FRP jackets are a technical solution for the reinforcement, repair, and protection of underwater structures such as bridge pile foundations and piers. The system consists of a high-strength modified fiber composite jackets and underwater epoxy grout, forming a composite protective system comprising a protective layer, a structural layer, and a sealing layer. It meets standard requirements and has a durability design target of 50 years.

This technology involves wrapping damaged pile foundations with customized jackets and then injecting self-leveling epoxy grout to form a protective structure that can resist water erosion, chloride ion corrosion, and chemical media corrosion. The construction process does not require cofferdams or drainage equipment and is suitable for repairing various materials such as concrete piles, steel piles, and wooden piles. It also features resistance to salt and alkali, freeze-thaw cycles, and UV aging.

Applications:

1. Reinforcement of various corroded structural foundations and wharf pile foundations

2. Repair and reinforcement of bridge piers and columns (including concrete piles, steel piles, and wooden piles)

3. Pre-construction protection for newly built structures

Product Features:

1. Corrosion Resistance – Utilizing hydrogen ester polymers, it offers high-strength corrosion resistance, effectively withstanding seawater corrosion. Due to the chemical inertness of FRP jackets, they are resistant to various chemical agents, including acids and alkalis.

2. Underwater Construction – Because of its insensitivity to water, it maintains superior, tight adhesion even during underwater construction. In particular, it allows for "underwater construction" without the need for cofferdams and expensive drainage equipment. It is a time-saving, labor-saving, and cost-effective corrosion protection system.

3. Durability – It resists the interactive effects of climate cycles such as wet and dry conditions, temperature fluctuations, and freeze-thaw cycles, as well as the continuous or intermittent corrosion from water flow, ocean tides, wastewater, and electrolysis, exhibiting exceptional durability.

Product Advantages:

1. High bonding strength between epoxy grout and FRP jackets

2. Wide applicability, effective for wood, concrete, and steel piers

3. Excellent corrosion resistance, resistant to seawater corrosion and various chemical agents

4. Resistant to alternating wet and dry conditions, temperature fluctuations, and freeze-thaw cycles

5. Resistant to continuous or intermittent erosion from seawater tides, wastewater, and electrolysis

6. Can be applied underwater, eliminating the need for cofferdams and drainage systems

7. Quick and convenient construction, requiring no bridge closures or road interruptions

8. Epoxy grout can be manually injected or pumped.

9. FRP jackets can be fabricated on-site.

10. Meets marine biological environmental safety standards

11. Effective in brackish, fresh, and brackish waters

12. Maintenance-free; UV resistant

If you have similar projects, please provide these infomation, we will chat with you more

• Type, shape, size, and length of the piers to be repaired

• Number of piers to be repaired

• Location of the piers and cause of damage

• Area of damage to the piers

• Weather conditions during the repair period

• Work volume above and below water