5. Follow ing is the result of a modified proctor test. Determine the maximum dry unit weight, void ratio and saturation at optimum moisture c energy of compaction. Make a tabulation of all your results. Volume of Mold (m³) Weight of Moise Soil in Mold (kN) OF Moisture Content 0.000945 10 0.000945 12 0.000945 14 0.000945 16 0.000945 18 0.000945 20 COR

5. Follow ing is the result of a modified proctor test. Determine the maximum dry unit weight, void ratio and saturation at optimum moisture c energy of compaction. Make a tabulation of all your results. Volume of Mold (m³) Weight of Moise Soil in Mold (kN) OF Moisture Content 0.000945 10 0.000945 12 0.000945 14 0.000945 16 0.000945 18 0.000945 20 COR

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 5.7P

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Concept explainers

Soil Compaction Test

Soil compaction is the major area of geotechnical engineering. Soil is composed of multiple pores present on its surface, while the soil is mainly composed of gravel, sand, rocks, etc. The arrangement of these rocks and gravels is such that they build up voids (spaces) between them, which allows spaces for the roots of the plants and crops to spread and absorb the required amount of nutrients. Soil compaction is a major problem primarily caused by human activities, micro-organisms, and other multiple factors.

Question

5. Following is the result of a modified proctor test. Determine the maximum dry unit weight, void ratio and saturation at optimum moisture content and
energy of compaction. Make a tabulation of all your results.
Volume of Mold (m³)
Weight of Moise Soil in Mold (kN)
OF
Moisture Content
0.000945
10
0.000945
12
0.000945
14
0.000945
0.0177
16
0.000945
0.0173
18
0.000945
0.0166
20
COR

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2. The resulting of the Standard Proctor Test is as follows: Vol. of Proctor Mold Wt. of wet soil in mold Moisture (cu.m) (kg) (%) 943.3 1.76 12 943.3 1.86 14 943.3 1.92 16 943.3 1.95 18 943.3 1.93 20 943.3 1.90 22 a. Determine the maximum dry unit weight of compaction b. Determine the optimum moisture content
The resulting of the Standard Proctor Test is as follows: Vol. of Proctor Mold (cu.m) Wt. of wet soil in mold (kg) Moisture (%) 943.3 1.76 12 943.3 1.86 14 943.3 1.92 16 943.3 1.95 18 943.3 1.93 20 943.3 1.90 22 a. Determine the maximum dry unit weight of compaction b. Determine the optimum moisture content
The results of a standard Proctor test are given in the following table. Determine the maximum dry unit weight of compaction and the optimum moisture content. Also determine the moisture content required to achieve 95% of γd(max). Calculate and plot the 80% and 100% saturation lines.
Following the sieve analysis and the specific gravity of "SAND 1", a hydrometer test was performed on the soil that passed the #40 sieve, and the following data was collected: Material SAND 1 Time min 2 UN 5 8 12 15 30 45 60 1440 hydrometer reading R 16.5 16 15.9 15.8 15.6 15.4 15.3 15.2 14.2 (Hint: Use the specific gravity and temperature from the Specific gravity test of SAND 1) 3-a) Briefly describe the test procedure and discuss its applications in practice 3-b) Percentage of fines (less than 0.075 mm) [Hint: from the sieve analysis data] =--% 3-c) Percentage of silt (less than 0.075 mm and greater than 0.002 mm) = --% [Hint: from sieve analysis and hydrometer test] 3-d) Percentage of clay (less than 0.002 mm) =--%
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The modified Proctor test (ASTM D 698, method C) was performed for a soil with G, = 2.70, and the results are as follows: Moist Weight in Mold, gf Water Content, % 6.5 3250 9.3 3826 12.6 4293 14.9 4362 17.2 4035 18.6 3685 (a) Plot the Ya versus w relation. (b) Determine Ya.max and wopt• (c) Calculate S and e at the maximum dry unit weight point. (d) What is Y at w. (e) What is the range of water content if the relative compaction (R.C.) is required to be 95% of the modified Proctor Ya.max? pt? opr?
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