A standard Proctor test was performed on a soil which has a G = 2.75. The moisture content and total density results are shown in the table below. Wet unit weight (KN/m³) Moisture Content 12% 18.1 14% 19.3 16% 20.7 18% 21.0 20% 18.2 a. Calculate the dry unit weight for each sample and type your answers in the first 5 answer boxes below (3 sigs, in KN/m3). b. Calculate the dry unit weight at zero air void for the 12% and 14% moisture content samples and type those answers in boxes 6 and 7 below(3 sigs, in KN/m3). . c. Plot the moisture content-dry unit weight curve and zero air void line on graph paper. d. From the moisture content-dry density curve, determine the maximum dry unit weight(3 sigs, in KN/m3). and optimum moisture content (3 sigs, in %). for this soil and type those answers in boxes 8 and 9 below.

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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A standard Proctor test was performed on a soil which has a Gg = 2.75. The moisture content and
total density results are shown in the table below.
Moisture
Wet unit weight|
Content
(KN/m³)
12%
18.1
14%
19.3
16%
20.7
18%
21.0
20%
18.2
a. Calculate the dry unit weight for each sample and type your answers in the first 5 answer
boxes below (3 sigs, in KN/m3).
b. Calculate the dry unit weight at zero air void for the 12% and 14% moisture content
samples and type those answers in boxes 6 and 7 below(3 sigs, in KN/m3). .
c. Plot the moisture content-dry unit weight curve and zero air void line on graph paper.
d. From the moisture content-dry density curve, determine the maximum dry unit weight(3
sigs, in KN/m3). and optimum moisture content (3 sigs, in %). for this soil and type those
answers in boxes 8 and 9 below.
Transcribed Image Text:A standard Proctor test was performed on a soil which has a Gg = 2.75. The moisture content and total density results are shown in the table below. Moisture Wet unit weight| Content (KN/m³) 12% 18.1 14% 19.3 16% 20.7 18% 21.0 20% 18.2 a. Calculate the dry unit weight for each sample and type your answers in the first 5 answer boxes below (3 sigs, in KN/m3). b. Calculate the dry unit weight at zero air void for the 12% and 14% moisture content samples and type those answers in boxes 6 and 7 below(3 sigs, in KN/m3). . c. Plot the moisture content-dry unit weight curve and zero air void line on graph paper. d. From the moisture content-dry density curve, determine the maximum dry unit weight(3 sigs, in KN/m3). and optimum moisture content (3 sigs, in %). for this soil and type those answers in boxes 8 and 9 below.
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