Red Pigments for Asphalt Coloring

Global Partner for Colored Infrastructure

Deqing Demi Pigment Technology Co., Ltd. is a leading supplier of asphalt-grade iron oxides for the global road construction industry. We provide the "High-Visibility" reds required for bus lanes, bicycle paths, and scenic roadways. Our pigments are engineered for the "Rough" environment of road paving, ensuring that the color is not just a surface coating but is integrated into the pavement's depth. We support municipal engineers and paving contractors with pigments that improve urban safety and aesthetics.

Asphalt Red Application Areas

• Bus & Cycle Lanes: High-contrast safety coloring for urban traffic management.
• Private Driveways: Decorative red asphalt for residential and estate paving.
• Park Pathways: Natural-looking red paths for public gardens and resorts.
• Industrial Zones: Color-coded zones for safety and logistics in factories.

Asphalt Red Technical Specs

Performance Features for Paving

• Intense Hiding Power: Effectively colors dark bitumen with minimal pigment loading.
• UV & Weather Resistance: Will not fade or wash away under rain and sun.
• Bitumen Compatibility: Does not affect the viscosity or binding properties of the asphalt.
• Wear Resistance: The color remains integrated even as the road surface wears down.

• Q: How much pigment do I need for red asphalt?

  A: Typically, 3% to 5% by weight of the total mix is sufficient to achieve a deep, vibrant red.

• Q: Will the red pigment make the road slippery?

  A: No, our pigments are fine powders that integrate into the binder and do not alter the friction coefficient of the aggregate.

Infrastructure Logistics & Dosing

We provide "Meltable PE Bags"—pre-weighted pigment bags that can be thrown directly into the asphalt mixer, where the bag melts and the pigment disperses without dust or waste.

Contrast Design: We work with city planners to provide specific "Safety Reds" that meet national traffic standards for color contrast and visibility under various weather conditions.

The Science of Bitumen Saturation

In asphalt coloring, the primary challenge is the "Black Binder Masking." We optimize our red pigments for "High Tinting Strength" to overcome the natural blackness of the bitumen. Using CIELab data, we maximize the "a*" value (redness) to ensure the road appears red even from a distance. We monitor the "Oil Absorption" to ensure the pigment doesn't "steal" binder from the aggregate, which could lead to road cracking. By maintaining a specific particle size, we ensure the red is visible even in low-light and wet conditions.