A technology that estimates the corrosion state of rebar by visualizing the interior of concrete using sub-terahertz waves. ☆★☆ A device utilizing non-destructive and non-contact sub-terahertz waves has been developed to achieve the establishment of a preventive maintenance management system. ☆★☆
コンステック
Our company is conducting joint research and development on "Evaluation technology for rebar corrosion in concrete using sub-terahertz waves" in collaboration with Shibaura Institute of Technology and Tohoku University Graduate School of Engineering. - What are sub-terahertz waves? Sub-terahertz waves are electromagnetic waves in the frequency range of approximately 10GHz to 300GHz (0.01THz to 0.3THz). Similar to terahertz waves, they have high permeability to non-polar substances like concrete, are absorbed by polar substances such as water, and exhibit high reflectivity towards metals. We have developed a technology to evaluate the condition of rebar in concrete by utilizing the characteristics of these sub-terahertz waves. 【Image above: Example output of corrosion degree evaluation】 〇 Efforts towards structural measurement We are constructing portable measurement devices (for close-range and remote evaluation) that can be applied to actual structures. 【Image below: Example of a device under development (photo shows a camera applied to the detector)】 We will continue to conduct experiments assuming measurements on actual structures using sub-terahertz technology, working towards establishing it as a useful measurement technique for preventive maintenance and extending lifespan.
