A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC)

He, Tusheng; Xie, Wei; Wang, Feng; Yu, Zi; Xu, Fang; Li, Jinhui; Deng, Yitong; Ding, Qingjun; Hao, Yan; Xu, Wei; Yu, Haibin

doi:10.3390/coatings14121482

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A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC)

by

Tusheng He

^1,2,

Wei Xie

^3,4,

Feng Wang

⁵,

Zi Yu

³,

Fang Xu

⁶,

Jinhui Li

^3,4,*,

Yitong Deng

^1,7,

Qingjun Ding

^1,7,*,

Yan Hao

^3,4,

Wei Xu

⁶ and

Haibin Yu

⁶

¹

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

²

School of Chemistry and Civil Engineering, Shaoguan University, Shaoguan 512005, China

³

College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China

⁴

State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan 430200, China

⁵

Guangdong Gezhouba Zhao Ming Expressway Co., Ltd., Zhaoqing 526123, China

⁶

Faculty of Engineering, China University of Geosciences, Wuhan 430074, China

⁷

School of Materials and Science Engineering, Wuhan University of Technology, Wuhan 430070, China

^*

Authors to whom correspondence should be addressed.

Coatings 2024, 14(12), 1482; https://doi.org/10.3390/coatings14121482

Submission received: 16 October 2024 / Revised: 11 November 2024 / Accepted: 20 November 2024 / Published: 23 November 2024

(This article belongs to the Special Issue Advances in Nanostructured Thin Films and Coatings, 2nd Edition)

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Abstract

To further enhance the abrasion resistance of UHPC in demanding abrasion environments, this study investigated the effects of graphene oxide (GO) on the workability, mechanical properties, and abrasion resistance of UHPC. Utilizing 27Al Nuclear Magnetic Resonance (NMR), 29Si NMR, microhardness, and BET analysis, the study analyzed the mechanisms through which GO influences UHPC’s microstructure in terms of abrasion resistance. Additionally, molecular dynamics simulations were employed to examine the mechanisms by which GO enhances UHPC’s abrasion resistance at the nano and micron scale. The findings show that an optimal amount of GO can improve the mechanical properties and abrasion resistance of UHPC. When 0.03% of GO (by cementitious material mass) was incorporated, the impact on workability was minimal, yet compressive strength increased by approximately 1.80%, flexural strength by 3.02%, impact wear resistance by 1.78%, the abrasion loss rate decreased by 10.01%, ultimate impact energy increased by 1.76%, and the toughness index improved by 10.10%. GO enhances abrasion-resistant UHPC primarily by increasing hydration, refining pore structure, and improving the microstructure of the interfacial transition zone. While GO increases the hydration degree of the UHPC matrix, it does not alter the silicate chain in C-A-S-H gels within the paste. Additionally, the incorporation of graphene oxide can refine the pore structure of the UHPC cement paste and improve the microstructure of the interfacial transition zone (ITZ) between the aggregate and the cement paste. The molecular dynamics simulation reveals that, under abrasive forces, GO forms strong, stable chemical bonds with the C-A-S-H base atoms, significantly enhancing the abrasion resistance of C-A-S-H.

Keywords: graphene oxide; UHPC; abrasion resistance; microstructure; molecular dynamics simulations

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MDPI and ACS Style

He, T.; Xie, W.; Wang, F.; Yu, Z.; Xu, F.; Li, J.; Deng, Y.; Ding, Q.; Hao, Y.; Xu, W.; et al. A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC). Coatings 2024, 14, 1482. https://doi.org/10.3390/coatings14121482

AMA Style

He T, Xie W, Wang F, Yu Z, Xu F, Li J, Deng Y, Ding Q, Hao Y, Xu W, et al. A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC). Coatings. 2024; 14(12):1482. https://doi.org/10.3390/coatings14121482

Chicago/Turabian Style

He, Tusheng, Wei Xie, Feng Wang, Zi Yu, Fang Xu, Jinhui Li, Yitong Deng, Qingjun Ding, Yan Hao, Wei Xu, and et al. 2024. "A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC)" Coatings 14, no. 12: 1482. https://doi.org/10.3390/coatings14121482

APA Style

He, T., Xie, W., Wang, F., Yu, Z., Xu, F., Li, J., Deng, Y., Ding, Q., Hao, Y., Xu, W., & Yu, H. (2024). A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC). Coatings, 14(12), 1482. https://doi.org/10.3390/coatings14121482

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A Study on the Mechanism by Which Graphene Oxide Affects the Macroscopic Properties and Microstructure of Abrasion-Resistant Ultra-High-Performance Concrete (UHPC)

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