Leaks in concrete, masonry and natural stone structures can often be securely sealed and waterproofed by injection. However, to make leaking structures watertight for the long term, it’s essential to select the right injection material. On the basis of our extensive technical and practical experience, we have prepared a guide which will help you choose the optimal injection solution for your project requirements.
| REQUIREMENTS | CRITERIA | SUITABLE SIKA INJECTION PRODUCTS |
|---|---|---|
| Waterproofing cracks and around penetrations of width > 0.2 mm with hydrostatic pressure | Fast and stable foaming and expansion, for temporary sealing, plus very low viscosity and long-term flexibility for permanent sealing and waterproofing. |
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| Waterproofing cracks and around penetrations of width > 0.2 mm without hydrostatic pressure (dry, damp or wet surfaces) | Very low viscosity and long-term flexibility for permanent sealing. |
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| Force transfer across dry cracks ofwidth > 0.3 mm | Low viscosity, rigid, excellent adhesion and full bond to the crack substrate surfaces for structural bonding. |
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| Force transfer across dry cracks of width > 0.1 mm | Very low viscosity, rigid, excellent adhesion and full bond to the crack substrate surfaces for structural bonding. |
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| REQUIREMENTS | CRITERIA | SUITABLE SIKA INJECTION PRODUCTS |
|---|---|---|
| Waterproofing construction joints with and without hydrostatic pressure | Fast and stable foaming and expansion for temporary sealing, plus very low viscosity and long-term flexibility for permanent sealing and waterproofing. |
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| Waterproofing joints where the original joint sealing / waterproofing system is damaged or was not properly installed | Pre-installed SikaFuko® injection hose system in construction joints or as a back-up system on waterbars: |
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| Damaged expansion sections of waterbars: Low viscosity, long term high flexibility, with adjustable reaction times for permanent sealing. |
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| REQUIREMENTS | CRITERIA | SUITABLE SIKA INJECTION PRODUCTS |
|---|---|---|
| Grid injection (into the surface for lager areas e.g. Honeycombing or poor concrete compaction etc.) | Low viscosity, void filling, rigid material for load transfer in both (dry and damp areas) |
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| Very low viscosity, flexible, designed for permanent sealing (in wet areas) |
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| Curtain injection (e.g. behind the structure or element to seal leaks due to multiple tie bar holes or other multiple minor defects / leaks) | Extremely low viscosity, highly flexible, adjustable reaction time, designed for permanent sealing |
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Author
Matthias Ohnesorge
Corporate Product Engineer
Target Market Waterproofing
Sika Services AG
Responsible Person for Bangladesh
Farhana Haque Moutushi
Senior Engineer, Marketing
Target Market: Waterproofing & Roofing
Email: haque.farhana@bd.sika.com