Q1. Grain-size distribution of a soil obtained using sieve shaking and hydrometer test gave the following results: Particle Size (mm) 4.75 Percent Finer (%) 2.00 0.425 0.075 88 61 35 9. The Coefficient of Uniformity Cy and the Coefficient of Curvature Cz of the soil were estimated to be 4.8 and 2.1, respectively. Atterberg limits tests on the fines portion of this soil gave the following results: Liquid Limit organic material. Classify this soil using the Unified Soil Classification System (USCS). Provide both the alphabetical code as well as the description of the soil as your final answer. 70%; Plastic Limit = 25%. The soil was found to contain no

Q1. Grain-size distribution of a soil obtained using sieve shaking and hydrometer test gave the following results: Particle Size (mm) 4.75 Percent Finer (%) 2.00 0.425 0.075 88 61 35 9. The Coefficient of Uniformity Cy and the Coefficient of Curvature Cz of the soil were estimated to be 4.8 and 2.1, respectively. Atterberg limits tests on the fines portion of this soil gave the following results: Liquid Limit organic material. Classify this soil using the Unified Soil Classification System (USCS). Provide both the alphabetical code as well as the description of the soil as your final answer. 70%; Plastic Limit = 25%. The soil was found to contain no

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.6P: Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the...

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c. Recall that the natural moisture of the soil is 36.4%. Consider that the following propertieswere also measured using the relevant experimental procedures on representative(saturated) samples of the soil deposit at a depth of 3 m: Specific gravity, Gs = 2.62Unit weight of water, gw = 9.81 kN/m3 Draw a phase diagram and estimate the void ratio and the bulk density of the soil. Whatcan you comment in relation to the density of the soils and its expected compressibility?How would you expect these to vary with depth?
As a result of sieve analysis and hydrometer analysis on a soil sample, gravel 40% and sand 18%. Liquid limit value of the soil 58% and plasticity index was determined as 32%. D60, D30 and D10 values according to grain distribution curve 2.4mm, 0.9mm and 0.2mm respectively. According to the findings obtained, the soil sample Make USCS classification.
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 in place unit test was conducted on the field during the construction of a proposed embankment. The following data were obtained. moisture content=12.8% weight of sand to fill the funnel=320 g weight of wet soil from test hole=750 g unit weight of sand=15.4 kN/m3 weight of sand used to fill test hole and funnel of sand-cone device=870 g a) compute the wet unit weight of soil (Ans. 21.14 kN/m3) b) compute the dry unit weight of the compacted soil (Ans. 18.74 kN/m3) c) compute the relative compaction in the field if the maximum dry unit weight of the soil is 21.3 kN/m3. (Ans. 87.98%)
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.
A soil sample has the following properties: Sp.gr. = 2.67, Void ratio = 0.54, Water content = 11.2%. Compute the air void ratio.
Subject: Soil Mechanics Please provide a solution and diagram An undisturbed soil sample, 100 mm in diameter and 200 mm high, was tested in a triaxial machine. The sample failed at an additional axial load of 3 kN with a vertical deformation of 20 mm. The failure plane was inclined at 50° to the horizontal and the cell pressure was 300 kN/m2, Determine, from Mohr’s circle, the cohesion in kPa. a. 125.6 b. 117.8 c. 91.3 d. 87.2
The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.
Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the shrinkage limit of the soil as shown in Figure 4.22. 4.5 The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.
Following results are obtained for a liquid limit test using a fall cone device. Estimate the liquid limit of the soil and the flow index.
The properties of seven different clayey soils are shown below (Skempton and Northey, 1952). Investigate the relationship between the strength and plasticity characteristics by performing the following tasks: a. Estimate the plasticity index for each soil using Skemptons definition of activity [Eq. (4.28)]. b. Estimate the probable mineral composition of the clay soils based on PI and A (use Table 4.3) c. Sensitivity (St) refers to the loss of strength when the soil is remolded or disturbed. It is defined as the ratio of the undisturbed strength (f-undisturbed) to the remolded strength (f-remolded)) at the same moisture content [Eq. (12.49)]. From the given data, estimate f-remolded for the clay soils. d. Plot the variations of undisturbed and remolded shear strengths with the activity, A, and explain the observed behavior.
PLS. ANSWER ASAP WITH COMPLETE SOLUTION4 DECIMAL PLACES A saturated sample of clay with a shrinkage limit of 22 has a natural water content of 35%.a. What would its dry volume be as a percentage of its original volume if the specific gravity of soil solids is 2.70?b. What would be the void ratio of the soil in its natural water content?c. What is the dry density of the soil sample?