you need
  • - cutting ring;
  • - knife;
  • - Hammer;
  • - scales;
  • - drying cabinet;
  • - shovel;
  • - measuring vessel;
  • - drummer densitometer.
Guide
1
For most soils, except deliquescent and loose, use the easiest way of determining the density - the method of cutting rings.
2
in place of the sample will clear the land surface by several centimeters.Set the cutting ring of 50 cm3.Hand or tapping hammer push the ring into the ground.
3
With a knife, cut the ring with soil samples.Strip the ground level with the lower and upper edges of the cutting ring.
4
Make weighing the mass of moist soil.Then dry the sample in an oven and weighed determine the weight of the dry soil.
5
To determine the density of the soil, use the formula:

Pb = (P1 - P2) / V;
Pskh = Pb / (1 + 0.01 * W);where

Pb - natural soil density, g / cm3;
Pskh - dry soil density, g / cm3;
P1 - the mass of soil drying up together with the ring, in grams;
P2 - the mass of the ring, in grams;
V - the internal volume of the cutting ring cm3;
W - soil moisture,%.
6
For soils with high flowability or with stony inclusions using a method called shurfikov.It is applied in all cases when cutting ring remove the sample is not possible.
7
place in determining the density of the soil, dig a small shurfik (vertical test excavation).Selected soil collect in a container and weigh.
8
Over shurfikom install a tin cone with a measuring vessel.Now pour shurfik cone dry sand and determine the amount of shurfika.To calculate the density of the soil using the above formula.Lack of ways - low accuracy.
9
When using the method of penetration into the soil clogging perform special rod (stamp) using a mechanical hammer.At the same time count the number of strokes needed to deepen the shaft at a depth of 10 cm. The density of the soil define a special table that reflects the relationship between the number of strokes spent on immersion of the stamp and the characteristics of the soil.