Polyurethane Injection Systems
Waterproofing with Polyurethane Resin Injection (PU Injection)
Polyurethane resin injection, also known as PU injection, is an effective waterproofing technique that prevents water from flowing through cracks and gaps. This method is an ideal solution for crack sealing, especially in large-scale structures such as concrete structures, tunnels, dams and mines.
Leaking concrete structures can be permanently crack repaired using polyurethane resin. Polyurethane resin reacts with water to form a waterproof foam. These resins vary in rigid and semi-rigid, flexible and semi-flexible foam forms. When polyurethane resin comes into contact with water, a chemical expansion occurs, which is extremely effective in filling concrete cracks. In addition, polyurethane resin helps protect concrete and rebar, preventing steel corrosion and maintaining the integrity of the structure.
PURIN offers crack injection solutions in a variety of structures such as tunnels, dams and mines, including underground structures such as basement walls, water and sewage tanks, manholes, parking lots. With the PURINSEAL product ranges, all types of water leaks can be sealed, from fine hairline cracks to large leaks.
Choosing the right polyurethane injection product for the application areas is critical to ensure a long-lasting and effective leak sealing. PURIN offers a wide range of products that differ in properties such as viscosity, expansion rate, reaction time, flexibility and hardness.
Perfect Waterproofing with PURINSEAL Products
PURIN meets all your waterproofing needs with its expertise in the sector and innovative product range. PURINSEAL series offers solutions suitable for all kinds of structures and crack types with different viscosity, expansion rate, flexibility and hardness options. With the right product selection, you can ensure maximum performance and long-lasting waterproofing in your projects.
Secure the future of your buildings with PURIN and make a difference in your projects with permanent waterproofing solutions.
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Application Areas
Our solutions that fill and seal gaps and cracks in structures and structural elements can be used in the following areas:
- Bridges
- Civil engineering projects
- Tunnels
- Mining structures
- Industrial and residential buildings
- Water storage and retention structures
- Soil stabilization
- Columns
- Beams
- Foundations
- Walls
- Floors
Advantages
- Provides excellent adhesion to concrete, masonry and stone surfaces.
- Effective performance in dry, damp and wet conditions.
- High mechanical strength properties.
- Fast curing ability whether in contact with water or not.
- Reaction time can be adjusted with accelerator.
- Injectable with both 1-component and 2-component pumps.
- Compatible with different surfaces such as concrete, mortar, metal, plastic coatings, cable coatings.
- Resistant to salts, alkalis and acids found in building components and ground.
- Prevents water ingress and leakage to prevent reinforcement corrosion.
Product Table
| Product | Viscosity (cP, 23ºC) | Mixing Rate | Structure | Starting of Reaction | Ending of Reaction | TDS |
|---|---|---|---|---|---|---|
| PURINSEAL EN 101 | 550 | 10% Catalyst | Forms a very flexible, closed-cell foam when in contact with water. | 10 sec | 100 sec | |
| PURINSEAL EN 105 | 400 | 10% Catalyst | Forms a very flexible, closed-cell foam when in contact with water. | 10 sec | 100 sec | |
| PURINSEAL EN 106 | 400 | 5% Catalyst | Forms a very flexible, closed-cell foam when in contact with water. | 10 sec | 70 sec | |
| PURINSEAL EN 112 | <100 | 5% Catalyst | Forms a semi-rigid foam when in contact with water. | 10 sec | 135 sec | |
| PURINSEAL EN 113 | 100 | 10% Catalyst | Forms a flexible, closed-cell foam when in contact with water. | 10 sec | 90 sec | |
| PURINSEAL EN 114 | 120 | 1% Catalyst | Forms a semi-rigid foam when in contact with water. | 10 sec | 120 sec | |
| PURINSEAL EN 115 | 200 | 5% Catalyst | Forms a semi-rigid foam when in contact with water. | 5 sec | 75 sec | |
| PURINSEAL EN 116 | 200 | 5% Catalyst | Forms a semi-rigid foam when in contact with water. | 18 sec | 95 sec | |
| PURINSEAL EN 301 | 150 | Without Catalyst | Forms a semi-rigid foam when in contact with water. | 20 sec | 140 sec | |
| PURINSEAL EN 401 | 250 | 1:1 | Forms a water-tight, flexible elastomeric gasket (70 shore A) | Pot Life: 40 min | Pot Life: 40 min | |
| PURINSEAL EN 402 | 400 | 1:1 | Forms a water-tight, rigid elastomeric gasket (70 shore D) | 20 sec | 40 sec | |
| PURINSEAL EN 403 | 300 | 1:1 | Forms a rigid foam in anhydrous environment | 10 sec | 80 sec | |
| PURINSEAL EN 404 | 350 | 1:1 | Forms rigid foam when in contact with water and forms a rigid elastomeric gasket in anhydrous environment. | 20 sec | 140 sec | |
| PURINSEAL EN404s | 350 | 1:1 | Forms rigid foam when in contact with water and forms a rigid elastomeric gasket in anhydrous environment. | 50 sec | 500 sec | |
| PURINSEAL EN 405 | 325 | 1:1 | Forms rigid foam in anhydrous environment, expands x1 of its volume (70 shore D) | 40 sec | 120 sec | |
| PURINSEAL EN 406 | 580 | 1:1 | Forms flex foam when in contact with water and forms a flex elastomeric gasket in anhydrous environment. | 5 sec | 230 sec | |
| PURINSEAL EN 450 | 200 | 1:1 | Forms a very flexible, closed-cell foam, foaming reaction only takes place in direct contact with water | 15 sec | 80 sec |
EN 101
EN 105
EN 106
EN 112
EN 113
EN 114
EN 115
EN 116
EN 301
EN 401
EN 402
EN 403
EN 404
EN 404s
EN 405
EN 406
EN 450
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