Heißasphalt

Heißasphalt, also known as hot mix asphalt (HMA), is a composite material used for paving roads, parking lots, and other surfaces. It is produced by heating and mixing aggregates such as gravel and sand with bitumen, a black, sticky, petroleum-based substance. The precise proportions of these components are carefully controlled to achieve the desired properties for a specific application.

The production of Heißasphalt takes place in asphalt mixing plants, where the aggregates are dried and heated to temperatures typically between 150 and 180 degrees Celsius. The bitumen is also heated to a similar temperature to ensure it can be thoroughly mixed with the aggregates. Once mixed, the hot asphalt is transported to the construction site in insulated trucks to maintain its temperature.

At the site, the Heißasphalt is spread evenly over the prepared base layer using paving machines. It is then compacted by rollers, which press the material together, creating a dense and durable surface. The compaction process is crucial for the long-term performance of the asphalt pavement, ensuring it can withstand traffic loads and environmental conditions.

Heißasphalt is the most common type of asphalt used in modern road construction due to its strength, durability, and relatively cost-effective production. Its smooth surface provides a comfortable driving experience and helps to reduce noise pollution. It is also a recyclable material, with old asphalt pavements often being milled and incorporated into new HMA mixes.