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50
S
r
= w.G
s
/(v – 1)
(main text Equation 1.10)
or
S
r
= 0.4514
×
2.61
÷
1.190 = 99%
The total sample volume V
t
at any stage of the test is equal to the sample area A multiplied by
the current sample height h,
V
t
= A.h.
Also, the total volume is equal to the volume of voids V
v
+ the volume of soil grains (solids)
V
s
,
V
t
= V
s
+ V
v
= V
s
(1+V
v
/V
s
) = V
s
.(1 + e) = V
s
.v
Hence
V
t
= V
s
.v = A.h,
or
v
h
A
V
cons
t
s
==
tan
The numerical value of the constant is equal to the specific volume divided by the sample
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 Fall '11
 StuartChalk
 Analytical Chemistry

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