PROBLEM 1 The results of a standard Proctor test are given in the following table. Mass of moist Moisture soil in the mold (kg) Trial Content (%) 1 1.47 10.0 2 1.83 12.5 3 2.02 15 4 1.95 17.5 1.73 20.0 1.69 22.5 After compaction the field unit weight of the soil is determined by means of the sand cone method, the following are the results: Calibrated dry density of Ottawa sand = 1731 kg/m3 Mass of Ottawa sand to fill the cone = 0.118 kg Mass of jar + cone + sand (before use) = 6.08 kg Mass of jar + cone + sand (after use) = 2.86 kg Mass of moist soil from the hole 3.34 kg Moisture content of moist soil = 12.1% %3D Determine the maximum dry unit weight (kN/m3) of compaction and the optimum moisture content. Given mold volume = 943.3 cm3. Note: Check the maximum а. %3D dry unit weight of compaction and the optimum moisture content using the graphical method and by means of the equation of the line. b. Determine the relative compaction in the field.
PROBLEM 1 The results of a standard Proctor test are given in the following table. Mass of moist Moisture soil in the mold (kg) Trial Content (%) 1 1.47 10.0 2 1.83 12.5 3 2.02 15 4 1.95 17.5 1.73 20.0 1.69 22.5 After compaction the field unit weight of the soil is determined by means of the sand cone method, the following are the results: Calibrated dry density of Ottawa sand = 1731 kg/m3 Mass of Ottawa sand to fill the cone = 0.118 kg Mass of jar + cone + sand (before use) = 6.08 kg Mass of jar + cone + sand (after use) = 2.86 kg Mass of moist soil from the hole 3.34 kg Moisture content of moist soil = 12.1% %3D Determine the maximum dry unit weight (kN/m3) of compaction and the optimum moisture content. Given mold volume = 943.3 cm3. Note: Check the maximum а. %3D dry unit weight of compaction and the optimum moisture content using the graphical method and by means of the equation of the line. b. Determine the relative compaction in the field.
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter2: Origin Of Soil And Grain Size
Section: Chapter Questions
Problem 2.2CTP: Refer to Problem 2.C.1. Results of the sieve analysis for Soils A, B, and C are given below. To...
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