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The City College of New York
Department of Civil Engineering
CE 345: Soil Mechanic
!ntr"ctor: Dr# $eorge Mylonaki
LAB EXPERIMENT #2:
DETERMINATION OF SPECIFIC GRAVITY OF SOIL SOLIDS
Introduction
The !"ciic $r%&it'of a given material i %efine% a the ratio
of the weight of a given vol"me of material
to the weight of an e&"al vol"me of %itille% water at 4C# !t
i %enote% 'y Gan% i %efine% a
G ( (
where)
( "nit weight of oil oli% only(( "nit weight of water at 4 C
or)
)* VG (
)(* V
where)
)( weight of oil oli%
)(( weight of waterV( vol"me of oil ( vol"me of water
Note: Thi tet i applica'le for oil particle maller than 4#+5 mm
in i,e#
T%*+" ,- R%n$" o Gor Di"r"nt Soi+ T'!"
Soil type -ange of G
San%
Silt
Clay an% ilty clay.rganic oil
/#031/#0+
/#051/#+
/#0+1/#2 1/#0
4 2+0452#%oc
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A!!%r%tu
# 6ol"metric flak 7588ml9
/# Thermometer
3# alance enitive to 8#8g
4# Ditille% water
5# 6ac""m p"mp
0# Evaporating %ihe
+# .ven
# Spat"la
2# ;latic &"ee,e 'ottle
Proc"dur"
# e the platic &"ee,e 'ottle to rine the ini%e of the
flak)making "re no oil i left ini%e#
+# ;lace the %ih in the oven to %ry it to a contant weight#
# Clean the flak# -epeat tep 3 an% 4#
2# -ecor% the weight of the flak 7)29 to the nearet 8#8g#
8# Determine the weight of %ry oil in the evaporating %ih
7).9#
5 2+0452#%oc
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C%+cu+%tion
# ),( weight of the flak oil %itille% water fille% to mark#
/# )2( weight of the flak %itille% water fille% to mark#
3# ).( weight of the %ry oil#
4# )/( weight of e&"al vol"me of water ( )2 ).? ),-
5# G %t TC( pecific gravity at TC
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DATA S3EET: D"t"rin%tion o S!"ciic Gr%&it' o Soi+ So+id
Decription of oil: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Sample No#: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Bocation: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Tete% 'y: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
$ro"p No#: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Date: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
6ol"me of flak at /8C: 588ml
Temperat"re of the tet: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
7from Ta'le /#9: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
!tem Tet Tet / Tet 3
6ol"metric flak No#
