kornstørrelser
Kornstørrelser refers to the size of individual grains within a material, such as soils, sediments, powders, or crushed rock. The grain size distribution (GSD) describes the share of grains across size classes and is a key characteristic in geology, engineering and material science. It is usually presented as a cumulative distribution curve or as a histogram, and summarized with percentiles (for example D10, D50, D90) and with measures of sorting (uniformity) and skewness.
Classification scales: A widely used system in geology is the Wentworth scale, which partitions particles into
Measurement methods: Coarse fractions are commonly separated by dry or wet sieve analysis. Fine fractions are
Applications: Knowledge of grain sizes informs compaction and permeability in geotechnical engineering, drainage and water retention
Terminology: Sorting describes the spread of grain sizes; D50 is the median size; D10 and D90 indicate