3. If the specific gravity of the soil subjected to compaction is 2.70, a. Plot the compaction curve of the given data in the table below. 4.2 Water content (%) 5.1 7.8 Degree of Saturation, S (%) 28.9 60.1 b. Determine the maximum dry unit weight and optimum water content. 19.8 10.1 69.8 12.2 74.6

A proctor compaction test was conducted on a soil sample, and the following observations weremade:Water content, percent 7.7 11.5 14.6 17.5 19.7 21.2Mass of wet soil, g 1739 1919 2081 2033 1986 1948   1. determine the wet density in g/cm32. determine the dry density in g/cm33. determine the dry unit weight in kN/m34. construct the compaction curve 5. determine the optimum moisture content in percent 6. determine the maximum dry density in kN/m37. construct the 80% and 100% saturation lines using w% = 8, 12, 16, 20, and 24 8. calculate the saturation for the maximum dry density (ϒdmax in kN/m3) and the optimummoisture content (wopt %)

13. A soil has a specific gravity of solids (Gs) of 2.65, a water content of 13% and a void ratio of 0.8. a. draw the phase diagram and fill it in with the numerical values b. determine the porosity, saturation, and the dry, saturated, and submerged unit weights in lb/ft³. using Gs= Ms me

For a soil, given e= 0.75, w= 22%, Gs= 2.66, calculate the dry density of soil in slug/ft3. Note p of water= 1.94 slug/ft3 a. 2.85 b. 3.6 c. 2.95 d. 3.8

ASAP (Subject: Soil Mechanics)

1. Draw the compaction curve using the following given data from a standard Proctor test.  2. From the compaction curve you drawn, determine the Optimum Moisture Content and the Maximum Dry Unit Weight.

Soil Compaction Homework: the results of standard compaction test are shown in the table below. Determine the maximum dry unit weight and the optimum moisture content. W% 6.2 8.1 9.8 11.5 12.3 13.2 ybkN/m³ 18.7 20.4 16.9 19.5 20.5 20.1 а. What is the dry unit weight and w at 95% standard compaction? b. Determine the degree of saturation at the maximum yd , Gs = 2.7? С. Plot the zero air voids line?

Results from a liquid limit test conducted on a soil are given below. Number of blows, N 12 19 27 37 Moisture content (%) 35.2 29.5 25.4 21 a. Determine the LL of the soil. b. If it is known that the PI = 6.5, what would be the plastic limit of the soil? c. Determine the liquidity index of the soil if win situ = 23.8% d. Using the plasticity chart, determine the type of the soil and estimate the shrinkage limit.

Homework Chapter 3 31 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 14 38.4 16 36.5 20 33.1 28 27.0 If the plastic limit is PL = 13.4% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 29%, P.L = 15.6 3.2 Determine the liquidity index of the soil in Problem (1) if wWin situ = 32%. Ans.: L.I = 1.19% 3.3 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 13 18 27 22 If the plastic limit is PL = 19.1% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 23.6%, P.L = 4.5% 3.4 Determine the liquidity index of the soil in Problem (3) if win situ = 21% Ans.: L.I = 0.422% 3.5 A saturated soil used to determine the shrinkage limit has initial volume Vi = 20.2 cm3, final volume Vf = 14.3 cm3, the mass of wet soil M1 = 34 g, and mass of dry soil M2 =…

Results from a liquid limit test conducted on a soil are given below. Number of blows, N 12 19 27 37 Moisture content (%) 35.2 29.5 25.4 21 a. Determine the liquid limit of the soil. b. If it is known that the PI = 6.5, what would be the plastic limit of the soil? C. Determine the liquidity index of the soil if w = 23.8% in situ