Understanding the filling condition of PC grout through non-destructive testing! Non-destructive testing using wideband ultrasonic methods.
The "Grout Filling Survey" using Wideband Ultrasonic Technology (WUT) involves placing a pair of transducers directly above the sheath on the concrete surface to transmit and receive wideband ultrasound, recording the waveforms. By analyzing the frequency characteristics of the sheath reflection waves obtained from the recorded waveforms, the filling condition of the grout can be determined. The use of ultrasound, which is harmless to the human body, enables safe investigations. 【Features】 ■ High precision judgment ■ Wide application range ■ Improved work efficiency ■ Ensured safety ■ Cost reduction *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 - By adding waveforms measured at multiple points, the influence of interference waves is reduced, while amplifying reflected waves from the sheath to improve exploration accuracy. - Regardless of the thickness of the materials, accurate exploration is possible if the coverage of the front sheath is 250mm or less, the spacing between rebar is 125mm or more, and the spacing of PC steel materials is 110mm or more. - The use of compact survey equipment reduces the workload, allowing for exploration of approximately 20 to 25 locations per day. - Safe surveys can be conducted using harmless ultrasound. - This enables shortening of processes and reduction of work equipment, leading to cost reduction. *For more details, please refer to the PDF document or feel free to contact us.
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[Survey Achievements] ■ Ministry of Land, Infrastructure, Transport and Tourism: 1 ■ Expressway Companies: 80 ■ Railway Companies: 5 ■ Local Governments: 6 *For more details, please refer to the PDF document or feel free to contact us.
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Our company was established in April 1952, focusing on the uniqueness of prestressed concrete (PC) introduced from France at that time. As a pioneer of PC technology in our country, we have contributed to national land development and the advancement of local communities for over 60 years, primarily through bridge construction. Moving forward, we are committed not only to new construction projects but also to enhancing measures for the longevity of bridges, strengthening maintenance and repair technologies, and developing new technologies and methods, all in efforts to create PC structures that meet societal needs.