How to find the % of soil compaction

Question

Accepted Answer

Soil compaction can be determined by conducting a field test called the Proctor test.

The Proctor test involves compacting a soil sample in a mold and measuring its density.
The test is performed by compacting the soil in layers using a specified amount of energy.
The density of the compacted soil is then compared to the maximum density that can be achieved.
The percentage of soil compaction is calculated by dividing the achieved density by the maximum density and multiplying by 100.
For example, if the achieved density is 90% of the maximum density, the soil compaction is 90%.

Accepted Answer

By Core cutter method
Weight of cutter    = W1

Weight of soil + cutter    = W2

Wt. of soil     = W2-W1

Volume of cutter = V

Bulk density   ϒ= (W2-W1)/ V

Dry density ϒd=ϒ/(1+w)
Here w = water content

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