Determine the relative compaction in the field based on the Laboratory compaction test results are as follow, volume of proctor mold is 1/30 c.f: Moisture Content (%) Dry Density (PCF). 10.3 118.8 14.1 118.2 12.3 120 9.5 117 15 116 Following are the results of a field unit weight determination test on the same soil with cone method: Calibrated dry sand of Ottawa sand 88.0 pef Calibrated mass of Ottawa sand to fill the cone-0.58 Kg Mass of jar + cone + sand (before use) 7.5 Kg Mass of jar + cone + sand (after use) 4.8 Kg

Determine the relative compaction in the field based on the Laboratory compaction test results are as follow, volume of proctor mold is 1/30 c.f: Moisture Content (%) Dry Density (PCF). 10.3 118.8 14.1 118.2 12.3 120 9.5 117 15 116 Following are the results of a field unit weight determination test on the same soil with cone method: Calibrated dry sand of Ottawa sand 88.0 pef Calibrated mass of Ottawa sand to fill the cone-0.58 Kg Mass of jar + cone + sand (before use) 7.5 Kg Mass of jar + cone + sand (after use) 4.8 Kg

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Compaction

Section: Chapter Questions

Problem 5.17CTP

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A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. A standard Proctor test was carried out in the laboratory and the following data were recorded Diameter of mold = 101.40 mmHeight of mold = 116.70 mmMass of mold = 4196.50 gram Specific gravity, Gs = 2.69 a) Determine the maximum dry unit weight and optimum water content.b) If the desired compaction in the field is 95% of the standard Proctor test results, what values of dry unit weight and water content would you specify?c) Explain why you select these values.d) What field equipment would you specify to compact the soil in the field, and why?e) How would you check that the specified dry unit weight and water content are achieved in the field?
A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. A standard Proctor test was carried out in the laboratory and the following data were recorded Diameter of mold = 101.40 mmHeight of mold = 116.70 mmMass of mold = 4196.50 gram Specific gravity, Gs = 2.69 Determine the maximum dry unit weight and optimum water content. If the desired compaction in the field is 95% of the standard Proctor test results, what values of dry unit weight and water content would you specify? Explain why you select these values. What field equipment would you specify to compact the soil in the field, and why? How would you check that the specified dry unit weight and water content are achieved in the field?
10. The results of a Standard Proctoretest is tabulated as follows: (SEE PICTURE) Determine the maximum dry unit weight of compaction Determine the optimum moisture content Determine the void ratio at the optimum moisture content Gs = 2.70 Determine the degree of saturation at the optimum moisture content A field unit determination test for the soil, yielded the following data. Moisture content = 12% and moist unit weight = 106 pcf. Determine the relative compaction.
arrow_forward Question A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. A standard Proctor test was carried out in the laboratory and the following data were recorded Diameter of mold = 101.40 mmHeight of mold = 116.70 mmMass of mold = 4196.50 gramSpecific gravity, Gs = 2.69 a) Determine the maximum dry unit weight and optimum water content.b) If the desired compaction in the field is 95% of the standard Proctor test results, what values of dry unit weight and water content would you specify?c) Explain why you select these values.d) What field equipment would you specify to compact the soil in the field, and why?e) How would you check that the specified dry unit weight and water content are achieved in the field? I Need The Answer of part (d) and (e)...
A sand cone test was conducted in the field. The mass of wet soil excavated from the hole is 3668.3g with a moisture content of 17.2%. Before and after the test, the sand cone apparatus weighed 10154.0g and 5749.4g. The cone can contain 1680g of Ottawa Sand (ρ=1.353g/cc). If the maximum dry density of the soil is 1.702g/cc, calculate the relative compaction.
A modified Proctor compaction test was carried out using a cylindrical moldwith a 1000 ml volume. Table 2 summarizes the results.a. Plot the compaction and ZAV curves (RD=2.75 and ρwater=1000 kg/m3).b. Determine the maximum dry density and the optimum moisture content.
The Table 4 shows the results of a Standard Proctor Compaction test. Based on the information provided, determine the following values. The maximum dry unit weight and the OMC.The degree of saturation at the maximum dry density if Gs = 2.70.What is the dry unit weight and the moisture range at 95% relative compaction (RC)?The degree of saturation at the maximum dry density if Gs = 2.70. Table 4: Results of a standard Proctor compaction test Trial No. 1 2 3 4 5 6 Moisture content, w (%) 6.2 8.1 9.8 11.5 12.3 13.2 Bulk unit weight (kN/m3) 16.9 18.7 19.5 20.5 20.4 20.1 Dry unit weight (kN/m3) 15.9 17.3 17.8 18.4 18.2 17.8
9. The results of a Standard Proctoretest is tabulated as follows: (CHECK PICTURE) Determine the maximum dry unit weight of compaction Determine the void ratio at the optimum moisture content Gs = 2.68 Determine the optimum moisture content Determine the degree of saturation at the optimum moisture content
A dry sand is placed in a container having a volume of 0.30cu.ft. The dry weight of sample is 31lb. Water is carefully added to the container so as not to disturb the condition of the sand. When the container is filled, the combined weight of soil llus water is 38.2 lb. a. Compute the void ratio in the container. b. Compute the specific gravity of the soil particle. c. Determine the dry unit weight.
A 1972 kg/mᶟ wet unit weight and 5.5% average actual moisture content were obtained from a laboratory data during the conduct of FDT on an aggregate base coarse materials, what is the dry unit weight of the soil? From the above laboratory data and the obtained dry unit weight of soil, What will be the degree of compaction of the compacted materials when a 1960 kg/mᶟ maximum dry density is used as a reference Laboratory compaction data?
A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. Astandard Proctor test was carried out in the laboratory and the following data were recordedDiameter of mold = 101.40 mm Height of mold = 116.70 mm Mass of mold = 4196.50 gram Specific gravity, Gs = 2.69 a) What field equipment would you specify to compact the soil in the field, and why?b) How would you check that the specified dry unit weight and water content are achievedin the field?
A modified proctor compaction test is performed on a sample of silty sand in a 150 mm diameter mold. The maximum dry unit weight is 19.6 kN/m3 and optimum water content is 11%. If the specific gravity solids is 2.65, draw the three-phase diagram of the sample in the mold and calculate all volumes and weight for that sample. What is the degree of saturation?