Smart Cementitious Composites for Structural Health Monitoring

Smart cementitious composites integrate conductive additives within cement matrices to endow civil structures with intrinsic sensing capabilities. By incorporating carbon-based nanomaterials—such as carbon nanotubes, graphene derivatives and carbon fibres—these composites exhibit measurable changes in electrical properties in response to mechanical strain, crack formation or environmental variations. This multifunctionality transforms conventional structural elements into self-sensing systems, enabling continuous, real-time assessment of integrity without reliance on discrete external sensors. The global significance of these materials lies in their potential to enhance safety, reduce inspection and maintenance costs, and extend the service life of critical infrastructure. Practical applications range from embedded strain monitoring in bridge decks to early crack detection in pavements and modal analysis in high-rise buildings. Recent advances in filler dispersion methods, network formation and signal processing have markedly improved sensitivity, repeatability and durability, while novel manufacturing routes have paved the way for scalable implementation. By fusing material science innovations with structural engineering, smart cementitious composites are redefining the paradigm of structural health monitoring and asset management worldwide.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Smart Cementitious Composites for Structural Health Monitoring publication trend

The graph below shows the total number of articles in smart cementitious composites for structural health monitoring across all publications each year (not limited to Nature Index journals).

Technical terms

Smart cementitious composite: A cementitious material modified with conductive fillers to enable sensing of mechanical or environmental changes through electrical signals.

Piezoresistivity: The property of a material to exhibit a change in electrical resistivity under applied mechanical strain.

Percolation threshold: The critical concentration of conductive filler required to form a continuous electrical network within the composite.

Gauge factor: A dimensionless ratio expressing the sensitivity of a sensing material, defined as the fractional change in electrical resistance divided by mechanical strain.

Conductive network: An interconnected pathway of conductive fillers within a composite that allows electrons to move and thus supports electrical sensing.

References

1. A review on smart self-sensing composite materials for civil engineering applications. AIMS Materials Science (2016).
2. Popcorn Effect–inspired Self‐propagating Formation of High‐conductivity Cement Composite for Multifunctional Applications. Advanced Science (2024).
3. Structural modal identification and health monitoring of building structures using self-sensing cementitious composites. Smart Materials and Structures (2020).
4. An Experimental Study on Static and Dynamic Strain Sensitivity of Embeddable Smart Concrete Sensors Doped with Carbon Nanotubes for SHM of Large Structures. Sensors (2018).