The Spetec Re-Injectable Tube System is a primary waterstop in cold joints and pipe joints. When used with acrylates like Spetec AG 200, it can be flushed with water at a pre-determined set time, creating a clean tube ready for subsequent use. It can also function as a standard single-use injection tube system with polyurethane injection resins like Spetec PUR H100 and Spetec PUR F400. The Spetec R-ITS is compatible with combination grouting techniques involving microfine cements.

Procedure:

Spetec R-ITS Application:

1. Tube to be set in maximum runs of 30’ (10m).
2. Terminal ends to overlap to avoid discontinuity in coverage.
3. Must have flush connection with substrate free of rubble and large debris.
4. In conditions with uneven substrate profiles, consider use of Spetec WT400 to fill in imperfections or used as sole waterstop.
5. S-curve technique to be used at hori­zontal-vertical transitions.
6. R-ITS single or dual terminal boxes provide thread for zerk or button head fitting connection.
7. Make a cup test to clearly note reaction time of polyacrylate gel mix.
8. Continue pumping to generate pressure, and achieve penetration through desired profile and substrate. Pump for maximum 75% of reaction time established in cup test, then remove zerk plug, and flush line with water.
9. Reinstall zerk plugs to prevent any unwanted substances in the re-inject­able tube.

Applications:

• Primary waterstop systems.
• Cold Joints.
• Expansion Joints.
• Replacement for traditional PVC waterstops.
• Combination grouting techniques.
• Tunnel crowns, slurry walls, and details.
• Stabilization/permeation combination grouting.

Advantages:

• Re-injectable functionality.
• Monolithic waterstop seal.
• Effective in applications with honeycomb concrete.
• Will not fold or crush with concrete weight.
• Can be injected under flowing water.
• Chemical resistance once injected.
• With NSF approved resin, can be installed in a potable water application.
• Dynamic valve behavior accordingly to pressure.

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