Assignment 2

Assignment 2 - 2. Due to the diameters of the particles...

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Tarun Rampersad Assignment 2 25/01/2010 20265813 CIVE 375 1. Cohesive soils refer to clay-like soils and cohesionless refers to very bulky soils such as  cobble. The main difference between these two types of soils is the diameter size of the  particle. The bulkier the particles, the more voids there are in between each particle, and  vice versa for more compact particles. Different amounts of voids within the soil results in  different compressibility, strength, and permeability. The higher the void ratio is (volume of  voids over volume of soil solids) the lower the strength is and the more compressible and  permeable it is, as found in the cohesionless soils that are very loose. The lower the void  ratio is, the higher the strength is and the more incompressible and impermeable it is, as  found in cohesive soils that are very dense. 
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Unformatted text preview: 2. Due to the diameters of the particles found in the soil, clay is considered to be cohesive and silts are cohesionless. The plastic limit occurs when the moisture content increases. Because silts are cohesionless, they are more permeable than clay which is cohesive. This means that clay can hold more moisture than silt, allowing it to reach the plastic limit due to its higher moisture content over silt, making silt a semi-solid. Silt is also non-plastic because its liquid limit is the same as its plastic limit, making its plastic index zero. 3. 4. 5. 1 Tarun Rampersad Assignment 2 25/01/2010 20265813 CIVE 375 a. From the data given, the following plot was made on Excel using the equation in the plot and substituting 25 into x, the Liquid Limit was found to be 73.824 2...
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Assignment 2 - 2. Due to the diameters of the particles...

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