Which of these soils should, in principle, provide: a) a higher content of clay?
ID: 1827402 • Letter: W
Question
Which of these soils should, in principle, provide:
a) a higher content of clay?
b) a higher dry density?
c) a larger voids?
The following properties were determined for two index soils A and B:
Properties
SoilA
Soil B
Limit Liquidity
0,62
0,34
Limit Plasticity
0,26
0,19
Moisture Content
38%
25%
Hygroscopic moisture Density of Grains
1,5%
2,72
7,0%
2,67
Degree of Saturation
1,00
1,00
Properties
SoilA
Soil B
Limit Liquidity
0,62
0,34
Limit Plasticity
0,26
0,19
Moisture Content
38%
25%
Hygroscopic moisture Density of Grains
1,5%
2,72
7,0%
2,67
Degree of Saturation
1,00
1,00
Explanation / Answer
(A) For Clay LL<50, thus Soil B has higher content of clay.
(B) More is the plasticity, higher the toughness index = higher dry density. Thus soil A has higher dry density.
(C) eS = wG S,G are same for both. Therefore, e is proportional to moisture content. Soil A has larger void ratio.
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