Waterstop Injection using MC-Injekt: Effective Waterproofing Solutions

Stopping water ingress in construction projects is a critical task that requires reliable and effective solutions. The MC-Injekt range of injection resins provides a powerful tool for sealing cracks, crevices, and joints in concrete structures. These one and two-component systems are compatible with both dry and wet environments, ensuring a robust barrier against water intrusion.

Among the offerings, the MC-Injekt range stands out for its ability to stop heavily flowing water in building components quickly and safely using a combination of phthalate-free polyurethane foams and resins, enhancing its environmental compatibility.

For structural repairs requiring a flexible, hard foam, MC-Injekt 2700 is a preferred option. When used with a two-component injection pump, it provides reliable sealing even when mixed with water.

Each product in the MC-Injekt line addresses specific needs of construction and repair, establishing a comprehensive solution for waterstop injection challenges in various environments.

Waterstop injection technology

Waterstop injection involves specialised chemical formulations to block water ingress effectively. MC-Injekt offers advanced solutions to meet the specific requirements of construction sites and waterproofing needs.

Overview of MC-Injekt

MC-Injekt provides state-of-the-art injection resins designed for rapid water stoppage. These products are polyurethane-based and react quickly upon contact with water.

They feature low viscosity, which allows them to penetrate fine cracks and crevices effectively. One of their notable characteristics is the high volume increase, which forms a dense, impermeable barrier against water. Additionally, some variants offer an unlimited processing time, providing flexibility during application.

Importantly, these resins are phthalate-free, enhancing environmental safety. The ability to stop pressing water quickly makes MC-Injekt a go-to choice for both temporary and permanent waterproofing solutions in construction.

Importance in construction

Waterstop injection technology is crucial in modern construction for ensuring the longevity and integrity of various structures. By preventing water ingress, these injections protect against potential damage such as erosion, structural weakening, and corrosion of embedded materials.

The use of these products is particularly significant in areas with high water tables or frequent flooding. These resins are crucial for sealing cracks and joints, making them indispensable in the construction of foundations, basements, and tunnels.

Further, these technologies aid in external waterproofing efforts, such as curtain injection, which ensures that water does not permeate walls and floors. This reliable, durable waterproofing method is valuable for both new constructions and renovation projects, extending the lifespan of structures and reducing maintenance costs.

Application process

The application process of MC-Injekt involves three key stages: site preparation, the injection procedure, and curing and finishing. Each stage has specific requirements to ensure the successful application of MC-Injekt in water-bearing structures or ground.

Site preparation

Preparing the site is crucial for the success of the injection process. Initially, the area must be inspected for accessibility and safety to ensure it can accommodate the equipment.

Subsequently, any dirt, debris, or loose materials should be removed from the injection site. Some times in dry structures, the application area needs to be pre-wetted with water to facilitate the reaction of MC-Injekt.

Ensuring the surface is clean and wet enhances adhesion and effectiveness. Proper preparation prevents potential complications during injection and ensures a uniform treatment.

Injection procedure

The injection procedure begins with the setup of the injection pumps, which are used to deliver the resin into the structure. Injection pumps are utilised to ensure a consistent flow.

The resin is injected into pre-drilled holes or cracks in the structure, targeting specific areas where water infiltration is an issue. This process may involve the use of packers such as MC-Hammer Packer LP 18 or LP 12 for optimal injection.

The injection continues until the resin fills the voids and cracks completely, reacting with water to form a solid, water-resistant barrier. Constant monitoring during this process guarantees thorough coverage.

Curing and finishing

After injection, the curing phase begins immediately as MC-Injekt reacts with water. This reaction forms a durable, impermeable layer within the treated area.

The curing time may vary depending on the amount of water present and the environmental conditions. During this phase, the treated area should be inspected to confirm the effectiveness of the injection.

Once curing is complete, any excess materials or residues are cleaned up, and the site is restored to its original condition. Regular inspections and maintenance may be required to ensure long-term efficacy of the waterstop treatment. The process results in enhanced structure stability and water resistance.

Material properties

MC-Injekt materials possess unique chemical compositions and physical attributes that make them ideal for waterstop injection applications. Their chemistry enables effective bonding and sealing, while their physical characteristics ensure durability and adaptability in various conditions.

Chemical composition

MC-Injekt products feature a polyurethane-based formulation, specifically developed for high-resilience and water-reactive behaviours. The MC-Injekt 2133, for example, is a low-viscosity, fast-foaming injection resin known for its rapid expansion when in contact with water. This characteristic allows it to effectively stop water ingress by creating a solid barrier.

The chemical structure is phthalate-free, ensuring safety and environmental compliance. Polyurethane resins are chosen for their versatile bonding properties and durability, making them suitable for sealing cracks and voids in diverse construction materials.

Physical characteristics

Physical properties of MC-Injekt products reflect their capabilities in practical applications. The MC-Injekt 2700 and MC-Injekt 2700 L become hard-flexible, closed-cell foam upon contact with water, providing robust and long-lasting sealing.

These materials display high-volume increase within seconds, which is essential for quickly addressing and stopping water leaks. The flexibility of the cured foam allows for movement within the sealed structure, ensuring a lasting seal despite structural shifts or changing conditions.

Additionally, MC-Injekt products can be applied using both one-component and two-component injection pumps, accommodating different project needs and ensuring ease of application.

Safety and environmental considerations

When using MC-Injekt for waterstop injections, it is essential to consider safety and environmental impacts. These materials must be handled with care to ensure both user safety and environmental protection.

Safety guidelines:

• Personal Protective Equipment (PPE): Users must wear appropriate PPE, including gloves, safety goggles, and protective clothing, to prevent skin and eye contact.
• Ventilation: Ensure adequate ventilation in the working area to avoid inhalation of fumes.
• Handling Instructions: Follow proper handling instructions as noted in the safety data sheet.

Environmental considerations:

• Disposal: Dispose of any waste material according to local environmental regulations to prevent contamination.
• Non-hazardous Options: Where possible, opt for non-toxic and phthalate-free materials like MC-Injekt 2133, which offer safer alternatives for both humans and the environment.

Handling specific materials:

• MC-Injekt 2033 requires specific temperature considerations; ensure work stops if it drops below +6°C to maintain efficacy.
• Solid components should not enter the pump when using MC-Injekt 2133.

By adhering to these safety and environmental guidelines, users can effectively employ MC-Injekt products for waterstop injections while protecting both themselves and the environment.