Enhancing Structural Integrity, Safety, and Volume Efficiency
GeoCHEM’s range of high-performance aggregates and topping sands are engineered specifically for use with Percol reactive polymers. These are not standard construction sands; each media is treated with a specialized coating to ensure a permanent chemical bond with the polymer matrix. Whether you are restoring high-speed traffic lanes, airport taxiways, or industrial floors, these infills ensure a skid-resistant, durable, and cost-effective finish.
Concrete Topping Sand: Anti-Skid Surface Media
Engineered for Gray-Toned Structural Repairs
Concrete Topping Sand is a high-hardness media designed to create a reliable, anti-skid safety profile on concrete substrates. The specialized coating ensures that the sand does not "shell" or delaminate under heavy traffic, providing a permanent bond with the underlying Percol polymer or slurry.
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Best For: Pedestrian walkways, bridge decks, and industrial floors where slip resistance and color matching are critical.
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Performance: Delivers a durable, professional-grade finish that resists polishing.
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Packaging: Available in heavy-duty 12 lb. and 25 lb. moisture-resistant bags.
Asphalt Topping Sand: "Black Diamond" Safety Media

High-Friction Surface Protection for Asphalt Infrastructure
Our Black Diamond Asphalt Topping Sand is the industrial standard for ensuring lasting safety and skid resistance on asphalt repairs. Formulated for seamless integration with Alligator Glue, Asphalt Welder, GeoFlo, and Elastic Cement AC, this media ensures the repair area matches the friction coefficient of the surrounding pavement.
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Best For: Highways, off-ramps, and airport aprons where FOD (Foreign Object Debris) prevention and high-speed traction are required.
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Bond Strength: Patented coating process guarantees a superior chemical fusion with Percol binders.
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Packaging: Available in convenient 12 lb. and 25 lb. bags.
Percol Black Rock Aggregate Infill: Volume Enhancer
Industrial-Scale Efficiency for Deep Spall and Crack Repair
Black Rock Aggregate is a 3/8-inch, precision-coated mineral infill designed to increase the volume of Percol polymers and slurries while enhancing structural mass. By pre-treating deep cracks and potholes with Black Rock, contractors can significantly reduce the amount of liquid resin required, optimizing project budgets without sacrificing durability.
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The "No-Settling" Advantage: The patented coating ensures unparalleled flowability during installation, allowing the aggregate to settle tightly into the repair area for maximum interlock.
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Compatibility: Fully compatible with the entire Percol line, including Elastic Cement, Concrete Welder, GeoSet, and Asphalt Welder.
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Volume Optimization: Acts as a structural "skeleton" for the polymer, reducing thermal stress and increasing impact resistance.
Technical Resources & Project Planning
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Quantity Estimations: Utilize our Cack Calculator, Product Calculator, and Coverage Charts to determine the precise volume of polymer, aggregate and topping sand required for your specific infrastructure project.
Contact us today for expert solutions tailored to your asphalt and concrete repair needs.





