Gainah SH sheet board method (tunnel, concrete structure reinforcement)
Existing Tunnel Reinforcement Method Using CFRP Strip Adhesive - Achieving Effective Tunnel Interior Reinforcement with High-Strength CFRP Using Carbon Fiber Sheets and Separators.
■NETIS Number: KT-230046 Technology Name: Fiber Sheet Adhesive Method for Tunnel and Bridge Repair and Reinforcement "Gaina SH Sheet Board Method" * Reinforcement with a single-layer laminated fiber sheet using high-density carbon fiber (compared to standard multi-layer). * Compared to our carbon fiber sheet method of overlapping application, this method is expected to shorten construction time and reduce costs. * Lighter than our steel plate adhesive method. No anchor work is required due to adhesive application. This method involves fewer processes compared to our continuous fiber sheet method. * High strength allows for strip-like arrangement. Unfinished areas between strips can be visualized, enabling visual confirmation of crack progression after reinforcement. * High-performance impregnation agents ensure reliable impregnation, allowing for high-quality construction. * No special skills are required for adhesive and impregnation work, making it easy to secure construction personnel. * As a fiber sheet adhesive method, partial construction and partial adhesion are possible. It is flexible, allowing for easy application in corners.
basic information
In the CFRP method, carbon fiber is sewn with a separator, fixed to concrete with adhesive, and then impregnated to create FRP, allowing for strip placement due to increased strength, resulting in a high reinforcement effect. *Improved Workability By applying the adhesive and impregnating agent in separate processes, it is not dependent on the skill level of the workers. Additionally, because it is a lightweight and flexible material, workability is improved compared to our steel plate bonding method. *Realization of Strip Placement through Increased Strength Compared to our CFRP method, the weight can be increased up to 2,400g/m2, ensuring strength comparable to full bonding even with strip placement. Strip placement allows for monitoring of crack progression after reinforcement. *Expectations for Reduced Construction Time and Cost Savings.
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Applications/Examples of results
Reinforcement of tunnels, bridges, box culverts, etc. - Suitable for arch-shaped structures and upward construction - Suitable for wrapping reinforcement of columnar structures
Detailed information
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There is no need to remove the existing drainage pipe for the full application of two layers of carbon fiber.
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There is no need to relocate the lighting fixtures for the full application of two layers of carbon fiber.
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Tunnel - Shear and bending reinforcement of deteriorated concrete. It is flexible, allowing for reinforcement of arch-shaped structures. It can be installed in a strip configuration, and after installation, uninstalled areas between the strips can be visually inspected.
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Bridge reinforcement - pier reinforcement, existing deck, and girder reinforcement. Flexible, allowing application to curved and corner areas. Wrap-around reinforcement is also possible.
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Box culvert reinforcement can also be applied to bends and corners.
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The adhesive and the impregnation agent can be treated as separate processes, allowing for the use of an impregnation agent with excellent impregnation properties.
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Sheet lamination structure
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Reinforcement work of box culverts on the highway.
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[End] [September 26 (Thursday) - 27 (Friday), 2024] We will be exhibiting at the "Highway Tech Fair 2024"!
Our company will be exhibiting at the "Highway Tech Fair 2024" held at Tokyo Big Sight from September 26 (Thursday) to 27 (Friday), 2024. The event aims to promote the dissemination and utilization of construction and management technologies for highways, as well as to gain a broader understanding of highway projects from customers and society, providing various opportunities. We plan to showcase various products, including the "Gaina SH Sheet Board Method" for reinforcement and fall prevention measures for concrete structures, as well as the "Bolt Tester," "Hawk MGS Anchor," "GPR Rust Checker," and the wireless axial force sensor "ZIKMO." We sincerely look forward to your visit.
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[End] [November 9 (Thursday) - 10 (Friday), 2023] We will be exhibiting at the "Highway Techno Fair 2023"!
Our company will exhibit at the "Highway Tech Fair 2023" held at Tokyo Big Sight from November 9 (Thursday) to November 10 (Friday), 2023. The event aims to promote the dissemination and utilization of construction and management technologies for highways, as well as to gain a broader understanding of highway projects among customers and society, providing various opportunities. We plan to showcase the "Gaina SH Sheet Board Method" for reinforcement and fall prevention measures for concrete structures, as well as the "HAWK Anchor Checker," "FSS Fail-Safe System," "GPR Rust Checker," and the wireless axial force sensor "ZIKMO," among others. We sincerely look forward to your visit.
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We will be exhibiting at the "Highway Tech Fair 2022" from November 24 (Thursday) to November 25 (Friday)! [Ended]
Our company will exhibit at the "Highway Tech Fair 2022" held at Tokyo Big Sight from November 24 (Thursday) to 25 (Friday), 2022. The event aims to promote the dissemination and utilization of construction and management technologies for highways, as well as to gain a broader understanding of highway projects among customers and society, providing various opportunities. We plan to showcase various products, including the "Gaina SH Sheet Board Method" for reinforcement and fall prevention measures for concrete structures, as well as the "HAWK Anchor Checker," "FSS Fail-Safe System," and "Saber EX Lock Bolt." We sincerely look forward to your visit.
