A field compaction of the sandy loam was found to have a wet density of 2179kg/m3 at a water content of 10 percent. The maximum dry density of the soil obtained in astandard proctor test was 2000 kg/m3. Assuming Gs = 2.7, compute:a) Dry unit weight of the in-situ soilb) Dry unit weight at zero air voidsc) Degree of saturation of the in-situ soild) Porositye) Percent compaction on the field

Given data- Wet density (£w) = 2179kg/m³ Water content(W) =10% = 0.10 Dry density (£d) = 2000kg/m³…

Answered: A field compaction of the sandy loam…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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An undisturbed sample of soil obtained from field weighed 18 N with a volume of 10-3 m3. The dry unit weight of the undisturbed sample is 13 kN/m3. Assume specific gravity of the soil sample as 2.70. Then, Water content of the soil sample is 38.5%. Correct Option B The void ratio of the soil sample is 0.382. C The saturated unit weight of the sample is 20.23 kN/m3. D The saturated unit weight of the sample is 18 kN/m³. Correct Option
The laboratory compaction test of a certain type of soil gives a maximum dry density of 1.486 g/cm3 with an optimum moisture content of 12.5%. The following are the results of a field unit weight determination test using sand cone method. Volume of the soil excavated from the hole = 0.001337 m3 Weight of soil from the hole when wet = 2220 g Weight of soil when dry = 1890 g What is the in situ water content of the soil? O 17.46% O 19.21% O 15.55% O 14.12%
From a standard Proctor laboratory sample of soil Gs= 2.70; maximum dry unit weight = 16.4 kN/m3; Optimum moisture content= 18%; Moisture content of soil at the borrow site+ 28%. Specification require that compaction of soil must be at least 95% of the maximum obtained from the proctor test. Compute the maximum compaction expected from the compacted soil using the zero air boids curve for this soil with the following moisture contents: w1= 20%; w2= 25%; w3= 30%. O a. 94.71% O b. 96.54% O c. 92.07% O d. 90.12%
EX.2 A partially saturated soil has a volume of (6x10 m') and weight of (0.902N). The sample is dried in an oven and its dried weight is (0.724N), if specific gravity is (2.6), find degree of saturation.
Sand is used in the cone is known to have a bulk density of 15.74 kN/m3 Wet weight=20.601 N Dry weight =17.926 N Weight of sand to fill test hole =16.053 N a) Determine the in-place dry density of the tested soil (Ans. 17.57 kN/m3) b) Determine the water content (Ans. 15%) c) Compute the percentage of compaction of the tested soil if the laboratory moisture density curve indicates a dry density of 18.1 kN/m3 and an optimum moisture content of 13%. (Ans. 97.07%)
The compacted soil sample has 250 g mass and 1.89 g/cm³ density using 12% water content. If the specific gravity of the soil is 2,74 and density of water is 1 g/cm³, the degree of saturation is approximately
PROBLEM 13: A soil sample has a maximum dry unit weight of 125 Ib/ft?. If the sample has wet unit weight of 135 Ib/ft?, Gs =2.65, moisture content w =11%. Compute the percent compaction in the field a. 97.3% C. 89.67% b. 94.13% d. 93.23%
An in-situ (subgrade) soil located in Colorado (TMI = -20) has the following index properties: Percent passing No.200 = 25 percent Plasticity Index = 20 Compaction tests indicate this soil has an optimum degree of saturation of 85 and a maximum dry unit weight of 100 PCF. The resilient modulus at optimum conditions is 10,000 psi. Estimate the resilient modulus at equilibrium with the environment for this soil. Clearly outline the steps followed and assumptions used to find the answer.
A field sand cone test is performed on a layer of compacted fill. determined that the fill soil has a maximum dry unit weight of approximately 120 pcf. Determine the relative compaction of the compacted fill. Unit weight of dry uniform of sand: 95 pcf Weight of sand to fill the cone: 1.10 lb weight of jar + cone + sand (before test): 16.5 lb Weight of jar + cone + sand (after test): 10.5 lb Weight of moist soil excavated from hole: 6.60 lb Moisture content of soil from hole: 10 %
Situation 2: A sample of moist soil was found to have the following characteristics: Volume 0.01456 m3 (as sampled) Mass 25.74 Kg (as sampled) 22.10 Kg (after oven drying) Specific gravity of solids: 2.69 a. Find the density b. dry unit weight c. void ratio d. porosity e. degree of saturation for the soil f. What would be the moist unit weight when the degree of saturation is 80%?
A granular soil sample taken from the field has a density of 1900 kg/m3. In a laboratory test, it was found out that the density of the soil solids is 2600 kg/m3, moisture content of 11.5% and void ratios at its densest and loosest states are 0.43 and 0.62, respectively. Determine the following: 1. In-situ dry density of the soil, kg/m3. 2. In-situ void ratio. 3. Relative density, %.

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