Sikadur®-53

Epoxy resin

24 months from date of production

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to the packaging.

Refer to the current Safety Data Sheet for information on safe handling and storage.

Density value at +20 °C.

Product cured and tested at temperatures indicated and grouted and cured underwater.

Specimen size: 40 mm x 40 mm x 160 mm.

Product cured and tested at temperatures indicated and grouted and cured in air.

Specimen size: 12.7 mm x 12.7 mm x 25.4 mm.

Product cured and tested at temperatures indicated and grouted and cured underwater.

Product cured and tested at temperatures indicated and grouted and cured underwater.

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

Note: Pot life begins when the resin and hardener are mixed.

Note: Pot life is shorter at high temperatures and longer at low temperatures.

Note: The greater the quantity of product mixed, the shorter the pot life.

Note: Apply the following methods for obtaining a longer pot life at high temperatures:

1. Divide the mixed product into smaller quantities.
2. Cool down parts A and B before mixing. Do not cool below +5 °C.

20 kg kit yields approximately 9.8 litres of grout

Verify the substrate strength to ensure design strengths are achieved.

CONCRETE

Substrate surfaces can be dry, damp, wet or underwater. They must be stable, clean, free from ice, dirt, oil, grease, coatings, laitance, efflorescence, old surface treatment, all loose particles and any other surface contaminants that could affect adhesion.

Concrete must be at least 28 days old.

Suitable techniques for substrate preparation include the following:

• Hand-chiselling

• Abrasive blast cleaning

• Grinding

• Light scabbling

• Needle gunning

• Bush hammering

• High-pressure water blasting

1. Prepare the substrate mechanically using a suitable technique.
2. Remove any debris from pockets or holes for structural fixings.
3. Clean all substrate surfaces using industrial vacuuming equipment to remove dust and contaminants that may reduce adhesion.

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

STEEL

Surfaces must be cleaned and prepared thoroughly to a quality standard equivalent to SA 2.5 (bright metal) with a surface profile to satisfy the necessary tensile adhesion strength requirement.

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

Avoid dew point conditions.

For best results, the substrate must be dry.

1. Prepare the substrate mechanically using a suitable technique such as blast-cleaning or grinding.
2. Clean all substrate surfaces using industrial vacuuming equipment to remove dust and contaminants that may reduce adhesion.
3. Apply Sikadur®-53 as soon as possible to prevent re-oxidizing and rust formation.

CRACK INJECTION

Cracks must be clean. They can be dry, damp, wet or underwater.

Observe the following guidance:

• When using multiple units during application, do not mix the following unit until the previous unit has been used. This could otherwise lead to poor workability and an unfavourable handling time.

• Mix full units only.

• Do not thin with solvents.

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. 400 rpm).
2. Add Part B (hardener) to Part A.
3. Mix Parts A + B continuously for at least 3 minutes until a uniformly coloured mix with a smooth consistency has been achieved.
4. Pour the materials into a clean container and mix again for at least 1 minute to achieve a consistent mix and to ensure thorough mixing. Avoid over-mixing to minimise air entrainment. Note Total mixing time is 4 minutes.
5. IMPORTANT For underwater applications, after final mixing, wait 15 minutes at +20 °C to allow the mixture to pre-react for optimal adhesion.

IMPORTANT

Damage due to excessive long-term load

Sikadur® resins are formulated to have low creep under long-term load. However, due to the creep behaviour of all polymer materials under load, the long-term structural design load must account for creep.

1. Ensure that the long-term structural design load is lower than ¼ to ⅕ of the short-term failure load.
2. Consult a structural engineer for calculating the admissible load for the specific application.

ADHESIVE

1. Apply the mixed Sikadur®-53 to the prepared surface with a spatula, trowel, notched trowel, or with hands protected by gloves. If applying to matt damp concrete, brush Sikadur®-53 well into the substrate.

GROUTING RESIN

1. Select suitable formwork (permanent or temporary) of sufficient strength to contain the grout around areas such as base plates.
2. Ensure all edges and joints of the formwork are sealed tightly to prevent leakage or seepage of the grout.
3. Coat all surfaces of the formwork that will come into contact with the grout with polyethylene film or release agent to prevent adhesion.
4. Pour the mixed Sikadur®-53 into the formwork from one or two sides only. Ensure continuous grout flow during the complete grouting operation. Allow air release on the opposite side and minimise air encapsulation.
5. Where the void beneath the base plate is greater than the maximum allowable grout thickness (see Layer thickness), place the grout in successive lifts once the preceding lift has hardened and cooled.
6. Note For underwater applications, use a funnel or a feed hopper system connected with flexible tubes to provide enough hydrostatic height and pressure. Sikadur®-53 is poured underwater through the funnel or feed hopper system.

CRACK INJECTION

Preconditions

Preliminary trials have been carried out by a competent applicator experienced in crack injection, using injection equipment and appropriate injection pressures.

1. Insert or bond injection ports.
2. Cap the crack with a surface crack sealer.
3. Allow to cure.
4. Purge cracks with Sikadur®-53 until the Sikadur®-53 runs clean and contaminant-free.
5. Take cores at locations of cracks to clarify penetration of Sikadur®-53.

Sweep excess material into appropriate containers for disposal before it has hardened. Dispose of in accordance with applicable local regulations.

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