Siiviläanalyysiä

Siiviläanalyysiä, also known as sieve analysis, is a fundamental laboratory technique used to determine the particle size distribution of granular materials. It involves separating particles into different size fractions by passing them through a series of sieves with progressively smaller mesh openings. The material is placed on the top sieve, and the entire stack is shaken or vibrated, allowing particles smaller than the mesh size to pass through to the next sieve. This process continues until all particles have been classified.

The retained material on each sieve is then weighed. By comparing the weight of the material retained on each sieve to the total weight of the sample, the percentage of particles within each size range can be calculated. This data is often plotted on a graph, with particle size on the x-axis and the cumulative percentage passing on the y-axis, creating a particle size distribution curve.

Siiviläanalyysiä is widely applied in various industries, including civil engineering, mining, agriculture, and manufacturing. In civil engineering, it is crucial for characterizing aggregates used in concrete and asphalt, as well as soils for construction purposes. In mining, it helps in evaluating the efficiency of crushing and grinding processes and in separating valuable minerals. The results from siiviläanalyysiä provide essential information for quality control, process optimization, and material selection.