Determination of In-Situ Density and Dry Unit Weight of Soil by Core Cutter Method

Hello Friends, This is Mukesh from Learning Technology. I will tell you in today’s post, Determination of In-Situ Density and Dry Unit Weight of Soil by Core Cutter Method in a very easy way.

Object of Experiment

To determine the dry density of natural or compact soil, in-place, by the core cutter method.

Standard Reference

IS 2720 – 1975/88 (Part-XXIX) – Determination of in-situ density by core cutter method.

Equipment

1. Cylinder core cutter of steel beveled at one end, 127.5 mm long and 100 mm internal diameter with a wall thickness of 4.5 mm.

2. Steel dolly with a lip enables it to be fitted on the top of the core cutter

3. Steel rammer

4. Knife

5. Steel rule

6. Hand shovel

7. Balance

8. Container for water content determination

9. Thermostatically controlled oven to maintain the temperature between 105 degree Celsius to 110 degree Celsius

10. Straight edge

Test Procedure

1. Measure the inside dimensions of the core cutter and calculate its volume. Find the weight of the core cutter (without dolly).

2. Expose the small area of the site, about 30 cm square, to be tested and level it. Put the dolly on the top of the core cutter and drive the assembly into the soil with the help of the rammer until the top of the dolly protrudes about 1.5 cm above the surface.

3. Dig out the container from the surrounding soil, and allow some soil to project from the lower end of the cutter. With the help of the straight edge, trim flat the end of the cutter. Take out the dolly and also trim flat the other end of the cutter.

4. Find the weight of the cutter full of soil.

5. Keep some representative specimens of soil for water content determination.

READ MORE

• Determination of Shear Parameters of Soil by Triaxial Test
• Determination of Liquid Limit of Soil
• Determination of Consolidation Properties of Soil
• Specific Gravity of Soil Soild by Pycnometer
• Determination of Specific Gravity & Water Absorption of Aggregate
• Determination of Specific Gravity of Sand
• Determination of Fineness of Cement by Sieving
• Determination of Initial and Final Setting Time of Cement

Observation table

Remarks

Write your own experience from the experiment.