Injection Tube System
Injection Tube System
Injection Tube System / Injection Hose System
What is the Injection Tube System?
The Injection Tube System is a specialized grout delivery mechanism designed to seal cold and construction joints in concrete structures effectively. It is predominantly used in new construction projects where fresh concrete or shotcrete is applied adjacent to existing, cured concrete surfaces, resulting in the formation of a cold joint. By installing the injection tube prior to pouring the new concrete, the system facilitates the precise injection and distribution of resins and grouts into the cold joint after curing. This process provides an immediate and permanent seal, enhancing the structural integrity and waterproofing of the joint.
Key Advantages:
- Proactive Sealing Solution: Allows for the treatment of potential leak paths before they become problematic.
- Enhanced Durability: Improves the long-term performance of the structure by preventing water ingress and related deterioration.
- Efficient Installation: Integrates seamlessly into the construction workflow without significant additional labor or time.
- Versatility: Compatible with a variety of sealing materials, such as polyurethane resins and acrylate gels, to suit specific project needs.
By employing the Injection Tube System, engineers and contractors can ensure that cold and construction joints are securely sealed, thereby extending the lifespan of the structure and reducing the need for future maintenance or repairs.
SealBoss Injection Tube System: Advanced Sealing Solution for Construction Joints
Designed around a solid core, perforated PVC Tube.
The SealBoss Injection Tube System is engineered around a solid-core, perforated PVC tube, providing a robust and reliable conduit for sealing materials in concrete construction joints.
Installation and Waterproofing
Installed within joints prior to the pouring of new concrete, the injection tube proactively waterproofs and seals any cracks or voids that may be present. This system enables the creation of permanent, watertight joint seals, enhancing the structural integrity and longevity of the construction.
Easy to install and reasonably priced – The SealBoss Injection Tube System simplifies the job and provides for watertight joints.
SealBoss Injection Tube
The SealBoss Injection Tube Type 2 features a double-woven membrane that provides superior protection for the inner tube space against water and debris infiltration. A clean inner tube is crucial for optimal injection results, and this design ensures the injection pathways remain unobstructed.
Re-Injectable Applications
For applications requiring a re-injectable system, the SealBoss Injection Tube System can be used in combination with SealBoss® 2400 Acrylate Gel. This combination allows the injection tube to be flushed with water before and after the product sets, enabling multiple injections if necessary. The system’s compatibility with micro-fine cement injections further enhances its versatility, accommodating a wide range of sealing needs.
SealBoss Injection Tube Advantages
- SealBoss Injection Tube Type 1 and Type 2 to suit specifications & application requirements
- SealBoss ® Injection Tube Type 2 – Double membrane protects tube best from infiltration
- Deep penetration water stop seal
- Will not fold or crush with concrete weight
- Can be injected under flowing water
- NSF potable water applications possibles
Applications
- Cold Joints.
- Expansion Joints.
- New and Retrofit Construction
- Tunnels, Parking Garages, Slurry Walls, Pipe Joints
The SealBoss Injection Tube System: Efficient and Easy-to-Install Solution for Watertight Cold Joints
The SealBoss Injection Tube System is a highly efficient and user-friendly system designed to create durable, watertight cold joints in concrete structures. Cold joints —formed when fresh concrete is poured next to already-cured concrete— can be particularly vulnerable to water infiltration and stress-induced cracking. The SealBoss Injection Tube System effectively addresses these challenges by sealing the joint areas where leaks are most likely to develop.
A well-known characteristic of concrete is shrinkage while curing. Stress caused during this time and temperature changes provoke the development of small cracks and fissures.
Several design and reinforcement techniques help to control this effect, but cannot control them completely. Fine cracks of sometimes less than 0.1 mm are inevitable. These cracks are considered normal and generally do not cause any problems. However, at cold joints, the tendency to form larger cracks cannot be reduced.
Since old and new concrete do not bond together homogeneously and do not form a monolithic concrete body, stress cracks concentrate mainly in these areas. They easily conduct water and may cause severe damage.
The SealBoss Injection Tube System for sealing cold joints utilizes the natural tendency of concrete to form cracks. A special tube system is installed at the joint where leaks are most likely to occur. The system allows resin injection directly into the joint through a protected porous tube after completion of the structure. The resin penetrates through the perforation of the tube and fills the cracks and voids of the cold joint area thereby sealing the structure.
To be effective, the system must have certain properties. The tube must be sturdy enough to withstand the high pressure of placed concrete and it must resist concrete slurry penetration. On the other hand the injection resin must be able to penetrate the hose at a moderate injection pressure. The installation and injection process must be suitable for construction sites. The SealBoss Injection Tube System is designed to meet these requirements.
Injection Tube System Installation
Before pouring the new concrete the tube shall be attached to the existing surface as tight as possible and usually towards the middle of the future cold joint using suitable clips or by attaching it to the existing rebars. It is crucial that the hose is tightly fixed in the center of the joint area so that it can neither move nor lift during the concrete placement. Six to twelve inches between clips are typically recommended.
The hose must be placed in a manner that it will not touch the outside surface of the structure at any point. To allow sufficient injection pressures, the maximum length of injection tube should not exceed 30 feet.
Conclusion
The SealBoss Injection Tube System offers a sophisticated and reliable solution for waterproofing construction joints in concrete structures. Its proactive design, ease of installation, and adaptability make it an essential tool for engineers and contractors aiming to enhance the durability and integrity of their projects. By preventing water ingress and allowing for straightforward maintenance, it contributes significantly to the longevity and safety of infrastructure worldwide.
