CEGE0100 PART I: TEST (SUPPL)
Answer on the separate sheet provided.
A ground investigation is being carried out on the site of a future development. Preliminary results are available from laboratory tests on soil samples that were retrieved from the site. You are required to analyse the data and determine the following:
1. Particle size distribution, d50, coefficient of uniformity (plot on Fig.1) [30 marks]
2. Plasticity index [40 marks]
3. Soil description [30 marks]
The laboratory test results are summarised below.
Table 1 (sieving results)
B.S. sieve (mm) |
mass retained on sieve (g) |
6 |
0 |
2 |
94 |
1.18 |
67.64 |
0.6 |
127.51 |
0.45 |
45.76 |
0.212 |
63.44 |
0.15 |
38.47 |
0.063 |
62 |
remaining |
115.1 |
Table 2 (plastic limit tests)
|
mass tin + |
mass tin + |
mass tin (g) |
sample 1 |
50.6 |
47.1 |
29.5 |
sample 2 |
50.1 |
46.8 |
29.3 |
sample 3 |
50.5 |
47 |
29.5 |
Table 3 (liquid limit tests)
|
penetration (mm) |
water content (%) |
sample 1 |
8.1 |
24.3 |
sample 2 |
18.2 |
35.1 |
sample 3 |
29.8 |
55 |
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