Plot sieve size (x-axis) against % finer. Calculate for D60mm, D30mm and D10mm. Find the percentage of gravel, sand and fines. Find the CU (Coefficient of uniformity) and CC (coefficient of curvature). How does the particle size distribution of granular materials affect the properties of soil such as bulk density, permeability, and physical stability?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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  1. Plot sieve size (x-axis) against % finer.
  2. Calculate for D60mm, D30mm and D10mm.
  3. Find the percentage of gravel, sand and fines.
  4. Find the CU (Coefficient of uniformity) and CC (coefficient of curvature).
  5. How does the particle size distribution of granular materials affect the properties of soil such as bulk density, permeability, and physical stability?

 

Note the following:  = D60/D10 and CC= D302 /D60 ×D10

 

See attached picture for information

Sieve
No(g)
4
10
20
40
60
140
200
Pan
PARTICLE SIZE DISTRIBUTION(SIEVE ANALYSIS)
Sieve No Retained % retained Cumulative
in mm
retained %
4.75
2
0.85
0.425
0.25
0.106
0.075
wt
1.3
6.5
55.6
131.5
114.5
146.4
24.1
18.2
T=498.1
0.26
1.3
11.16
26.4
22.99
29.4
4.84
3.65
T=100
0.26
1.56
12.72
39.12
62.11
91.61
96.45
100
T=100
% finer
99.74
98.44
87.28
60.88
37.89
8.39
3.55
0
T=0
Grain
sizes
Gravel
Gravel
Sand
Sand
Sand
Sand
Sand
Sand
Weight of soil sample-500g
1. Note: % retained and cumulative % retained should be 100% if the experiment was
well conducted, provided the sieves have no tears.
2. %finer should be zero if no particle was let out.
3. To check if the test was properly done, sum the retained weights in the sieve and
subtract from the original weight, then divide by the original weight x 100
4. Retained weight-weight of sample retained in size.
5. % Retained= retained weight/total weight of sample x100.
6. Cumulative retained %= cumulative sum of % retained
7. % finer-100- cumulative retained%
Transcribed Image Text:Sieve No(g) 4 10 20 40 60 140 200 Pan PARTICLE SIZE DISTRIBUTION(SIEVE ANALYSIS) Sieve No Retained % retained Cumulative in mm retained % 4.75 2 0.85 0.425 0.25 0.106 0.075 wt 1.3 6.5 55.6 131.5 114.5 146.4 24.1 18.2 T=498.1 0.26 1.3 11.16 26.4 22.99 29.4 4.84 3.65 T=100 0.26 1.56 12.72 39.12 62.11 91.61 96.45 100 T=100 % finer 99.74 98.44 87.28 60.88 37.89 8.39 3.55 0 T=0 Grain sizes Gravel Gravel Sand Sand Sand Sand Sand Sand Weight of soil sample-500g 1. Note: % retained and cumulative % retained should be 100% if the experiment was well conducted, provided the sieves have no tears. 2. %finer should be zero if no particle was let out. 3. To check if the test was properly done, sum the retained weights in the sieve and subtract from the original weight, then divide by the original weight x 100 4. Retained weight-weight of sample retained in size. 5. % Retained= retained weight/total weight of sample x100. 6. Cumulative retained %= cumulative sum of % retained 7. % finer-100- cumulative retained%
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