MEC 316: Bài tập chương 1

• Đăng bởi: nguyenphuocbinh
• Sinh viên
• 18/04/2019

1.1

The moist weight of 2,83.10³ m3 of soil is 55,5.10³ kN/m³. If the moisture content is 14% and the specific gravity of soil solids is 2.71, determine the following:

1. Moist unit weight
2. Dry unit weight
3. Void ratio
4. Porosity
5. Degree of saturation
6. Volume occupied by water

1.2

The moist unit weight of a soil is 19,2 kN/m³. Given that G = 2,69 and w = 9.8%, determine:

1. Void ratio
2. Dry unit weight
3. Degree of saturation

1.3

Refer to Problem 1.2. Determine the weight of water, in kN, to be added per cubic meter (m³) of soil for

1. 90% degree of saturation
2. 100% degree of saturation

1.4

Undisturbed soil sample was collected from the field in steel Shelby tubes for laboratory evaluation. The tube sample has a diameter of 71 mm, length of 558 mm, and a moist weight of 42,5.10^-3kN. If the oven-dried weight was 37,85.10^-3kN, and Gs= 2.69, calculate the following:

1. Moist unit weight
2. Field moisture content
3. Dry unit weight
4. Void ratio
5. Degree of saturation

1.5

When the moisture content of a soil is 26%, the degree of saturation is 72%, andthe moist unit weight is 16.98 kN/m³. Determine:

1. Specific gravity of soil solids
2. Void ratio
3. Saturated unit weight

1.6

For a given soil, the following are known: G=2,74, moist unit weight, g = 20.6 kN/m³, and moisture content, w=16.6%. Determine:

1. Dry unit weight
2. Void ratio
3. Porosity
4. Degree of saturation

1.7

Refer to Problem 1.6. Determine the weight of water, in kN, to be added per cubic meter (m³) of soil for

1. 90% degree of saturation
2. 100% degree of saturation

1.8

The moist density of a soil is 1750 kg/m³. Given w=23% and Gs=2,73, determine:

1. Dry density
2. Porosity
3. Degree of saturation
4. Mass of water, in kg/m³, to be added to reach full saturation.

1.9

For a moist soil, given the following: V= 7,08.10^-3m; ; W=136,8. 10kN;w=9.8%; Gs=2,66. Determine:

1. Dry unit weight
2. Void ratio
3. Volume occupied by water

1.10

For a given soil, r_d=2180 kg/m³ and n = 0.3. Determine:

1. Void ratio
2. Specific gravity of soil solids