SikaSwell® A (AE)

• Conforms with LEED v4 MR credit: Building product disclosure and optimization — Material ingredients (option 2)

Acrylic polymer

12 months from the date of production

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5°C and +35°C. Always refer to packaging.

~1.50 kg/l (at +23°C)

Note: Swelling properties in saline water will be reduced and delayed. Use SikaSwell® A Maritim version.
Note: In a totally dry state the Product shrinks to its original dimensions. The product then expands again upon further contact with water.

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.
Note: In an ideal concrete structure the material can develop a swelling pressure of >10 bar.

Dry or matt damp. Do not apply in construction joints with existing standing water

The substrate must be sound, clean, dry or matt damp, free from all surface contaminants that could impair the adhesion.

EXISTING CONCRETE
Rough surfaces are susceptible to leaking. If the surface roughness cannot be leveled with SikaSwell® S-2 the roughness shall be leveled with an appropriate Sika leveling mortar or by mechanical treatment, before the SikaSwell® S-2 and SikaSwell® profile is applied.

FRESHLY CAST CONCRETE
Freshly cast concrete can be smoothed with a batten where SikaSwell® S-2 is to be placed.

IMPORTANT

Concrete cover
Insufficient concrete cover, low density concrete or voids will prevent the SikaSwell® A (AE) from developing its waterproofing function.

1. Place the SikaSwell® profile in the centre of the concrete structure.
2. In reinforced concrete maintain a minimum cover of 8 cm on both sides.
3. In unreinforced concrete maintain a minimum cover of 15 cm on both sides.

Sealant with SikaSwell® A (AE)

1. Apply SikaSwell® S-2 adhesive in a narrow bed (size of triangular section ~12 mm tall and ~12 mm wide ) onto the prepared substrate. Extrude enough material to level the roughness of the substrate.
2. Press the SikaSwell® A (AE) firmly into the fresh applied SikaSwell® S-2. Place the SikaSwell® A (AE) within a maximum of 30 minutes (+23 °C / 50 % r.h.).
3. Ensure full and continuous contact between the SikaSwell® S-2 and both the SikaSwell® A (AE) and the substrate is achieved.
4. Allow SikaSwell® S-2 to harden minimum 12 hours before placing concrete. For pouring height > 50 cm, SikaSwell® S-2 must harden for at least 24 hours before placing concrete.
5. Protect the SikaSwell® S-2 and the SikaSwell® A (AE) against water (for example, rain) until the concrete is placed.
6. During placement compact the fresh concrete well around the SikaSwell® A (AE) to achieve dense concrete without any honeycombing or voids.

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