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Tough Sheet Method (R)

Tough Sheet Method (R)

Tunnel lining repair method using ultraviolet-curing FRP sheets.

The Tough Sheet Method involves attaching a tough sheet to the existing lining surface of a tunnel to prevent the detachment of concrete fragments and other materials. The tough sheet is soft and easy to handle before curing, and it cures after being exposed to ultraviolet light for about 20 minutes once applied to the construction area. Therefore, compared to conventional repair methods, it allows for extensive work to be completed in a short time, making it an ideal method for construction in locations with time constraints, such as railway and road tunnels. 【Features】 ■ Excellent detachment prevention effect ■ Fewer construction steps ■ Quick sheet curing ■ Transparent material ■ Flexibly conforms to the substrate *For more details, please refer to the PDF document or feel free to contact us.

  • Concrete construction

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Gain CF sheet method [Structural reinforcement and peeling prevention measures]

Gain CF sheet method [Structural reinforcement and peeling prevention measures]

High-strength carbon fiber "Gaina CF Sheet" demonstrates significant reinforcement and repair effects on concrete structures without applying any load.

The Gain CF Sheet Method is a technique that involves applying carbon fiber sheets treated with high adhesive penetration to concrete structures for the repair and reinforcement of tunnels. It has passed tests for "flammability, self-extinguishing properties, and the safety of emitted gases," making it suitable for use within tunnels. Additionally, the sheets are treated for high penetration and, when combined with a specialized adhesive, exhibit excellent adhesive performance. This helps to prevent the sheets from peeling during construction, ensuring safe installation. There are two types of sheets with different weaves: the "CR" type, primarily used for fall prevention, which incorporates carbon fibers woven in both vertical and horizontal directions, and the "UD" type, designed for reinforcement, which aligns carbon fibers in one direction. With the addition of the UD300, which has a weight of 300g/m², alongside the existing UD200 and CR200 (both with a weight of 200g/m²), the application range of the Gain CF Sheet Method has expanded.

  • CR.jpg
  • う.jpg
  • Renovation and repair methods

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