Endkorngröße

Endkorngröße refers to the maximum grain size found within a sedimentary rock or soil sample. It is a fundamental parameter in sedimentology and geotechnics, influencing the physical properties and behavior of the material. This maximum grain size is determined by the largest clasts or particles present, regardless of the distribution of other, smaller grain sizes.

In sedimentary rocks, the endkorngröße provides clues about the energy of the depositional environment. High-energy environments, such as fast-flowing rivers or storm surges, can transport and deposit larger sediment particles, resulting in a larger endkorngröße. Conversely, low-energy environments, like calm lakes or deep ocean floors, will typically exhibit smaller endkorngröße values.

In geotechnical engineering, the endkorngröße is crucial for assessing the strength, permeability, and compressibility of soils. Soils with a larger endkorngröße, such as gravels, tend to be more permeable and may have higher bearing capacities compared to fine-grained soils like clays. Understanding the endkorngröße helps in selecting appropriate construction materials and designing stable foundations. Various methods, including sieving and visual inspection, are used to determine the endkorngröße of a sample.