3. Laboratory compaction test results on a clayey soil are listed in the table below. Moisture content (%) Dry unit weight (kN /m³) 6. 14.80 17.45 18.52 11 18.9 12 185 14 16.9 The following are the results of a field unit weight determination test on the same soil with the sand cone method: Calibrated dry density of Ottawa sand = 1560 kg/ m³ Calibrated mass of Ottawa sand to fill the cone = 0.505 kg Mass of jar + cone + sand (before use) = 8.59 kg Mass of jar + cone + sand (after use) = 4.38 kg Mass of moist soil from hole = 2.85 kg Moisture content of moist soil = 9.20 % Determine: a. Dry unit weight of compaction in the field. b. Relative compaction in the field.
3. Laboratory compaction test results on a clayey soil are listed in the table below. Moisture content (%) Dry unit weight (kN /m³) 6. 14.80 17.45 18.52 11 18.9 12 185 14 16.9 The following are the results of a field unit weight determination test on the same soil with the sand cone method: Calibrated dry density of Ottawa sand = 1560 kg/ m³ Calibrated mass of Ottawa sand to fill the cone = 0.505 kg Mass of jar + cone + sand (before use) = 8.59 kg Mass of jar + cone + sand (after use) = 4.38 kg Mass of moist soil from hole = 2.85 kg Moisture content of moist soil = 9.20 % Determine: a. Dry unit weight of compaction in the field. b. Relative compaction in the field.
Chapter2: Loads On Structures
Section: Chapter Questions
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Transcribed Image Text:3. Laboratory compaction test results on a clayey soil are listed in the table below.
Moisture content (%)
Dry unit weight (kN /m³)
6.
14.80
17.45
18.52
11
18.9
12
18.5
14
16.9
The following are the results of a field unit weight determination test on the same soil with the sand
cone method:
Calibrated dry density of Ottawa sand = 1560 kg/ m³
Calibrated mass of Ottawa sand to fill the cone = 0.505 kg
Mass of jar + cone + sand (before use) = 8.59 kg
Mass of jar + cone + sand (after use) = 4.38 kg
Mass of moist soil from hole = 2.85 kg
Moisture content of moist soil= 9.20 %
Determine:
a. Dry unit weight of compaction in the field.
b. Relative compaction in the field.
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