Straßengranulaten

Straßengranulaten, commonly translated as road granules or street granules, refers to a specific type of aggregate used in road construction and maintenance. These granules are typically small, irregularly shaped particles of stone, slag, or recycled materials. Their primary function is to provide surface texture and enhance skid resistance on road surfaces.

The composition of Straßengranulaten can vary depending on the intended application and available materials. Common sources include crushed basalt, granite, limestone, and various types of industrial by-products like blast furnace slag. Increasingly, recycled asphalt pavement (RAP) and crushed concrete are also processed into granules for this purpose, contributing to sustainability in road construction.

These granules are often applied to asphalt surfaces, particularly in areas prone to wear or where improved grip is essential, such as intersections, curves, and braking zones. They are typically laid as a wearing course or incorporated into a surface dressing. The irregular shape and hard nature of the granules interlock to create a more durable and friction-rich surface compared to finer aggregates alone.

The use of Straßengranulaten is a cost-effective method for extending the lifespan of existing road surfaces and improving traffic safety by reducing the risk of skidding, especially in wet conditions. Their consistent size and quality are important factors for ensuring predictable performance and uniform road characteristics.