(b)Table Q2(b)(i) shows the proctor compaction test results of bulk density andpercentage of water content conducted in geotechnic laboratory. The test isperformed on a subgrade soil sample with the specific gravity of solid is2.75. Based on the statement;(i)With the plot of graph, compute the maximum dry density andoptimum moisture content.(ii)Compute the range percentage of moisture content needed to achieve95% of relative compaction effort. Table Q2(b)(i): Result of bulk density and water content from proctor compaction testBulk densityWater content(kg/m?)( % )18359.1193011.8200814204316.5200818.9

Answered: Image /qna-images/answer/0a8264cb-5837-4161-865b-3284c5a6943c.jpg

Answered: Table Q2(b)(i): Result of bulk density…

Table Q2(b)(i): Result of bulk density and water content from proctor compaction test Bulk density Water content (kg/m?) ( % ) 1835 9.1 1930 11.8 2008 14 2043 16.5 2008 18.9

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Compaction

Section: Chapter Questions

Problem 5.16P

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Concept explainers

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.

Question

(b)
Table Q2(b)(i) shows the proctor compaction test results of bulk density and
percentage of water content conducted in geotechnic laboratory. The test is
performed on a subgrade soil sample with the specific gravity of solid is
2.75. Based on the statement;
(i)
With the plot of graph, compute the maximum dry density and
optimum moisture content.
(ii)
Compute the range percentage of moisture content needed to achieve
95% of relative compaction effort.

Table Q2(b)(i): Result of bulk density and water content from proctor compaction test
Bulk density
Water content
(kg/m?)
( % )
1835
9.1
1930
11.8
2008
14
2043
16.5
2008
18.9

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