Question: Laboratory compaction test results for a clayey silt are given in the following table Moisture Dry unit weight content kNm3 6 1480 8 1745 9

Laboratory compaction test results for a clayey silt are given in the following table Moisture Dry unit weight content kNm3 6 1480 8 1745 9 1852 11 189 12 185 14 169 Following are the results of a field unitweight determination test performed on the same soil by means of the sand cone method Calibrated dry density of Ottawa sand 1570 kgm3 Calibrated mass of Ottawa sand to fill the cone 0545 kg Mass of jar cone sand before use 759 kg Mass of jar cone sand after use 478 kg Mass of moist soil from hole 3007 kg Moisture content of moist soil 102 Determine a Dry unit weight of compaction in the field b Relative compaction in the field

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