Question

A site is compacted in the field, and the dry unit weight of the compacted soil (in the field) is determined to be 18 kN/m3. Determine the relative compaction if the maximum dry unit weight was measured to be 17 kN/m3. Express your answer as a percentage (but do not write the percentage sign in the answer box).

Answer 1

the relative compaction is 105.88 %

Step-by-step explanation:

Given;

dry unit weight of field compaction,
`W_d_((field))` = 18 kN/m³

maximum dry unit weight measured,
`W_d_((max))` = 17 kN/m³

Relative compaction (RC) of the site is given as the ratio of dry unit weight of field compaction and maximum dry unit weight measured

Relative compaction (RC) = dry unit weight of field compaction / maximum dry unit weight measured

`RC = (W_d_((field)))/(W_d_((max)))`

substitute the given values;

`RC = (18)/(17) = 1.0588`

RC (%) = 105.88 %

Therefore, the relative compaction is 105.88 %