How does core cutter method determine field density?

Care Cutter method of determining field density.

1. γ = weight of soil/volume of mold.
2. γd = γ/1+m.c.
3. Core Cutter apparatus consisting of steel cutter, 10 cm (4″) in diameter and 12.7 cm (5″) high.
4. Steel Dolley / collar, 2.5 cm high.
5. Rammer.
6. Straight edge.
7. Knife.
8. Balances sensitive to 1 gm & 0.1 gm.

Is code for field density test by core cutter method?

:2720
This part [IS:2720 (Part XXIX)-1975] deals with the determination of dry density of soil in-place by using a core-cutter.

What precaution will you take while removing core cutter from ground?

Precautions. Core cutter should be driven into the ground till the steel dolly penetrates into the ground half way only so as to avoid compaction of the soil in the core. Before lifting the core cutter, soil around the cutter should be removed to minimize the disturbances.

Why is field density required?

The in situ density of natural soil is needed for the determination of bearing capacity of soils, for the purpose of stability analysis of slopes, for the determination of pressures on underlying strata for the calculation of settlement and the design of underground structures. …

Why field density test is important?

Knowing the field density of the soil enables the estimation of the soil-bearing capacity, evaluation of the pressure on underlying strata, and computation of the settlement and stability of a natural slope.

What is the use of core cutter method?

The core cutter method is a test used to determine the in-situ dry density of soil. It is only used in fine-grained cohesive soils without stones. The test requires cylindrical core cutters about 130 mm long and 100 mm in diameter. The bulk density of soil can be easily calculated using this method.

In what type of soil core cutter method is used?

Core cutter method is used for finding field density of cohesive/clayey soils placed as fill. It is rapid method conducted on field.

What is the purpose of core cutter method?

Where does core cutter method best suitable in practical application?

1. Core cutter method of determining the field density of soil is only suitable for fine grained soil (silts and clay). This is because collection of undisturbed soil sample from a coarse grained soil is difficult hence the field properties, including unit weight, cannot be maintained in a core sample.

What test is used to determine field density of soil?

Proctor compaction test.

What is the purpose of sand cone test?

The Sand Cone Apparatus is used to determine the in-place density of any soil excavated to a stable condition with hand tools.

What is field density?

What is core cutter method of field density test?

Determination of field Density test of soil by Core Cutter Method. In this method, a cylindrical core cutter with a dolly of known dimensions as shown in fig. is used. A dolly is placed over the cutter to prevent damage to the edges of the cutter.

What is the purpose of the core cutter method?

The primary objective of the core cutter method is to determine the dry density of soil. It is used as a control test to check if the soil has acquired the designated dry density or not. The determined in situ dry density is necessary for the design of pavement and highways.

How to determine soil density?

The determination of voids ratio, porosity, and degree of saturation need the help of the density of soils. Determination of field Density test of soil by Core Cutter Method. In this method, a cylindrical core cutter with a dolly of known dimensions as shown in fig. is used.

How is the soil weight of a core cutter determined?

The weight of the soil completely filling the core cutter is then determined by direct weighing, and the moisture content of the soil is determined by running moisture content test. Wet density and the dry density of the soil is then computed. .