Capillary pycnometer

The capillary pycnometer is a measuring device for determining the grain density ρ _{s of} a soil. The grain density denotes the mass of the solid substance in the unit of space (g / cm³). For quartz sands this is around 2.65 g / cm³, but can be just 1.00 g / cm³ as with lignite or up to 3.00 for basalt. The grain density is determined by relating the dry mass m _{d of} a soil sample to its grain volume V _k :

${\displaystyle \rho _{s}={\frac {m_{d}}{V_{k}}}.}$

Here, the dry mass is determined after the soil sample has dried at 105 ° C; the grain volume is determined with the capillary pycnometer.

See also

• Pycnometer

Individual evidence

1. ↑ Helmut Prinz, Roland Strauss: Engineering Geology . 5th edition. Spectrum, Heidelberg 2001, ISBN 978-3-8274-2472-3 .