The Need

Current concrete structures, such as bridges, pavements, and buildings, lack integrated solutions for efficient temperature control. Existing heating or cooling systems are typically installed on or near the surface, risking damage and failing to provide uniform thermal management. There is a need for a robust, embedded solution that simultaneously reinforces concrete and enables active temperature regulation to improve safety, durability, and operational efficiency.

The Technology

OSU engineers have developed a hollow steel rebar that serves as both a structural reinforcement and a conduit for heating or cooling fluids or resistive wires. Embedded within concrete, the hollow bar meets or exceeds standard strength requirements while enabling direct thermal management of the structure. The system can circulate heated or cooled fluids, or house heating elements, to actively control the temperature of the concrete substrate, all while maintaining the mechanical performance of traditional solid rebar.

Commercial Applications

• De-icing and snow/ice prevention for airport runways, bridge decks, and parking structures
• Temperature management in industrial floors, commercial buildings, and pavements
• Cooling of concrete in hot climates to prevent expansion and cracking
• Smart infrastructure for energy-efficient buildings and public works

Benefits/Advantages

• Integrates reinforcement and temperature control in a single, code-compliant component
• Reduces risk of damage compared to surface-mounted systems and maintains structural integrity
• Enables year-round, uniform heating or cooling for enhanced safety and durability
• Flexible design compatible with existing construction practices and standards (ACI 318, IBC, AASHTO)