What is Slurry Seal Made Of?

What exactly is slurry seal? Each slurry seal mixture is unique, with a composition similar to fog seal. Depending on the ingredients, we use it to impart a rich black color and texture, repair pavement defects such as cracks and voids, improve skid resistance, and provide protection against the elements to extend pavement life. Reapplied regularly to area roadways and other paved surfaces, slurry seal is an integral part of asphalt preventative maintenance.

Slurry Seal Ingredients

Dispersed from a specialized ‘slurry truck’ and carefully spread by asphalt technicians, slurry seal ingredients include a mixture of:

  • Emulsified Asphalt
    A mixture of small asphalt cement globules in water, along with an emulsifying agent, ensures a creamy, homogenous texture.

  • Aggregate
    We add several types of aggregate (tiny crushed rocks) to the mixture based on your sealing needs:
    • Type I 
      This fine grade of aggregate fills small surface cracks and provides smooth coverage on existing pavement. We also use type I slurries to prep surfaces for hot mix asphalt (HMA) overlays and surface treatments. Learn moreabout crack filling services.
    • Type II
      This coarser aggregate improves skid resistance on pavement. We also employ it to treat significant raveling (the wearing away of aggregate particles).   
    • Type III
      Coarse Type III treats severe surface defects, including depressions where water collects.
  • Mineral Filler
    Mineral fillers such as limestone dust, slate dust, hydrated lime, cement, ash, talc, and silica improve the structure and adhesion of the mix. 

  • Advanced Polymer Additives
    For micro-surfacing applications and to improve resistance against thermally-induced cracking, we may add advanced polymers such as elastomers (rubbers) and plastomers (plastics) to the slurry seal mixture. 

Watch the slurry seal process in action.

What specially combined slurry seal mixture can help you extend the life of your asphalt? Contact American Asphalt at 800-541-5559 to schedule a pavement evaluation today.

Originally posted at
https://www.americanasphalt.com/what-is-slurry-seal-made-of/

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