Researchers at the University of Pittsburgh are innovating concrete technology with the development of a new metamaterial concrete, aiming to modernize civil infrastructure systems. Traditional concrete, foundational since Roman times, is widely used but necessitates updates to address economic and environmental concerns. This new metamaterial concrete features lightweight and mechanically tunable properties, integrating energy harvesting and sensing capabilities. Amir Alavi, an assistant professor involved in the study, emphasizes the need for advanced materials that enhance functionality while minimizing resource usage without compromising strength.
This metamaterial concrete is designed for specific applications, exhibiting qualities like super compressibility and energy generation, though not sufficient for grid usage. It can power roadside sensors and monitor structural integrity or seismic activity. Its structure comprises reinforced auxetic polymer lattices within a conductive cement matrix, capable of compressing 15% and generating 330 μW under mechanical stress.
The collaborative effort also involves researchers from various institutions, such as Johns Hopkins and Georgia Tech, and aligns with the Pennsylvania Department of Transportation to apply this technology in real-world scenarios. This innovation could pave the way for more intelligent infrastructure, including support for autonomous vehicle navigation on highways.
