How to Repair Concrete with Epoxy Injection Techniques (NEW)

Summary

This video introduces the CrackBond Resin Injection System, an easy-to-use crack repair kit designed for concrete slabs. It guides users through the process of cleaning the crack, applying Miracle Bond as a cap, and strategically installing injection ports. The script details the preparation and usage of LR 321 epoxy, ensuring correct dispensing and injection procedures for effective crack sealing. The repair process is completed by smoothing the cured epoxy for a professional finish, with results that make the crack barely visible. The video also emphasizes safety and the importance of following instructions for optimal results.

Takeaways

• 😀 The CrackBond Resin Injection System is a new, easy-to-use crack repair kit designed for structural concrete repairs.
• 😀 The kit includes everything needed to perform professional crack repairs using structural injection techniques.
• 😀 Start by cleaning the crack thoroughly with a wire brush and compressed air to remove debris.
• 😀 Miracle Bond is used to seal the crack on the outside, also referred to as capping the crack.
• 😀 The ports should be placed 8-10 inches apart, with Miracle Bond applied around the ports.
• 😀 Miracle Bond should be applied at least 1 to 2 inches wide along the length of the crack.
• 😀 The port passageway should be kept clear to ensure the epoxy flows correctly.
• 😀 Allow Miracle Bond to fully cure before starting the injection process, as the cure rate is temperature-dependent.
• 😀 During the injection, always wear protective eyewear and shake the LR 321 cartridge for 60 seconds before use.
• 😀 When dispensing the LR 321 material, ensure equal flow from both sides and use a flow control nozzle to manage the material flow.
• 😀 Inject epoxy starting from the lowest port (vertical cracks) or widest part (horizontal cracks) and proceed sequentially through the ports until completion.
• 😀 After curing, remove the ports with a hammer and smooth out the Miracle Bond capping material for a finished look.

Q & A

What is the purpose of the Crackbond resin injection system?

The Crackbond resin injection system is designed to repair cracks in concrete slabs using structural injection techniques, ensuring durable and long-lasting repairs.

Why is it important to clean the crack before applying the Miracle Bond?

Cleaning the crack thoroughly ensures that debris does not block the crack or interfere with the Miracle Bond's adhesion, allowing for a stronger and more effective repair.

What does 'capping the crack' refer to in the process?

'Capping the crack' refers to applying Miracle Bond over the crack on the outside, creating a seal before beginning the injection process to prevent leaks and ensure better material flow.

How far apart should the ports be placed when preparing the crack for injection?

The ports should be placed approximately 8 to 10 inches apart to allow for proper injection coverage along the crack.

What is the purpose of applying Miracle Bond under the port base?

Applying Miracle Bond under the port base ensures that the port's passageway remains unobstructed, allowing for efficient and uninterrupted injection of the epoxy material.

What is the correct procedure for preparing the LR 321 cartridge for injection?

To prepare the LR 321 cartridge, shake it for 60 seconds, then stand it upright for an additional 60 seconds. Afterward, insert the cartridge into the dispensing tool and remove the cap and end plug before dispensing.

What should be done before dispensing the epoxy from the cartridge?

Before dispensing, purge out any air bubbles by dispensing a short stroke of material into a disposable container. This ensures that the material is free of air and ready for use.

Why is it important to start the injection process with the lowest port or widest part of the crack?

Starting with the lowest port or widest part of the crack ensures that the epoxy flows through the entire crack evenly, filling all gaps and ensuring a complete repair.

What should be done after the epoxy reaches the next port during the injection process?

Once the epoxy reaches the next port, remove the tubing adapter from the previous port, attach it to the new port, and continue injecting until the epoxy reaches the next port.

How can the finish look of the repaired crack be improved after curing?

After curing, the ports can be removed with a hammer, and the Miracle Bond capping material can be ground smooth for a more finished and aesthetically pleasing appearance.