The Innovative CFRP Repair and Reinforcement Method for Steel Structures - In-situ VaRTM Method
Forming 3D-shaped CFRP stiffeners on-site! (There is an example of steel girder web buckling countermeasures in Tokushima Prefecture)
The "In-situ VaRTM Method" is a innovative resin impregnation technique that utilizes vacuum technology, allowing for the production of high-quality CFRP reinforcement materials on-site, tailored to the shape of steel materials, through a new CF sheet bonding method. <Strengths of the Method> 1. Three-Dimensional Reinforcement Materials ● Three-dimensional reinforcement materials, similar to ribs, can be produced on-site, enabling integration with existing steel structures. This is something that was not possible with conventional CFRP reinforcement methods but can be achieved with the On-Site VaRTM Method. 2. Ultra-Short Construction Period and Cost Reduction ● Reinforcement for one location of steel corrosion can be completed in a standard of 3 to 4 days (a 70-80% reduction in construction time compared to conventional CF sheet bonding methods), allowing for efficient steel reinforcement. ● Due to the shortened construction period and increased efficiency, costs can be reduced by 20-30% compared to conventional CF sheet bonding methods. 3. Measures Against Poor Curing During Resin Curing ● During curing, uncured resin is covered with a film, preventing issues such as amine brushing that can lead to poor resin curing. 4. Others ● The On-Site VaRTM Method is a unique method developed by Toray. ● It received the Minister of Economy Award at the 6th Infrastructure Maintenance Awards. ● Approved as a new repair and reinforcement method by Japan Ministry of Land, Infrastructure, Transport and Tourism. *For more details, please download the PDF or feel free to contact us.
- Company：Toray Industries, Inc.
- Price：Other
