theoretical maximum value of the dry unit weight of soil at that water content is equal
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- From a compaction test the dry density of soil was found to be 1860kg/m3. when the water content was 15%. To determine the shear strength of soil in this condition a cylinder test specimen 100mm in diameter and 200mm long was prepared. Find the mass of oven dried soil and the water required for specimen. what would be the degree of saturation assuming specific gravity= 2.65.An undisturbed soil sample was prepared for a triaxial testing. The cylindrical soil sample is 50 mm in diameter and 100 mm long. It has a mass of 360 g. After finding the mass of the entire sample, a small portion was removed and a moisture content test was performed on it. The result of the moisture content test is shown in Table 3(a). Given the specific gravity, G, is 2.70. (i) Compute the moisture content (%) of the soil sample. (ii) By using the soil phase diagram, determine the bulk density (kg/m³), dry density (kg/m³), void ratio, porosity (%) and degree of saturation (%) of the soil sample.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.
- You are checking a field-compacted layer of soil. The laboratory control curve has the following values: gd (kN/m3) w (%) 16.34 14 16.57 16 16.65 18 16.50 20 16.26 22 15.87 24 The specification for compaction states that the field-compacted soil must be at least 95% of the maximum control density and within of the optimum moisture for the control curve. You dig a hole 1m3 in the compacted layer and extract a sample that weighs 17.2 kN wet and 14.1 kN dry. (a) What is the compacted gd? The compaction w? The percent compaction? Does the sample meet the specifications? (b) If the specific gravity is 2.68, what is the compacted degree of saturation? If the sample were saturated at constant density, what would be the water content?In falling head permeability test the initial head was 350 mm and the final head was 60 mm. The cross-sectional area of the burette was 200 mm2. The sample was 50 mm in diameter and 105 mm long. If the test took 8 hours and 30 minutes, what was the coefficient of permeability of the soil in m/s?A sample of the soil tested in triaxial with dimensions of 38 mm diameter and 76 mm height, its weight afterthe test was 205.1 g and after drying in an oven the weight was 175.6 g, determine the moisture content,bulk and dry densities and unit weights. 1- Analyse the results of liquid limit, plastic limit and plasticity indices determined 2- What is the importance of specific gravity, in the given examples?
- A cubical sample collected from Lobo shoreline (a soft marine silty clay) has been preparedfor testing in a true triaxial device. The dimensions of the sample are 78 mm by 78 mm by 78mm. The sample has a moisture content (w) of 68.5% and a moist density (ρ) of 1.43 g/cm3.The average specific gravity of solids (Gs) is 2.55.Determine(a) the void ratio (e),(b) the degree of saturation (S),(c) the moist density (γ),(d) moisture content (w) if the soil becomes saturated at the same total volume;(e) the density (ρ) of the soil if all pore fluid is dried off with no change in totalvolume.A soil sample has a volume of 29cm^3 and a mass of 45.5 g in its natural state in the field. After drying the mass of the sample reduced to 32g. if specific gravity of solids is 2.66. find a) water content b)Vs, Va, Vw c)void ratio d) Vw in 1m3 if the soil was fully saturatedA granular soil sample taken from the field has a density of 1900 kg/m3. In a laboratory test, it was found out that the density of the soil solids is 2600 kg/m3, moisture content of 11.5% and void ratios at its densest and loosest states are 0.43 and 0.62, respectively. Determine the following: a. In-situ dry density of the soil, kg/m3. b In-situ void ratio. c. Relative density, %.
- A 1 m thick soil with an initial void ratio of 0.94 was compacted by a roller and its thickness reduced by 0.09 m. The specific gravity of this soil is 2.65. A 178.0 g soil sample was collected from the compacted soil mass to examine the degree of compaction. The sample was dried in an oven for 24 hours and it had a dry mass of 142.4 g. Determine the degree of saturation of the soil after the compaction.Calculation problem: The volume of a sample in its natural state is 65.0cm 3 , and its mass is weighed as 128.00g. After drying, the mass is weighed as 102.5g. According to the test, the specific gravity Gs of the soil particles is 2.70. Please determine the wet density, dry density, saturated density, moisture content, void ratio, porosity and saturation.An in-situ density test on a 542.5 cm^3 soil sample was conducted. The total weight of the sample at the site was 801.3 grams. Soil samples of the test were collected and moisture content was determined to be 4.5%. Assuming Gs = 2.71 determine: