Soil Compaction Test (Modified Proctor)

Below are the results from a soil compaction test (Modified Proctor):

Test Data:

Modified Compactive Effort
Sample / Mass (g) / V (cm3) / p (t/m3) / w (%) / Pd (t/m3)
Soil Mass / Divided by 5 / m1, Mould / m2, Compacted Soil & Mould / m1-m2 / (m2-m1)/V / From Samples / (100*p)/(100+w)
1 / 2447 / 489.4 / 5599.5 / 7791.2 / 2191.7 / 1000.1 / 2.19 / 7.29 / 2.043
2 / 2289 / 457.8 / 5599.5 / 7815.2 / 2215.7 / 1000.1 / 2.22 / 8.29 / 2.046
3 / 2331 / 466.2 / 5599.5 / 7780.4 / 2180.9 / 1000.1 / 2.18 / 11.40 / 1.957
4 / 2373 / 474.6 / 5599.5 / 7725.3 / 2125.8 / 1000.1 / 2.13 / 13.12 / 1.879
Modified Compactive Effort Samples
Sample / Weight (g) / w, Moiusture content / Cup No.
m1, Cup / m2, Wet + Cup / m3, Dry + Cup / (m2-m3/m3-m1)x100
1 / 38.4 / 100.2 / 96 / 7.29 / 108
2 / 44 / 91 / 87.4 / 8.29 / 9
3 / 37 / 117.1 / 108.9 / 11.40 / 110
4 / 35.9 / 74.7 / 70.2 / 13.12 / 211

Questions:

  1. Analysis and calculations: show the steps and the analysis of the test data, including all formulas, calculations and references to other sources of information.
  1. Interpretation, results and conclusion: show the results of the test and possible limitations.

Field Density Test
Test Data Below:
Sand Replacement Method
Calibration of apparatus
ma (kg) / mb (kg) / m1 (kg)
6.9188 / 6.4738 / 0.445
Bulk Density of Sand
V (m3) / mc (kg) / md (kg) / m1 (kg) / P sand (t/m3)
(mc-md-m1)/V*1000
0.00124 / 7.245 / 5.059 / 0.445 / 1.404
Insitu Soil Density
m1 (kg) / m2 (kg) / m3 (kg) / m4 (kg) / m5 (kg) / P (t/m3)
Soil extract / m2-m3-m1 / m4/m5*P sand
0.445 / 7.2848 / 5.487 / 2.0326 / 1.353 / 2.110
Moisture Content
W / Ww / Ws (kg) / w
m4-Ws / After Dried / Ww/Ws
2.0326 / 0.0621 / 1.9705 / 0.032
Dry Density of Sand
P / w / Pd (t/m3)
P/1+(w/100)
2.220 / 0.032 / 2.109

Questions:

  1. Analysis and calculations: show the steps and the analysis of the test data, including all formulas, calculations and references to other sources of information.
  1. Interpretation, results and conclusion: show the results of the test and possible limitations.