Sikadur®-42 HF

ASTM D3755-20 Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Under Direct-Voltage Stress

24 months from date of production

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

2.0 kg / litre approx.

2,500 to 3,000 mPa.s approx. (+23^oC)

Note: 1 mPa.s = 1 centipoise (cps)

81 approx. (10 days at +20 ^oC)

Test specimen cured and tested at +23 ^oC / 50% r.h. and 50mm cube size.

Dynamic 7,800 MPa approx.
Static 6,300 MPa approx. 

(14 days at 20 ^oC)

A : B = 8 : 1 by weight

A : B = 3.6 : 1 by volume

0.50 mm min. / 40 mm max.

5 ^oC min. / 35 ^oC max.

50 minutes approx. @ 20 °C for 1.8 kg mix
35 minutes approx. @ 20 °C for 18 kg mix
(The temperature at which the Sikadur-42 HF is stored during the 24 hours before it is mixed will govern its potlife when mixed).

24 hours (+20 ^oC)

2.0 kg/m2 approx. per mm thickness

18 kg kit yields approximately 9 litres of grout

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.

Surface and base plate contact area must be clean and sound. For best results, the substrate should 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. Blastcleaning metal base plates to an acceptable quality standard equivalent to SA 2.5 for maximum adhesion. Apply grout immediately to prevent re-oxidizing.

Forming:
The consistency of the Sikadur®-42 HF epoxy grout system requires the use of permanent or temporary forms to contain the material around base plates, for example. In order to prevent leakage or seepage, all of these formers must be sealed. Apply polyethylene film or wax to all forms to prevent adhesion of the grout. Prepare the formwork to maintain more than 100 mm liquid head to facilitate placement. A grout box
equipped with an inclined trough attached to the form will enhance the grout flow and minimize air encapsulation.

Prior to mixing the components should be stored at 15-20°C for the previous 24 hours. Mix all of component A (Grey Resin) with all of component B (Hardener) using a slow speed drill (maximum 600 rpm) and windmill stirrer. Mix until a homogeneous and streak free mixture results.

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.