Revolutionizing infrastructure: The evolving landscape of electricity-based multifunctional concrete from concept to practice

Abstract

Traditional concrete, primarily employed for structural purposes, ensures the safety and reliability of infrastructure due to its excellent mechanical and durability properties. However, with the increasing scale of infrastructure, coupling of multifactorial and harsh service environment, expanding usage spaces, escalating demands for construction-environment harmony, and ever-rising human habitat standards, traditional concrete proves inadequate in meeting the sustainable requirements during construction and service phases, thus prompting its development towards multifunctionality. Electricity, the invisible force that propels modern civilization, has given rise to the emergence of electricity-based multifunctional concrete when combined with tangible concrete that carries human civilization. Through the structure–function integration and function-intelligence integration, this innovative composite material demonstrates excellent intrinsic properties as a structural material, including mechanical performances and durability, and superior electrical properties, such as conductivity, inductance, capacitance, impedance, thermoelectricity, piezoelectricity, among others. It, therefore, holds significant promise across various engineering applications, such as structural health monitoring, traffic detection, energy conversion/storage, de-icing and snow melting, building heating, electromagnetic protection, cathodic protection, grounding, and electrostatic protection. The ongoing research on electricity-based multifunctional concrete establishes a fundamental material framework for the transformation of infrastructure, offering a method to enhance safety, durability, functionality, and resilience of infrastructure. This review summarizes the relevant research progress on electricity-based multifunctional concrete, focusing on its design, composition, underlying principles, properties, and applications in infrastructures. Current technical challenges and future perspectives toward applying electricity-based multifunctional concrete in infrastructures are also discussed.