

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Source :

Journal of Materials in Civil Engineering

ISSN: 0899-1561

Year: 2025

Issue: 9

Volume: 37

3 . 1 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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