The rapid construction of innovative structures and megastructures is pushing the development of steel fiber reinforced cementitious composite (SFRCC). The interfacial enhancement technology from nano to macroscale for improving global properties of SFRCC is summarized here, including nanomaterials reinforcement of cementitious matrix, physical arrangement and nanomaterials modification of steel fiber. The interfacial bonding strength of SFRCC can be enhanced more than 150% via these approaches. To evaluate the effect of local interfacial technology on global mechanical properties of SFRCC, the structural performance of SFRCC with interfacial modification is reviewed. The energy absorption capacity of SFRCC can be improved over 20% through interfacial enhancement technology. The multi-scale mechanisms behind these approaches are illustrated through macroscale characterizations and molecular dynamics modeling. Furthermore, the key challenges and future prospects of enhancement approaches are also discussed from the perspectives of bottom-up system, nanoscale reinforcement, and durability properties in SFRCC, which are expected to inspire further improvement in interfacial performance and promote the application of SFRCC in practical engineering. Graphical abstract

中文翻译：

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钢纤维增强水泥基复合材料从纳米到宏观增强的界面技术

创新结构和巨型结构的快速建设正在推动钢纤维增强水泥基复合材料（SFRCC）的发展。这里总结了从纳米到宏观的界面增强技术，用于改善 SFRCC 的整体性能，包括胶凝基体的纳米材料增强、钢纤维的物理排列和纳米材料改性。通过这些方法，SFRCC 的界面结合强度可以提高 150% 以上。为了评估局部界面技术对 SFRCC 整体力学性能的影响，回顾了界面改性 SFRCC 的结构性能。通过界面增强技术，SFRCC的能量吸收能力可以提高20%以上。这些方法背后的多尺度机制通过宏观表征和分子动力学建模来说明。此外，还从 SFRCC 的自下而上系统、纳米级增强和耐久性性能的角度讨论了增强方法的关键挑战和未来前景，有望激发进一步改善界面性能并促进 SFRCC 在实际中的应用。工程。图形概要 有望进一步提高界面性能，促进 SFRCC 在实际工程中的应用。图形概要 有望进一步提高界面性能，促进 SFRCC 在实际工程中的应用。图形概要