Protective devices, waterproof sheets, and elastic joint materials—these three elements solve the problems of expansion and contraction devices!
The "Triple Defense Joint" is a small-scale bridge expansion device that allows for quick installation, reducing the time required for lane restrictions and traffic openings. It features a double waterproof structure with elastic joint material in the gap section and a rubber waterproof sheet, completely shutting out water and preventing leaks that can cause damage to the bridge. Additionally, the structure includes a space between the rubber waterproof sheet and the protective device, ensuring that no wheel loads are applied to the waterproof section, significantly enhancing the durability of the waterproof function. 【Features】 ■ High water tightness with double waterproof structure ■ Long lifespan ■ Short installation time ■ Smooth passage due to a flat finish ■ Quiet operation ■ Patent obtained *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Scope of Application】 ■Applicable Bridges: RC bridges, PC bridges, Steel bridges ■Bridge Length: RC/PC bridges under 20m, Steel bridges under 15m ■Applicable Deck Space: 60mm or less ■Expansion Amount: Within 20mm ■Pavement Thickness: Asphalt pavement 60mm or more, Thin-layer pavement 10mm or more (Please consult us regarding application to pedestrian bridges.) *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
【Usage】 ■ For small-scale bridges *For more details, please refer to the PDF document or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Our company provides total management services to our customers, from inspection and investigation of infrastructure structures to repair and reinforcement work. We propose construction methods and materials suitable for each purpose and environment in the maintenance and management of structures. Additionally, we conduct high-quality inspections with correct knowledge, abundant experience, and reliable technical skills. Please feel free to contact us if you have any requests.