A proctor compaction test has been performed on a soil that has Gs = 2.70. The test results were asfollows:TestMass of the compactedMoisture content Test ResultsNo.moist soil + MoldMass of canMass of canMass of can(kg)(g)and moist soiland dry soil(g)205.74194.20(3)196.3313.67322.1223.7983.92723.8419.75180.54177.92165.713196.2443.98320.04187.4353.93221.98199.59171.11Mass of the mold = 1.95 kgVolume of the Mold = 0.000944 m³a) Determine the maximum dry unit weight in KN/mb) Determine the optimum moisture contentc) Determine the degree of saturation at optimum moisture contentd) Determine the percentage compaction if the in-situ dry unit weight is 17.9 KN/m³

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Answered: A proctor compaction test has been…

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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Q.48 In a standard proctor test, 1.8 kg of moist soil was filling the mould (volume = 0.944 cc) after compaction. A soil sample weighing 23 g was taken from the mould and oven dried for 24 hours at a temperature of 110 °C. Weight of the dry sample was found to be 20 g. Specific gravity of soil solids is G = 2.7. The theoretical maximum value of the dry unit weight of the soil at that water content is equal to
Problem 4: A balloon-type apparatus is used to determine an in-place unit weight for a soil (field density test). The volume of the test hole is 0.000708 cu.m. The weight of the soil obtained from the test hole is 1410 g. The soil sample was dried on a field stone and weighs 1235 g. 1. Compute the water content of the tested soil. 2. Compute the in-place dry unit weight of the tested soil. 3. Determine the $ of compaction for the test result if the soil is part of a compacted carth fill whose maximum unit weight (from laboratory compaction tests) is 18.67 KN/m³.
The Following results were obtained From a standard Compaction test on a Soil: Soil Mechanics The volume of Gs 2.7 Buls uint wight (ksu/m) 20.4 21, 28 21. 63 21.44 20.18 2o.48 11.2 12.9 14 16.3 18.8 20.5 Water content (%) * plot the dry density/water content curve and give the optimum miosture content and maximum dry densityof the soil oiw M p lot the Lines of Zero 5 % and 10% air Voids, Lines 不

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A Standard Proctor test was performed on a clayey gravel soil; the test results are shown below. Find the degree of saturation at the optimum condition; assume that G; = 3.60. Test 1 2 3 4 5 6. 7 w% 3.00 4.45 5.85 6.95 8.05 9.46 9.90 1.94 2.01 2.06 2.09 2.08 2.06 2.05 ya kN/m? 19.4 20.1 20.6 20.9 20.8 20.6 20.5 Use Yw = 10 kN/m° for simplicity.
Question 1 (a) Based on your understanding, briefly elaborate the different between residual soil and transported soil. (b) An undisturbed cylindrical soil sample is 0.060 m in diameter and 0.155 m long. It has a total mass of 0.82 kg. The specific gravity of the soil is 2.7. After finding the mass of the entire sample, a small portion was removed and a moisture content test was performed on the sample. The results of this moisture content test on the subsample were mass of moist soil = 102.96 g and mass of dry soil = 90.71 g. Determine the following: Moisture content i. Wet unit weight Void ratio ii. ii. (c) A series of laboratory compaction test performed using the Standard Proctor Test procedure, the moisture content tests were further performed by taking out small portions of compacted soil and the result obtained are as shown in Table Q1 (c): Table Q1 (c) Volume of Proctor Mass of compacted Mass wet soil sample (g) Mass dry soil sample mold (m) soil (g) (g) 0.00095 1704 183.64…
1. The results of a standard Proctor test are given in Table Q1 below. Determine the maximum dry density of soil compaction and the optimum moisture content. Table Q1 Volume of Proctor Mass of wet soil in the mold Moisture content mold (cm³) (kg) 3.39 (%) 11.5 987 987 3.87 13.5 987 4.22 15.5 987 5.11 17.5 987 4.75 19.5 987 4.31 21.5
The following results were recorded during a Falling head permeability test: Sample diameter = 120 mm Sample length = 140 mm Initial head = 510 mm Final head = 310 mm Standpipe diameter = 6 mm Duration of flow = 3.4 mins Determine the coefficient of permeability for the soil in m/s. Based on the coefficient of permeability estimate the soil type
The following data were obtained from sand-cone experiment where a volume of a certain soil is replaced with a sand in order to find the density of the soil. Density of sand used in test = 1.3 g/cc Wt. Of soil excavated from the pit = 925 g Wt. of sand filling the pit = 675 g Water content of natural soil = 15% Specific gravity of Solid = 2.7 a) Determine the wet density of the soil in g/cc. b) Determine the dry density of the soil in g/cc. c) What is the porosity of the soil?

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