ACI Adhesive Anchor Installer Certification Practice Exam

Which part of the adhesive anchor system is allowed to be modified?

1. Adhesive components

2. Extension tube

3. Mixing nozzle

4. The dispenser

The correct answer is: Extension tube

In adhesive anchor systems, the extension tube is typically the only component that may be modified without compromising the performance of the system. This part serves as a conduit to deliver the resin adhesive from the cartridge to the mixing nozzle. Modifications can include adjustments in length or fittings to accommodate specific installation scenarios or to navigate around obstacles during the anchoring process. The other components, such as the adhesive components, mixing nozzle, and dispenser, are specifically designed to work together as an integrated system, and altering them could negatively affect the adhesive's curing process, bonding strength, or overall efficacy. Changing the adhesive components could lead to mismatches in chemical compatibility, while modifications to the mixing nozzle can affect the uniformity of the mixture. Similarly, the dispenser is calibrated for proper flow and pressure, and altering it could impact the application process. Therefore, the extension tube's flexibility for modifications is crucial for adapting the system to various installation conditions while maintaining the integrity and reliability of the adhesive anchor application.