SikaSwell® S-2
Hydrophilic swellable joint sealant
SikaSwell® S-2 is a 1-part polyurethane hydrophilic sealant which swells in contact with water to seal all types of construction joints and penetrations in concrete structures. It is used to adhere the SikaSwell® A and SikaSwell® P profiles to the structure.
- 1-part, easy and fast to apply
- Highly economical joint sealing solution
- Versatile solution for joints and details
Usage
Joint sealing:
- Construction joints
- Pipe and steel work penetrations through walls and floor slabs
- Around all types of penetrations and construction joints
- Construction joints in cable ducts
Fixing / Adhering swellable profiles:
- SikaSwell® A Profiles
- SikaSwell® P Profiles
Packaging
300 ml cartridges | 12 cartridges / box |
600 ml unipacs | 20 unipacs / box |
Advantages
- 1-part, easy and fast to apply
- Highly economical joint sealing solution
- Versatile solution for joints and details
- Optimised expansion rate
- Permanently water resistant (wet & dry cycles)
- Good adhesion to various substrates
- BBA system approvals with SikaSwell® A-2010
Colour
Oxide red
Product Details
ENVIRONMENTAL INFORMATION
- Conforms to LEED v2009 IEQc 4.1 Low Emitting Materials-Adhesives and Sealants (VOC content requirement: < 420g/l less water)
Chemical Base
1-part polyurethane, moisture curing
Shelf Life
9 months from the date of production
Storage Conditions
The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +25 °C.
Always refer to packaging.
Density
| 1.24 kg/l (at +23 °C) | (ISO 2811) |
System structure
Stand-alone solution:
Sealant | SikaSwell® S-2 |
With a SikaSwell® profile:
Adhesive | SikaSwell® S-2 |
Swelling profile | SikaSwell® A or SikaSwell® P |
Shore A hardness
30–50, unswollen (7 d / +23 °C / 50 % r.h.) | (EN ISO 868) |
Change of volume
Time | Demineralised water | 5 % saline solution |
1 day | ~25 % | ~8 % |
7 days | ~100 % | ~25 % |
30 days | ~200 % | ~50 % |
Note: In a totally dry state, the Product shrinks to its original dimensions. The product then expands again upon further contact with water.
Swelling pressure
The pressure developed by the material depends on the stiffness of the surrounding concrete structure, which is influenced by the concrete quality, voids, gaps and other weaknesses.
In an ideal concrete structure the material can develop a swelling pressure up to > 10 bar.
Service temperature
Minimum | -20 °C |
Maximum | +50 °C |
Application
Sag flow
< 2 mm (+23 °C / 50 % r.h.) | (ISO 7390) |
Product temperature
Minimum | +5 °C |
Maximum | +35 °C |
Ambient air temperature
Minimum | +5 °C |
Maximum | +35 °C |
Substrate temperature
Minimum | +5 °C |
Maximum | +35 °C |
Substrate moisture content
Dry or matt damp. Do not apply in construction joints with standing water.
Curing rate
1 day (+23 °C / 50 % r.h.) | ~2.0 mm |
10 days (+23 °C / 50 % r.h.) | ~10.0 mm |
Skin time
60 minutes (+23 °C / 50 % r.h.) Place SikaSwell® profiles onto SikaSwell® S-2 within a maximum of 30 minutes. | (EN 15651-1) |
Consumption
Size of triangular section | 300 ml cartridges | 600 ml unipacs |
12 mm | 4.1 m | 8.2 m |
15 mm | 3.1 m | 6.2 m |
20 mm | 1.8 m | 3.6 m |
Consumption depends on the roughness and absorbency of the substrate.
Note: These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
SUBSTRATE QUALITY
The substrate must be sound, clean, dry or matt damp and free from all surface contaminants that could impair the adhesion of the sealant.
SUBSTRATE PREPARATION
EXISTING CONCRETE
Rough surfaces are susceptible to leaking. If the surface roughness cannot be leveled with SikaSwell® S-2 the roughness need to be removed. Use an appropriate Sika leveling mortar or mechanical treatment before the SikaSwell® S-2 and SikaSwell® A profile or SikaSwell® P profile is applied.
FRESHLY CAST CONCRETE
Freshly cast concrete can be smoothed with a batten where SikaSwell® S-2 is to be placed.
CLEANING OF TOOLS
Clean all tools and application equipment immediately after use with Sika® Colma Cleaner. Hardened material can only be removed mechanically.