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Dry Density of Soil Compaction Test by Core Cutter method and Calculation | Density of Soil Formula

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About This Video ------------------------
In this video, Er. Chetan Sharma, Corporate Trainer of Civil Guruji, Explaining About Dry Density of Soil Compaction Test by Core Cutter method and Calculation | Density of Soil Formula

Cylindrical core cutters of 130mm long and 100mm diameter are used for testing the in-situ compaction of cohesive and clay soils placed as fill. By using core cutter method, bulk density of soil can be quickly calculated and by determining the moisture content of the soil the dry density of the fill can be calculated and hence the voids percentage. A high percentage of voids indicates poor compaction of soil. A cylindrical core cutter is a seamless steel tube. For determination of the dry density of the soil, the cutter is pressed into the soil mass so that it is filled with the soil without disturbing the core contents. The cutter filled with the soil is lifted up. Dry Density of Soil Compaction Test by Core Cutter method and Calculation | Density of Soil Formula

Dry Density of Soil Compaction Test by Core Cutter method and Calculation | Density of Soil Formula For Calculation of Soil Compaction using Core Cutter Method some important parameters has to be derived. That important parameters are as follows,

Volume of Core Cutter
Weight of Core Cutter
Weight of Core Cutter + Weight of Soil
Soil Weight
Bulk Density
Moisture content or Water Content
dry Density and
Maximum dry Density

Volume of Core Cutter (Vc)
The Volume of Core Cutter refers to the volume of cylinder.

Volume of Core Cutter = Volume of cylinder.

Vc =π r² x h (or) Vc = πd²/4 x h

Weight of Core Cutter (Wc)
Measure the weight of Core Cutter from a calibrated Weighing balance machine and note as Wc. And it is taken in grams.

Weight of Core Cutter + Weight of Soil (Ws)
The weight of Core Cutter + weight of soil measures from Weighing balance machine and noted as Ws. And it is taken in grams.

Soil Weight (Wa)
The weight of soil (Wa) derives from ( Ws – Wc )

(Wa) = ( Ws – Wc )

Bulk Density (Yb)
Bulk Density derives from the formula,

(Yb)=(Ws-Wc / Vc)
where,

Wc = weight of Core Cutter,

Ws = weight of Core Cutter + weight of soil

Vc = Volume of Core Cutter

Moisture Content / Water Content (W) %
The Moisture Content / Water Content of the wet soil determines from Rapid Moisture Meter. The moisture/water content of wet soil derives from the formula,

W= (M/100-M) x 100
The moisture/water content is taken in Percentage.

Dry Density (Yd)
(Yd)= (100 x Yb / 100 + w)
where,

Yb = Bulk Density,

W = Moisture Content / Water Content

Maximum Dry Density
The maximum value of Dry Density is taken and it is noted in grams.

Compaction Percentage
Compaction Percentage calculates by dividing the dry density by maximum dry density.

Cp % = Dry Density / Maximum Dry Density

Dry Density of Soil Compaction Test by Core Cutter method and Calculation | Density of Soil Formula

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Dry Density of Soil Compaction Test by Core Cutter method and Calculation | Density of Soil Formula
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