bitumenaggregate

Bitumenaggregate refers to a pavement material formed by combining mineral aggregates with a bituminous binder. The resulting composite is typically produced as asphalt concrete, also called hot mix asphalt, or as other bitumen-based mixes used for surfaces, wearing courses, and sometimes for bases.

Components and proportions: aggregates such as crushed stone, gravel, and sand provide strength and durability, while bitumen acts as the binder. Typical binder content ranges from about 4% to 6% by weight of the mix, depending on aggregate gradation and performance requirements. The mix may include modifiers such as polymers to improve elasticity, temperature susceptibility, and overall performance.

Production and types: bitumenaggregate is produced in asphalt plants by heating aggregates and mixing them with molten bitumen at elevated temperatures for hot mix asphalt. Variants include warm mix asphalt and cold-mixed designs, which use lower temperatures or different formulations to reduce emissions, improve workability, and broaden application conditions.

Performance and testing: the material is designed to provide a smooth, durable surface with resistance to traffic loading, weathering, and moisture damage. Quality control involves checks of binder content, air voids, and compaction, as well as assessment of aggregate interlock and surface distress resistance. Standardized tests such as Marshall stability or job-muilt performance evaluations may be used to verify suitability.

Recycling and environment: reclaimed asphalt pavement (RAP) can be incorporated into new bitumenaggregate mixes, reducing material use and energy consumption. Warm mix technologies further reduce emissions and energy needs. End-of-life pavements are often resurfaced, milled, or recycled for new applications in road construction.