The raw data from grain-size test is shown below. What is the value of Cc and...
The raw data from grain-size test is shown below. What is the value of Cc and Cu?
|
Sieve # |
Sieve Size (mm) |
Mass Retained (g) |
|
¾ “ |
19.00 |
773 |
|
# 4 |
4.75 |
3316.1 |
|
# 10 |
2.00 |
298 |
|
# 30 |
0.595 |
616.1 |
|
# 50 |
0.297 |
403.9 |
|
# 100 |
0.150 |
202.4 |
|
# 200 |
0.075 |
52.2 |
|
Pan |
14.4 |
Homework Answers
D10 = 0.5 mm
D30 = 5 mm
D60 = 10.6 mm
Cu = D60/D10 = 10.6/0.5 = 21.2
Cc = D302/(D60*D10) = 52/(10.6 * 0.5) = 4.72
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