KJS Association Anchor Repair Association Hokkaido Regional Technical Training Seminar

High-durability ground anchor with a plate water stop structure and grease-free head, ensuring reliability and ease of maintenance.

The EHD Anchor HP (HyPer) method uses a high-adhesion ECF tendon with a durability of 100 years, and has enhanced the overall structure of the head, free length, and anchor body to achieve superior safety, durability, and lifecycle economy. The anchor head features a transparent cap, grease-free fixture, and plate waterproof structure, which improves maintainability. Additionally, the fixture is equipped with a reliable adjustment function for increasing and decreasing anchor force as standard. 【Features】 1. Uses ECF tendon with silica sand adhesion and 100-year durability. 2. The grout adhesion strength of the tendon is improved to 1.5 times that of ordinary PC steel wire. 3. The plate waterproof structure has no rear waterproof structure and withstands water pressure of 2.0 MPa. 4. The anchor head structure has confirmed durability in a salt damage environment promotion test for 3600 hours. 5. The transparent cap and grease-free design reduce labor for anchor head inspections. 6. The lifecycle cost of the anchor reduces economic costs by 30%. 7. The fixture is equipped with a standard function for adjusting anchor force reliably. 8. Improved workability due to the new head structure. 9. CO2 reduction effect for environmental conservation due to the grease-free head. NETIS registration number HK-230017-A

• Reinforcement and repair materials
• Water stop
• Earth retaining wall/foundation reinforcement

By performing repairs, it is possible to improve to a corrosion resistance equivalent to the current ground anchors!

More than 90% of the locations where issues occur in ground anchors are said to be in the head and the back of the head. By repairing these areas, it is possible to improve the corrosion resistance to the level of the current ground anchors. The maintenance and management of ground anchors are carried out in accordance with the "Ground Anchor Maintenance Manual." Maintenance and management consist of three parts: inspection, investigation, and countermeasures. Specialized materials are required to conduct investigations and countermeasures. 【Flow of Ground Anchor Maintenance and Management】 ■ Inspection: Visual inspection of the structure where the ground anchor is installed ■ Investigation: Conducted when abnormalities are confirmed during inspection ■ Countermeasures: Implemented if the investigation results indicate a decline in performance during the service period *For more details, please refer to the PDF document or feel free to contact us.

• Reinforcement and repair materials

High durability anchor using epoxy coated and filled strand!

The "EHD Anchor" uses a durable tensile material, a bonded ECF strand filled with epoxy resin between each wire of PC steel strands, in accordance with civil engineering guidelines. Despite its simple structure, it enhances water tightness and achieves high durability. EHD stands for Epoxy High Durable. This anchoring method employs strands coated with epoxy resin, which has strong corrosion resistance, and embeds fine-grained silica sand on the surface to improve adhesion with grout. The boundary parts at the joints of the sheath are constructed robustly, allowing for long-term stable water tightness and durability, making the insertion of tendons easy and ensuring reliable injection of anti-rust grease, thus excelling in workability. **Features** - Uses high corrosion-resistant and durable PC steel strands filled with epoxy resin on the surface and between each wire, in accordance with JIS G 3536. - Each boundary part is partitioned with 1 MPa water tightness, maintaining high corrosion resistance over a long period. - The boundary parts also possess 1 MPa water tightness, and by using a flow bond for the restrained length, high corrosion resistance is maintained for an extended period. *For more details, please refer to the catalog or feel free to contact us.*

• Reinforcement and repair materials
• Water stop
• Earth retaining wall/foundation reinforcement

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