'
.
,
_85
'
MEASUREMENT OF PORQSITX AND PERMEABÏLÏTY"
The porosity of
was
by a‘ simple aÊjparàtus,
m
gure 3, based
A
small Volume of the sample was enclose‘d in &
glass vessel, the vdluäèe ofwh1ch «could be altered,by,movetnent of mercury
,
The same mercury column served
means
measuring both the
volume of the vessekand ;tlre ptesSureÏ w1thm1t
î
'
'
Thus Boyle’s law becomes
'
_’ __f
'
-
.
{
‘ :
L
=P————————IW“Ο) _P2(ÏV2“V)
i
i
1161
.
—
(P2—P1)Y
'
Where a
:
porosity
__
,.
,
‘
V :: total volu‘me”of sample
_Ÿ'
'
V1 = total volume above the me‘rcury at p1
"
'
,
V2 = total volume above the meteÿry
'
_
_
'
,
“' .ÿï—
Porous
'
"
'
'
J‘“
<" ,“
',;
,
: ?; 'JÎ"Ÿ
.,
;:.'
@‘_…L,i
'
g
_,
…
.
,…
.
.…..
.
,
,_
FIGURE 3 Poros1tyapparatus
'
à” <
Permeabity
.
'
? Ï_ÏÎ
[" ‘;…ÏÏ
offreeze—dried productomowntmcknessandeross—secüomlarea1smseed(sengure4)
.
À needle
“be
_
'
‘
'
;
-
mser1es
va°““mp“mpweæ
,
.
,
_85
'
MEASUREMENT OF PORQSITX AND PERMEABÏLÏTY"
The porosity of
was
by a‘ simple aÊjparàtus,
m
gure 3, based
A
small Volume of the sample was enclose‘d in &
glass vessel, the vdluäèe ofwh1ch «could be altered,by,movetnent of mercury
,
The same mercury column served
means
measuring both the
volume of the vessekand ;tlre ptesSureÏ w1thm1t
î
'
'
Thus Boyle’s law becomes
'
_’ __f
'
-
.
{
‘ :
L
=P————————IW“Ο) _P2(ÏV2“V)
i
i
1161
.
—
(P2—P1)Y
'
Where a
:
porosity
__
,.
,
‘
V :: total volu‘me”of sample
_Ÿ'
'
V1 = total volume above the me‘rcury at p1
"
'
,
V2 = total volume above the meteÿry
'
_
_
'
,
“' .ÿï—
Porous
'
"
'
'
J‘“
<" ,“
',;
,
: ?; 'JÎ"Ÿ
.,
;:.'
@‘_…L,i
'
g
_,
…
.
,…
.
.…..
.
,
,_
FIGURE 3 Poros1tyapparatus
'
à” <
Permeabity
.
'
? Ï_ÏÎ
[" ‘;…ÏÏ
offreeze—dried productomowntmcknessandeross—secüomlarea1smseed(sengure4)
.
À needle
“be
_
'
‘
'
;
-
mser1es
va°““mp“mpweæ
,