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What is DOWSIL™ 890-SL Fast Tack Silicone Joint Sealant?
One-part, self-leveling silicone material that cures to an ultra-low-modulus silicone rubber upon exposture to atmospheric moisture. The cured silicone rubber remains flexible over a wide temperature range in pavement construction applications.
Uses
- Concrete to concrete pavement joints
- New construction, repair or remedial applications.
- For applications requiring faster tack free times
Benefits
- Self-leveling, no tooling required
- Can be extruded from -20 to 120°F
- Unprimed adhesion to Portland cement concrete
- Flows into irregular joint widths and does not require tooling
- Movement capability +100% extension and 50% compression
- Ultra-low modulus
- Weather and UV resistant
- Fuel resistant-short term exposure
- Cold applied, ready to use as supplied. No heating or special preparation.
- Unprimed adhesion – primer is not required for bonding to Portland cement concrete. For optimum adhesion, the surface must be clean, dry and frost-free.
- Skin over – typically the sealant will have a skin-over time of one hour or less at standard conditions allowing roadways to quickly be opened to traffic
- Meets or exceeds the requirements of D5893.