High Pressure Crack Injection

What is High-Pressure Crack Injection?

High-pressure crack injection involves injecting liquid under very high pressures into extremely narrow concrete cracks (less than 1/32" or 0.75 cm wide), usually Polyurethane. A High-Pressure Electric or Manual pump efficiently infiltrates cracks with a 98-100% success rate. The user regulates the liquid flow and pressure, typically between 2500-3500 psi, but it can be successfully injected as low as 400 psi. It is used where low-pressure injection is not practical and/or actively leaking.

Key Method of Injection

Plastic or Metal injection packers are installed at a 45-degree angle to the crack. This allows the polyurethane injection to penetrate from the middle, ensuring complete infiltration from one end to the other. The photo illustrates this crack injection method. Maintaining the optimal pressure range is crucial for a lasting repair without damaging the concrete. Some skill and patience are required, but it is not difficult to have an effective high-pressure crack injection.

Efficiency: Our single-component pumps are ideal for contractors seeking a time-saving solution for small hairline cracks. These pumps use activated or single-component polyurethane, making them the most popular choice for high-pressure crack injection.

Versatility: Consider our dual-component pumps, which work seamlessly with two-component polyurethane or epoxy for more extensive projects. These pumps allow you to tackle multiple jobs in a single day, minimizing downtime.

Ease of Use and Maintenance: Nextstar pumps are user-friendly and easy to maintain. Whether you opt for single or dual-component pumps, you’ll appreciate their reliability and performance.

High-Pressure Crack Injection Effectiveness

• Active Leaks: Our system effectively addresses leaking basement foundations that have previously undergone unapproved repairs (such as hydraulic cement or silicone). Even small, leaking vertical cracks can benefit from high-pressure injection.
• Low-Pressure Option: When concrete foundation cracks are visible but not actively leaking, the low-pressure method is a viable choice. It provides more flexibility in selecting polyurethanes and epoxies without harming the concrete.

Why Choose NextStar?

• Efficient Installation: On a single visit, you can drill and install High-Pressure Packers, allowing immediate polyurethane injection. Sealing between packers may not be necessary, depending on the crack size and polyurethane type.
• Cost-Effective Solutions: Our single-component pumps are perfect for busy contractors handling small cracks. For occasional high-pressure work, manual hand pumps offer an economical alternative.
• Time-Saving Dual-Component Pumps: Paired with two-component polyurethane or epoxy, our dual-component pumps significantly reduce project time compared to cartridge-based systems.
• Easy Maintenance: At the end of the day, clean the valve head and zerk, and you’ll be ready for the next job.

  Effective Injection Materials for High-Pressure Crack Repair

  Selecting the suitable material is crucial for successful high-pressure crack injection. Consider the following options:

• Activated Polyurethane: This type responds upon contact with moisture, and its reaction time can be adjusted by varying the activator amount.
  
  

• Single-Component Polyurethane: Expands at a fixed rate when exposed to moisture.
  
  

• Koster 2n1 Dual-Component Polyurethane: Solidifies as a hard resin without moisture but foams upon encountering water.
  
  

Ignoring cracks and leaks can compromise a structure’s integrity and lifespan. High-pressure crack injection offers a reliable and cost-effective solution, as recommended by the American Concrete Institute.