Sikalastic®-851 R

Chemical base:

Modified polyurethane/ polyurea-hybrid.

Colour (mixed):

Grey (RAL 7004, approximate).

Technical properties:

• Density (mixed, to BS EN ISO 2811-1): 1 kg/L (approximate, at 23°C).

• Solid content by weight: >99%.

• Viscosity (component A and B): 2300 mPas (approximate, at 23°C).

• Tensile strength (to DIN 53504): 11.0 N/mm² (approximate, after 28 days, at 23°C).

• Elongation at break (to DIN 53504): 350% (approximate, after 28 days, at 23°C).

• Crack bridging ability (to BS EN 1062-7): Dynamic crack-bridging class B 4.2; static crack-bridging class: A 5.

• Resistance to root penetration (to DIN 4062): Free of penetration of the roots, free of growth into the ground.

• Reaction to fire (to BS EN 13501-1 and BS EN ISO 11925-2): Euroclass E.

• Chemical resistance: Generally resistant to bitumen and alkalis.

• Thermal resistance: Short term resistant to mastic asphalt (hot poured asphalt) applied at a maximum of 240°C. Elastic properties are maintained at temperatures as low as -30°C.

Application requirements:

• Ambient air temperature: 8–50°C.

• Relative air humidity: 85% (maximum).

• Substrate temperature: 5–55°C (≥3°C above dew point).

• Substrate moisture content: ≤4% (by weight). No rising moisture.