Asphalt (Asphalt/Bitumen) is an organic cementitious material with high viscosity, black or dark brown in color. It is mainly derived from petroleum processing or natural minerals and is widely used in fields such as road engineering, building waterproofing, and industrial anti-corrosion. It is one of the core materials in modern infrastructure construction.

The uses of asphalt cover multiple industries, among which road engineering and waterproofing engineering are the two most core scenarios.

To meet the high-performance requirements of different scenarios, asphalt is often modified to enhance its properties. Common derivative products include:

• SBS modified asphalt: Significantly improves high and low temperature stability, suitable for high-grade highways in cold regions or rainy areas.
• Emulsified asphalt: Stable emulsion constructible at room temperature, used for bonding road bases and maintenance.
• Rubber modified asphalt: Incorporates waste tire rubber powder to improve elasticity, fatigue resistance, and reduce noise.
• Colored asphalt: Adding inorganic pigments (red, green) for urban footpaths and scenic roads, combining functionality and aesthetics.