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<p>The pursuit of sustainable transportation infrastructure necessitates a fundamental paradigm shift from traditional volumetric design toward high-performance material optimization. This study investigates the potential of Graphene Oxide (GO) as a multi-scale reinforcement agent to enhance the structural and functional performance of hot mix asphalt (HMA-12.5). Through the synthesis of laboratory performance data with a mechanistic-empirical pavement audit under the TCCS 38:2022/TCDBVN framework, this research addresses the disconnect between nanomaterial chemistry and practical civil engineering. Results indicate that GO modification at an established optimum asphalt content (OAC) of 4.6% improves the static elastic modulus (E) by up to 34%, flexural tensile strength by up to 20%, and rutting resistance by up to 36%. These enhancements are attributed to the nano-scale locking effect and hydrogen bonding between GO functional groups and asphaltenes. The structural analysis demonstrates that the superior load-distribution capacity of GO-modified mixtures permits a 20% reduction in surface layer thickness while maintaining full regulatory compliance. This work validates GO not merely as a modifier but as a structural catalyst for thinner, more durable, and sustainable highway systems.</p>

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Experimental analysis of the structural and functional performance of asphalt concrete modified with graphene oxide

  • 期刊论文

  • 发表日期：

    2026年4月18日

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  • Huong-Giang Thi Hoang,
  • Hoang-Long Nguyen,
  • Hai-Bang Ly

摘要

The pursuit of sustainable transportation infrastructure necessitates a fundamental paradigm shift from traditional volumetric design toward high-performance material optimization. This study investigates the potential of Graphene Oxide (GO) as a multi-scale reinforcement agent to enhance the structural and functional performance of hot mix asphalt (HMA-12.5). Through the synthesis of laboratory performance data with a mechanistic-empirical pavement audit under the TCCS 38:2022/TCDBVN framework, this research addresses the disconnect between nanomaterial chemistry and practical civil engineering. Results indicate that GO modification at an established optimum asphalt content (OAC) of 4.6% improves the static elastic modulus (E) by up to 34%, flexural tensile strength by up to 20%, and rutting resistance by up to 36%. These enhancements are attributed to the nano-scale locking effect and hydrogen bonding between GO functional groups and asphaltenes. The structural analysis demonstrates that the superior load-distribution capacity of GO-modified mixtures permits a 20% reduction in surface layer thickness while maintaining full regulatory compliance. This work validates GO not merely as a modifier but as a structural catalyst for thinner, more durable, and sustainable highway systems.