the percent compaction in the field
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- The field wt of soil sample is 1900 kg/m³and the unit wt of the soil particle is 2660 kg/m³. A. Compute the dry unit weight if the moisture content is 11.5%. B. Compute the void ratio. C. Compute the degree of saturation.1. Following are the results from the liquid and plastic limit test for a soil No. of blows, N Moisture Content , % 16 36.5 20 33.1 28 27.0 Plastic limit = 12.2% Determine the following: a. Liquid limit b. Plasticity index c. Liquidity index if the in situ moisture content is 26.5% d. Consistency indexSOL the b... SHETLIGVIE gardles 4. A soil sample having a liquidity index of 0.85, a plasticity index of 16.50 and a plastic limit of 11.45. The soil sample has a specicfic gravity of 2.68 and a void ratio of 0.77. a. Compute the degree of saturation. b. Compute the air void ratio.
- = 2.75, calculate the zero-air-void unit weight for a soil in lb/ft³ Given G, w = 5%, 8%, 10%, 12%, and 15%. 6.1 6.4 The results of a standard Proctor test are given below. Determine the maximum dry unit weight of compaction and the optimum moisture content. Weight of wet soil in the mold (Ib) GsYw Vzav = 1+ wG5 Volume of Moisture Proctor mold (ft³) content (%) GSYW 1/30 3.26 8.4 Ya = 1/30 1+ GW 4.15 10.2 1/30 4.67 12.3 1/30 4.02 14.6 Se = Gsw 1/30 3.63 16.8 6.5 For the soil described in Problem 6.4, if G, = 2.72, determine the void ratio and the degree of saturation at optimum moisture content.The following are results from the liquid and plastic limit test for a soil. No. of blows (N) Moisture content (%) 15 42 20 40.8 28 39.1 The plastic limit is 18.7%. 1. Compute the liquid limit using table. 2. What is the plasticity index of the soil. 3. What is the liquidity index if the water content is 24%. 4. What is the consistency index.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.
- 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 lb/cu.ft. Determine the relative compaction.PROBLEM 4: A soil sample has a maximum dry unit weight of 125 lb/ft?. If the sample has wet unit weight of 135 lb/ft?, Gs =2.65, moisture content w =11%. Compute the percent compaction in the field a. 97.3% c. 89.67% b. 94.13% d. 93.23%Laboratory compaction test results on a clayey silt are given in the following table:- Moisture content (%) Dry unit w3eight (kNm³) 14.80 8 17.45 18.52 11 18.9 12 18.6 14 16.9 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 = 1667 kg/m³ • Calibrated mass of Ottawa sand to fill the cone = 0.117 kg • Mass of jar + cone + sand (before use) = 5.99 kg • Mass of jar + cone + sand (after use) = 2.81 kg • Mass of moist soil from hole = 3.331 kg • Moisture content of moist soil = 11.6% Determine a. Dry unit weight of compaction in the field
- Problem 3: A soil sample has a liquid limit of 70 % and plastic limit of 50 %. U-line : PI = 0.9 (LL - 8) A- Line: PI = 0.73 (LL - 20) 60 1. Determine the point of intersection of the U-line and A-line. 2. Compute the shrinkage limit, SL using the plasticity chart. 3. Compute the Specific Gravity, Gs of the Soil if SR = 1.37. ALine PI -07NL - 20) 20 10 40 60 00 Liguid limi Plasticity indesQ2) A dry sample of soil having the following properties, L.L. = 52%, P.L. = 30%, Gs = 2.7, e = 0.53. Determine the following: 1- dry unit weight ,2-the porosity at plastic limit,1. A saturated 100 cm³ clay sample has a natural water content of 30%. It is found that the shrinkage limit occurs when the water content is 19%. If the sp. gr. of soil is 2.70.a. Compute the shrinkage ratio.b. Compute the volume of the sample.c. Compute the mass of dry soil sample