3. A saturated sample of undisturbed clay has a volume of 19.2 cm³ and weighs 32.5 g. After oven drying, the weight reduces to 20.2 g. Determine the following: (a) water content, (b) specific gravity, (c) void ratio and (d) saturated density of the clay sample. Specific gravity Water Content saturated density of the clay sample Void ratio - Select - - Select - - Select - - Select -

3. A saturated sample of undisturbed clay has a volume of 19.2 cm³ and weighs 32.5 g. After oven drying, the weight reduces to 20.2 g. Determine the following: (a) water content, (b) specific gravity, (c) void ratio and (d) saturated density of the clay sample. Specific gravity Water Content saturated density of the clay sample Void ratio - Select - - Select - - Select - - Select -

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter11: Compressibility Of Soil

Section: Chapter Questions

Problem 11.12P

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4.15 The following results were obtained from a liquid limit test on a clay using the Casagrande cup device. Number of blows 6 12 20 28 32 Water content (%) 52.5 47.1 43.2 38.6 37.0 (а) Determine the liquid limit of this clay. (b) If the natural water content is 38% and the plastic limit is 23%, calculate the liquidity index. (c) Do you expect a brittle type of failure for this soil? Justify your answer.
A sample of sand has a relative density of 40% witha solid specific gravity of 2.65. The minimum voidratio is 0.45 and the max. void ratio is 0.97.a) Determine the void ratio of the sand at arelative density of 40%.b) What is the density of this sand in asaturated condition?c) If the sand is compacted to a relativedensity of 65%, what will be the decrease inthickness of a 4 ft. thick layer.
ANSWER MUST BE: (a) t50 = 8.37 years, (b) t90 = 35.96 years, (c) U ≈ 17%, (d) U ≈ 39% A clay specimen was tested in a laboratory consolidation device, whichwas 12.7 mm (½ in.) thick and the top and the bottom boundaries weredrained. A 50% consolidation time on the specimen was obtained as28.4 minutes. Determine the following:(a) Time for 50% consolidation in the field with this soil with a 2.5 mthickness where only the top layer is drained (b) Time for 90% consolidation in the field with this soil with a 2.5 mthickness where only the top layer is drained (c) For the same field condition above, at the end of 1 year after theplacement of load, how much primary consolidation settlementoccurs relative to its final amount of the settlement? (d) The same question as in (c), but at the end of 5 years
d) A sample of silty clay has a mass of 126 g. Laboratory tests results give a bulk density (p») of 2.05 g/em', a specific gravity of solids (G.) of 2.71, and a moisture content (w) of 15.7%. Determine all the phase distributions and use the values to calculate the following: i) void ratio (e), ii) porosity (n), ii) degree of saturation (S), iv) dry density (pa), v) dry unit weight (ya), and vi) bulk unit weight (yhwlk)
During Atterberg limit tessts in the Naboratory,the studens obtained the following results froma clayey soil. Wumber of Blows (N) Molsture Content \ 38/4 16 36/5 20 33.1 28 2/7 0 Plastic limit tests: Students conducted two trials and found that PL= 17 2% for the first trial and PL = 18.4% for the second trial. Assume that the liquid limit of the soil iS LL= 29.0% a. Determine the flow index. b. Determine the liquidity index of the soil if the in situ moisture content is 22.0%.
A sand is comprised of solid constituents that have a density (ps) of 2.68 Mg/m³. The void ratio, e, of the specimen is 0.58. Compute the following: (a) pa; (b) density when saturated, psat, and (c) relative density, Dr, using additional information that this soil has a maximum void ratio, emax, of 0.85 and a minimum void ratio, emin, of 0.43. (include your phase diagram(s)) (a) kg/m³ (b) kg/m³ (c)
The following results were obtained by testing a sample of clay: water content 25.6%, liquid limit 43.5%, plastic limit 19.1%. From this compute the following: (a) Liquidity Index (b) Plasticity Index (c) Shrinkage Limit
During the shearing phase of a CU test, the void ratio of a NC consolidated clay specimen will: 1decrease. 2could increase or decrease. 3remain a constant. 4increase.
The dry unit weight of a sand sample in the loosest state is 13.34 kN and in the densest state, it is 21.19 kN. Its grain specific gravity is 270 and has a porosity of 33% P.S. Sorry for the question can’t fully grasp what was written
The coefficient of permeability of fine sand is 0.012 cm/sec at a voids ratio of 0.57. Estimate the increased permeability using the Kozeny-Carman formula of this same sand when its voids ratio has increased to 0.72.
What do you mean by clay sensitivity and what are the different range of claysensitivity?
3- A sand sample is subjected to drainage cutting test with a hollow cylinder device. Rupture occurs with increasing internal pressure while external pressure is constant. At the moment of rupture, the external stress is 200 kPa and the internal stress is 300| Kilopascals - be. Internal and external radii of the sample are 40 and 60 mm. A) Obtain the angle of soil friction. B) At the moment of rupture, what is the axial stress applied to the sample?