- Hong Kong SAR
Sikalastic®-841 ST
Application area | : | Interior | Exterior | Concrete |
Type | : | Polyurethane liquid membrane |
Storage Conditions | : | Must be stored properly in original, unopened and undamaged sealed packaging, in dry and cool conditions |
Chemical Base | : | Pure Polyurea |
Shelf Life | : | 12 month from date of production |
Colour | : | Part A: Clear | Part B: Grey *Grey, approx RAL 7005 |
Usage | : | Bridge deck waterproofing membrane | industrial and manufacturing facilities | cut and cover structures | submersed structures | walkways and balconies | floors and car park decks | structures in power plants |
Packaging | : | Part A (Isocyanate): 212 kg drums approx 189 litres | Part B (Amine): 191 kg drums approx 189 litres |
Gel Time | : | ~11 sec/ +20 °C |
Waiting Time/ Overcoating | : | 1 to 2 minimum/ +20 °C |
Curing Time | : | 24 h/ +20 °C |
Ambient Air Temperature | : | -20 °C … +50 °C |
Relative Air Humidity | : | < 85 % |
Substrate Temperature | : | +1 °C … +50 °C | ≥ 3 °C above dew point, beware of condensation |
Crack Bridging Ability | : | Class A5 (Static) | Class B4.2 (Dynamic) |
Product Temperature | : | > +65 °C |
Layer Thickness | : | > 2 mm (Crucial System) | ≥ 1.5 mm (Standard System) |
Mixing Ratio | : | Part A : Part B = 1 : 1 volume |
Tensile Strength | : | > 15 N/ mm² (DIN 53504) |
Shore D Hardness | : | ~45 - 50 (DIN 53505) |
Mechanical Resistance | : | ~230 mg (H22/ 1000 g/ 1000 cy) | ~100 mg (H17/ 1000 g/ 1000 cy) |
Viscosity | : | Temperature +20 °C: Part A (Approx 1200 mPas) and Part B (Approx 800 mPas) | Temperature +25 °C: Part A (Approx 750 mPas) and Part B (Approx 500 mPas) |
Density | : | Part A: Approx 1.12 kg/ litre | Part B: Approx. 1.01 kg/ litre *Density values determined at +20 °C |
Excellent Abrasion Resistance | : | Yes |
Not Resistant To Biogenic Sulphuric Acid | : | Yes |
Good Chemical Resistance | : | Yes |
UV Resistance | : | Yes |
Excellent Crack Bridging Properties | : | Yes |
Performs In Constant Dry Temperatures From -30 °C To +100 °C | : | Yes |
Certification | : | ISO 14001 SGS | ISO 9001 SGS |