Unterbauzustand

Unterbauzustand refers to the condition of the underlying layers of a road or pavement structure. It encompasses the state of the subgrade, subbase, and base course, which are the layers beneath the wearing surface. A proper Unterbauzustand is crucial for the long-term performance and durability of any paved area.

The subgrade is the natural soil foundation upon which the entire pavement structure rests. Its load-bearing capacity and stability are paramount. The subbase and base course layers are constructed materials, typically gravel or crushed stone, designed to distribute traffic loads more evenly and protect the subgrade from moisture.

Assessing the Unterbauzustand involves evaluating factors such as material strength, compaction, drainage, and the presence of any defects like settlement, rutting, or cracking in these underlying layers. Poor drainage can lead to saturation, reducing the strength of the soil and materials, ultimately causing premature pavement failure. Insufficient compaction can result in settlement and instability.

Regular monitoring and assessment of the Unterbauzustand are essential for effective pavement management. This allows for timely identification of potential problems and the implementation of appropriate maintenance or rehabilitation measures. Addressing issues with the Unterbauzustand before they manifest as surface distress can significantly extend the service life of the pavement and reduce overall costs.