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| Dow Corning 890 SL |
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One-part, self-leveling silicon material that cures to an ultra-low-modulus silicone rubber upon exposure to atmospheric moisture.
Dow Corning 890-SL Self-Leveling Silicone Joint Sealant is a one-part, cold-applied, easy-to-use, self-leveling silicone material that cures to an ultralow- modulus silicone rubber upon exposure to atmospheric moisture.
The cured silicone rubber remains flexible over the entire temperature range expected in pavement applications.
Asphaltic paving materials have low tensile strengths.
This requires a sealant that can seal the joint while placing only minimal stress on the asphaltic joint face.
Because of its ultra-low-modulus characteristics and good extension/compression recovery (+100/-50 percent of original joint width), Dow Corning 890-SL Self-Leveling Silicone Joint Sealant gives outstanding performance in highway, airport and bridge joints in which extreme movement occurs.
Dow Corning 890-SL Self-Leveling Silicone Joint Sealant is designed to perform as a durable joint seal for asphalt and/or concrete pavements.
Because of its ability to firmly adhere to asphalt and concrete pavements, Dow Corning 890-SL Self-Leveling Silicone Joint Sealant is particularly suitable for long-term sealing of asphalt to concrete shoulder joints, while its primary use is for asphalt-toasphalt and concrete-to-concrete expansion joints. (See Limitations.) |
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Color : Dark gray
Flow, Sag or Slump : Self-leveling
Extrusion Rate, grams per minute : 275-550
Percent Solids, percent minimum : 96
Specific Gravity : 1.26-1.34
Skin-Over Time, at 25'C (77'F), minutes (maximum) : 60
Cure Time, at 25'C (77'F), days : 14
Full Adhesion, days : 14-21 |
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