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

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

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.9P

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Question

solve completely from A to E. Thank you

FINAL ANSWER:

A. ? (USE EXCEL)

B. ?

C. e = 0.488, and S = 76.9%,

D. γt = 20.27 kN/m3,

E. w = 10.7% to 16.0%

The modified Proctor test (ASTM D 698, method C) was performed for
a soil with G, = 2.70, and the results are as follows:
5.5
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
Plot the Y 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 wopt?
What is the range of water content if the relative compaction (R.C.)
is required to be 95% of the modified Proctor Ya,max?

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