Sikadur®-42 HES IN

Epoxy resin, selected fillers and aggregates

12 months from date of production

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +35 °C. Protect from direct sunlight.

~2.0 kg/L (Part A+B+C mixed, +30 °C)

Very low

Part A : Part B : Part C = 4.5 : 1 : 21 (by weight)

Beware of condensation. Substrate temperature during application must be at least +3 °C above dew point.

Pot life begins when all parts have been mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the pot life. To obtain longer workability at high temperatures, the mixed adhesive may be divided into smaller quantities. Alternatively, if the application temperature is above +20 °C, chill parts A+B before mixing.

~2.0 kg/m² per mm thickness

CONCRETE

Concrete must be at least 28 days old.

Substrates must be sound, clean, dry or matt damp but free of standing water. Substrates must be free of contaminants such as ice, dirt, oil, grease, coatings, laitance, efflorescence, surface treatments and loose friable material.

STEEL

Surfaces must be sound, clean, dry and free of contaminants such as dirt, oil, grease, coatings and loose friable material.

IMPORTANT

Reduced adhesion due to surface contamination

Surface contaminants such as dust and loose material, including the contaminants generated during substrate preparation, can reduce the Product's performance.

1. Before applying the Product, clean thoroughly all substrate surfaces using vacuum or dust removal equipment.

CONCRETE

Suitable techniques for substrate preparation include the following:

• Abrasive blast cleaning

• High-pressure water blasting

• Needle gunning

• Scabbling

• Bush hammering

• Grinding

1. Prepare the substrate mechanically using a suitable technique.
2. Clean any pockets or holes for structural fixings to remove any debris.

The substrate has an open-textured, gripping surface profile.

STEEL

Suitable techniques for substrate preparation include the following:

• Abrasive blast cleaning

• High-pressure water-blasting

• Grinding

1. Prepare the substrate mechanically using a suitable technique.

The substrate has a bright metal finish with a surface profile to satisfy the necessary tensile adhesion strength requirement.

SHUTTER FORMWORK

Preconditions

Where formwork is to be used, all formwork must be of adequate strength, treated with release agent and sealed to prevent leakage.

1. Prepare the formwork to maintain a minimum 100 mm grout head to assist with placement.

Note: A grout box equipped with an inclined trough attached to the formwork will also improve the grout flow and reduce air voids.

IMPORTANT

Poor workability and unfavourable handling time due to wrong mixing

When using multiple units during application, do not mix the following unit until the previous unit has been used.

1. IMPORTANT Mix full units only. Prior to mixing all parts, mix Part A (resin) briefly using a mixing spindle attached to a slow speed electric mixer (max. 300 rpm).
2. Add Part A to Part B (hardener) and mix Parts A+B continuously for at least 3 minutes until a uniformly coloured smooth consistency mix has been achieved.
3. While mixing Parts A + B, gradually add Part C (aggregate).
4. IMPORTANT Do not mix excessively. Mix until a uniform mix is achieved.

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