Sikadur®-42 ZA

Epoxy resin

24 months from date of production

Stored properly in original, unopened, sealed and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight.

~2 130 kg/m³ (A+B+C)

Component A : B : C = 2.2 : 1 : 15 by weight (Standard)
Solid / liquid = 4.7 : 1 by weight
Possibility to adjust the mixing ratio, depending on flowability:
Component A : B : C = 2.2 : 1 : (12–21) by weight
Solid / liquid = (4.2 – 5.2) : 1 by weight

Minimum 10mm and a Maximum of 60mm

+10°C min. / +30°C max.

+10°C min. / +30°C max.

≤ 4 % pbw

(200 g, adiabatic testing)

The pot life begins when the resin and hardener are 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 portions. Another method is to chill components A+B and C before mixing them (i.e. only when application temperatures are above +20 °C).

8.7 Litre (3.0ltr Component (A & B) and 15.0kg Component C)

Mortar and concrete must be older than 28 days (dependent on minimum strength requirements).
Verify the substrate strength (concrete, natural stone etc.).
The substrate surface (all types) must be clean, dry and free from contaminants such as dirt, oil, grease, existing surface treatments and coatings etc.
Steel substrates must be de-rusted to a standard equivalent to Sa 2.5
The substrate must be sound and all loose particles must be removed.
Substrate must be dry or mat damp and free from any standing water, ice etc.

Concrete, mortar, stone
Substrates must be sound, dry, clean and free from laitance, ice, standing water, grease, oils, old surface treatments or coatings and all loose or friable particles must be removed to achieve a laitance and contaminant free, open textured surface.

  
Steel
Must be cleaned and prepared thoroughly to an acceptable quality standard equivalent to SA 2.5 i.e. by blastcleaning and vacuum. Avoid dew point conditions.

  
Surface and base plate contact area must be clean and sound. For best results, the substrate shall be dry. Remove dust, laitance, oils, grease, curing compounds, impregnations, waxes, foreign particles, coatings, and disintegrated materials by mechanical means, i.e. chipping with a chisel, blastcleaning etc.
All anchor pockets or sleeves must be free of water. Apply grout immediately to prevent re-oxidizing / rust formation.
For optimum results:
When grouting areas or equipment that is sensitive to vibration, it is recommended that the contact surfaces are prepared according to the latest edition of the American Petroleum Institute’s Recommended Practice 686 “Machinery Installation and Installation Design”, Chapter 5.

Pre-batched units
Mix components A and B in the component A pail for approx. 30–60 seconds with a paddle attached to a low speed drill (300–450 rpm). Avoid aeration while mixing until the material becomes uniformly blended in colour and viscosity. Place the mixed epoxy into an appropriate mixing vessel. Slowly add the contents of component C (to keep air entrapment at a minimum) dependent on flow requirements (observe the correct mixing ratio) and mix until uniform and homogeneous. (approx. 3 min)
Mix only that quantity which can be used within its potlife.

  
Bulk packing (not pre-batched)
First, stir each component thoroughly. Add the components in the correct proportions into a suitable mixing pail. Mix the components. Use an electric low speed mixer etc as above for the pre-batched units.

  
Never mix component A and B without adding component C (as the exothermic reaction between A and B alone generates excess heat)
Leave Sikadur®-42 ZA to stand in the normal mixing vessel until the majority of entrained air bubbles have dispersed.

Sweep excess grout into appropriate containers for disposal before it has hardened.
Dispose of in accordance with applicable local regulations. Uncured material can be removed with Sika Colma Cleaner. Cured material can only be removed mechanically.