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:
- Tube to be set in maximum runs of 30’ (10m).
- Terminal ends to overlap to avoid discontinuity in coverage.
- Must have flush connection with substrate free of rubble and large debris.
- In conditions with uneven substrate profiles, consider use of Spetec WT400 to fill in imperfections or used as sole waterstop.
- S-curve technique to be used at horizontal-vertical transitions.
- R-ITS single or dual terminal boxes provide thread for zerk or button head fitting connection.
- Make a cup test to clearly note reaction time of polyacrylate gel mix.
- 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.
- 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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