Functional ground calcium carbonates for optimal asphalt sealer formulations.

road in city with sunset

Asphalt sealer formulators face many challenges, from finding cost effective materials to achieving formulation cohesion. All at the prospect that they can deliver a product with the performance the consumers expect, at a price they can afford.

Omya application experts stand at the ready with Omyaroad to assist you with all your formulation prospecting whether it be on or off the road.

Benefits of Omyaroad

  • Reduced asphalt emulsion demand
  • Improved durability
  • Enhanced color

Reduced asphalt emulsion demand

Asphalt sealers filled with Omyaroad products decrease interfacial surface area, thereby, reducing the demand for asphalt emulsion in the formulation.


Omyaroad and Omyaroad F have a morphology that delivers the lowest interfacial surface area at all size classifications when compared to the comparable alternatives for asphalt sealers.

person sealing a parking lot

Improved durability

According to ISSA (#100) and ASTM (D3910-15) testing, asphalt sealers, containing Omyaroad show improved wet track abrasion results.


When you take a bi-modal approach utilizing both Omyaroad and Omyaroad F, invoking particle packing theory, this allows the formulator to take advantage of several additional cost cutting and performance enhancements.

3D Illustration of soil land geology cross section with asphalt road

Enhanced color

Omyaroad accentuates the properties of black pigments promoting a darker, richer, black color and enhances color development as asphalt sealers age.

Person sealing asphalt driveway
PropertyOmyaroadOmyaroad F
Surface area<0.6 m2/g<4.5 m2/g
Bulk density0.9 - 0.99g/cm30.6 - 0.68g/cm3

Tapped density1.65 - 1.74g/cm3

1.1 - 1.3g/cm3

CIELAB a*-0.2 - 0.2-0..2 - 0.2
CIELAB b*0 - 60 - 6

Technical support

Omya has a highly experienced technical services team which supports customers throughout the process of product development.


With technical laboratories at our headquarters and dedicated regional technical service hubs in different regions, Omya offers laboratory analysis, reformulation support, and implementation assistance to customers worldwide.

Talk to an expert_Portrait-Fabian-Doering.png

Related market

Omya offers a broad portfolio of Mineral Admixtures to add value in technically complex concrete systems such as SCC, UHPC,3D printing, shotcrete and eco-concrete. They provide strong benefits, such as an improved water/cement ratio, thus optimizing the chemical admixture efficiency or speeding up the hydration process.