Sikalastic®-851
Sikalastic®-851 is a two part, elastic, 100% solids, very fast curing and coloured Polyurethane/ Polyurea-Hybrid liquid applied membrane with moderate chemical resistance.
- Very fast reactivity and curing time
- Almost immediate return-to-service time
- Applicable in temperatures from -10 °C to +50 °C
- Performs in constant dry temperatures from -30 °C to +100 °C
- Excellent crack bridging properties
- Moderate chemical resistance
- Good abrasion resistance
- Not UV resistant
Usage
On Concrete:- Waterproofing on concrete bridge decks, membrane underneath hot rolled asphalt, certified in accordance to BBA/HAPAS
- Waterproofing on concrete bridge decks, membrane underneath mastic asphalt, tested in accordance to ETAG 033
- Waterproofing for submersed structures
- Waterproofing for cut and cover structures
- Waterproofing on walkways and balconies
- Waterproofing on floors and car park decks
- Water retaining structures in power plants
- Tank, bund and pit lining in fresh water areas of sewage and waste water treatment plants
- Truck bed lining
Advantages
- Very fast reactivity and curing time
- Almost immediate return-to-service time
- Applicable in temperatures from -10 °C to +50 °C
- Performs in constant dry temperatures from -30 °C to +100 °C
- Excellent crack bridging properties
- Moderate chemical resistance
- Good abrasion resistance
- Not UV resistant
Packaging
Part A | 211 kg drums approx. 189 litres (Isocyanate) |
Part B | 202 kg drums approx. 189 litres (Polyol/ -amine) |
Colour
Part A | clear |
Part B | grey |
Grey, approx. RAL 7004
Product Details
ENVIRONMENTAL INFORMATION
Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings
APPROVALS / STANDARDS
- Coating for concrete protection according the requirements of EN 1504-2/2004, DoP 02 07 0 20 5001 0 000003, certified by FPC Notified Body and provided with CE-Marking
- KIWA Polymer Institut GmbH, report No. P9016-1-E, 2014, Testing of static and dynamic crack bridging ability in accordance with DIN EN 1062-7, as well as bond strength after freeze-thaw-cycling with de-icing salt immersion and after thundershower cycling in accordance with. DIN EN 13687-1 and -2, in combination with Sikafloor®-161
- KIWA Polymer Institute GmbH, report No. P7934, 2014,Testing of the root resistance in accordance with DIN 4062
- Prüfinstitut Hoch, test report No. 140941, reation to fire classification in accordance with DIN EN 13501-1
- Dr. Kemski, determination of radon diffusion coefficient and radon diffusion length in accordance with DIN ISO 11665-10
- KIWA Polymer Institute GmbH, test report P-10064-1, test on accordance with German Guideline "Liquid applied waterproofing kits for buildings" (PG-FLK)
Composition
Poyurethane/ Polyurea Hybrid
Shelf Life
12 month from date of production
Storage Conditions
The packaging must be stored properly in original, unopend and undamaged sealed packaging, in dry conditions at temperatures between +5°C and +30°C. Protected from direct sunlight.
Density
| Part A | approx. 1.08 kg/l |
| Part B | approx. 1.04 kg/l |
Density values determined at +20 °C
Viscosity
| Temperature | Part A | Part B |
| +20 °C | approx. 2300 mPas | approx. 2300 mPas |
Shore A Hardness
~85 | (DIN 53505) |
Mechanical Resistance
~13 mg | H17 / 1000 g / 1000 cy |
~480 mg | H22 / 1000 g / 1000 cy |
Tensile Strength
| ~11 N/mm² | (DIN 53504) |
Crack Bridging Ability
Class A5 | Static |
Class B4.2 | Dynamic |
Chemical Resistance
Sikalastic®-851 is resistant to de-icing salts, bitumen, alkalis, fresh- and ground water and various chemicals. Contact Sika technical service for specific information.
Application
Mixing Ratio
Part A : Part B = 1 : 1 volume
Layer Thickness
~2 mm
Product Temperature
| Comp. A (ISO) | +70 °C min. / +80 °C max. |
| Comp. B | +65 °C min. / +75 °C max. |
Ambient Air Temperature
+1 °C min. / +40 °C max.
Relative Air Humidity
85 % max.
Substrate Temperature
+1 °C min. / +50 °C max.
Minimum 3 °C above dew point, beware of condensation
Curing Time
24 h at +20 °C
Gel Time
~11 seconds at + 20 °C
Waiting Time / Overcoating
1–2 min at +20 °C
Consumption
~1.05 kg/m² per mm thickness
APPLICATION INSTRUCTIONS
APPLICATION
Dose and mix with a suitable air driven or electrical plural component heated spray equipment. Both components must be heated up to +70 °C. The accuracy of mixing and dosage must be controlled regularly with the equipment. Thoroughly stir part B (Amine) using a drum stirrer until a homogenous colour is obtained.
CLEANING OF TOOLS
Clean all tools with Thinner C immediately after use. The application equipment has to cleaned and filled with Mesamoll. Hardened and/or cured material can only be removed mechanically.