Geo HW #2

Geo HW #2 - Dan Aiello Geo Eng HW#2 Question 5(HW 1 A...

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Dan Aiello Geo. Eng. HW #2 Question 5(HW 1) A laboratory test is made by adding sufficient water to a sample of remolded clayey soil to bring its consistency above the liquid limit water content. The wet soil is placed in a stainless steel container with an inside volume of 100 cc. the sample of the soil is dried at 105°C. to a constant temperature. The weight of the sample before drying (solids plus water) is 185 g. After drying, it weighs 135 g and its measured volume is 67 cc. The specific gravity of the soil solids was determined in a separate test to be Gs= 2.70. (a) What is the shrinkage limit for this soil? (b) If the liquid limit is determined to be 36 percent and the plastic limit is determined to be 17 percent, how much volume change, in percent, would one volume unit (liter, cubic foot) change if the water content changes from the liquid limit to the plastic limit? a) b) Question 1 How would you determine if a soil was a silty sand or a sandy silt if: a. Laboratory test equipment was available? b. Laboratory test equipment was not available? a) If testing equipment was available I would run a particle size analysis test to see the percentages of the soil that passed certain sieves and use the proper classification system to determine if it was silty sand or sandy silt. b) If testing equipment was not available you could look for silt properties in the soil and determine if the soil primary quality is more sand or silt like. Question 2
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Geo HW #2 - Dan Aiello Geo Eng HW#2 Question 5(HW 1 A...

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