Details

Autor(en) / Beteiligte

• Blake, G. R
• Black, C. A

Titel

Particle Density

Ist Teil von

• Methods of Soil Analysis, 1965, p.371-373

Ort / Verlag

Madison, WI, USA: American Society of Agronomy, Soil Science Society of America

Erscheinungsjahr

1965

Quelle

Wiley Online Library All Obooks

Beschreibungen/Notizen

• Particle density of soils refers to the density of the solid particles collectively. It is expressed as the ratio of the total mass of the solid particles to their total volume, excluding pore spaces between particles. Particle density is used in most mathematical expressions where volume or weight of a soil sample is being considered. Thus interrelationships of porosity, bulk density, and air space, and rates of sedimentation of particles in fluids depend on particle density. Particle‐size analyses that employ sedimentation rate, as well as calculations involving particle movement by wind and water, require information on particle density. Particle density of a soil sample is calculated from two measured quantities, namely, mass of the sample and its volume. The use of special liquids for determining particle density is probably necessary for highly accurate determinations on the more active clays or clay fractions.