Why is relative density only useful on coarse or granular soil?

Solutions

Expert Solution

The relative density is used only for coarse grained and not fine grained soil is due to the following reasons:

1.Engineering properties such as strength and compressibility of coarse-grained soil are governed by the grain-size of the particles and their structural arrangement whereas Engineering properties of fine grained soil are controlled by mineralogical factors and moisture content.Here, in case of relative density we seek to measure the structural arrangement of the soil.

2. The coarse grained soil shear strength depends on the values whereas those for fine grained soil depends upon the Cohesion values. The Relative density is correlated to the values and not to the Cohesion values.

Relative density(%) Angle of shearing resistance(degrees)

0-15

15-35 28-30

35-65 30-36

65-85 36-41

85-100

Ally Wells answered 1 year ago

Next > < Previous

Related Solutions

Explain unified classification of coarse-grained soil?

What is Coarse soil and what are its classifications?

A Sample of coarse grained soil tested in the laboratory. The gradation analysis results are as...

A Sample of coarse grained soil tested in the laboratory. The gradation analysis results are as shown in the table below. Sieve Size (mm) Mass retained on each sieve (g) 4.75 0 2.00 40 0.850 60 0.425 89 0.250 140 0.180 122 0.150 210 0.075 56 Pan 12 Classify the soil according to Unified Soil Classification System (USCS)

For a granular soil deposit, γ = 108.8 lb/ft3, w = 8%, Gs = 2.65. a)...

For a granular soil deposit, γ = 108.8 lb/ft3, w = 8%, Gs = 2.65. a) Determine the void ratio, e, for this soil. b) For this soil, it is determined that Dr = 70%. If emin = 0.57, what is emax for this soil? c) What would be the dry unit weight of this soil in its loosest state? d) What would be the dry unit weight of this soil in its densest state?

Problem of soil-physics What are the differences in determining the storage density of the soil and...

Problem of soil-physics What are the differences in determining the storage density of the soil and its solid substance density? Why is the storage density of dry soil samples determined? Please answer as text, more than three A4 papers with introduction, main part and conclusion

Why is being able to measure density precisely a useful tool in Biology? - In your...

Why is being able to measure density precisely a useful tool in Biology? - In your first paragraph describe how you could measure viral or bacterial density . - In the following paragraph, describe why it is useful to measure bacterial or viral density accurately and precisely . - Finally, how does measuring density precisely and accurately help your inference about the relation between density and diversity of the COVID-19 virus for example? . (In this case. Does it refer...

Coarse grained soils behave differently than fine grained soils. What is the primary soil property responsible...

Coarse grained soils behave differently than fine grained soils. What is the primary soil property responsible for the different engineering behavior of coarse versus fine grained soils, and why is it important?

Why do farmers need to regularly test the soil nutrients instead of only once before they...

Why do farmers need to regularly test the soil nutrients instead of only once before they start planting their seeds?

a) The soil from a borrow pit is at a total density of 1.8 t/m3 and...

a) The soil from a borrow pit is at a total density of 1.8 t/m3 and a water content of 12%. It is desired to construct a road subgrade with a compacted total density of 2 t/m3 at a water content of 17%. Determine the quantity of soil (dry mass in tonnes) to be excavated from the barrow pit and the amount of water (in litres) to be added for every 1 m3 of compacted soil in the embankment. (Assume...

Describe the effect of low pH and high soil density on root growth and function

Subjects