After reading this article you will learn about the relationship between porosity and density of soil.
% soil space = bulk density/particle density
Since, % pore space + % soil space = 100
or % pore space 100 – % solid space
% pore space = 100 â€“ bulk density/particle density Ã— 100
% pore space = 100 (1 â€“ bulk density/particle density)
For example, a soil having bulk density of 1.5 and particle density of 2.65. Calculate the porosity of the soil.
% pore space = 100 (1-1.5/2.65)
Therefore, porosity of the soil is 43.40%.
A soil core was taken for the determination of bulk density. The measurements were:
Cylinder volume â€” 73.6 c.c.
Dry soil weight â€” 87.8 gm.
Particle density â€” 2.65 gm./c.c.
Calculate the percentage pore space of the soil.