Product Data Sheet Show all documents

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. Suitable for use in hot and tropical climatic conditions.

  • 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
Product Data Sheet Show all documents

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

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

Packaging

300 ml cartridges

12 cartridges / box

600 ml unipacks

20 unipacks / box

Refer to current price list for packaging variations

Colour

Oxide red

Product Details

Sustainability / Certifications / Approvals

SUSTAINABILITY

  • Conforms to LEED v2009 IEQc 4.1 Low Emitting Materials-Adhesives and Sealants (VOC content requirement: < 420g/l less water)
Product Information

Composition

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 information

System structure

Stand-alone solution:

Sealant

SikaSwell® S-2

With a SikaSwell® profile:

Adhesive

SikaSwell® S-2

Swelling profile

SikaSwell® A or SikaSwell® P
Technical Information

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

Application Information

Sag flow

< 2 mm (+23 °C / 50 % r.h.)

(ISO 7390)

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

Skinning time

60 minutes (+23 °C / 50 % r.h.)

Place SikaSwell® profiles onto SikaSwell® S-2 within a maximum of 30 minutes.

(EN 15651-1)

Material temperature

Minimum

+5 °C

Maximum

+35 °C

Ambient air temperature

Minimum

+5 °C

Maximum

+35 °C

Substrate temperature

Minimum

+5 °C

Maximum

+35 °C
Consumption

Consumption

Size of triangular section

300 ml cartridges

600 ml unipacks

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.
Application steps

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 EQUIPMENT

Clean all tools and application equipment immediately after use with Sika® Colma Cleaner. Hardened material can only be removed mechanically.

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