Group#: Load File:

THE COOPER UNION
Albert Nerken School of Engineering
SOIL MECHANICS LABORATORY
Experiment No. 5 - Compaction Test
Name:

Date:

Group No.:
Members:

Location: Depth:
Boring: Elevation:
Sample: Description:
Grooving Tool:

Formulae:

1) Porosity = (62.4 Gs - dry unit wt.) / (62.4Gs
2) Dry Unit Wt* = (62.4 Gs) / [1 + ((moist. cont.) Gs / S)]
*This formula is only for computaional dry unit weights.


TABLE 1

Diameter of Mold, in.
Depth of Mold, in.
Volume of Mold, ft3
Weight of Mold and Base, gm.
Weight of Hammer, lbs.
Height of Fall of Hammer, in.
No. of Layers
No. of Blows per Layer
Compaction Energy, in-lbs/ft3


TABLE 2

Specific Gravity Gs =

Determination Number

1

2

3

4

Weight of Mold and Wet Soil, gm.
Weight of Mold, gm.
Weight of 1/30 ft3 Wet Soil, gm.
Wet Unit Weight, pcf.
Weight of Container and Wet Soil, gm.
Weight of Container and Dry Soil, gm.
Weight of Moisture
Weight of Container, gm.
Weight of Dry Soil, gm.
Moisture Content, %
Dry Unit Weight, pcf.
Porosity, %
Dry Unit Weight (Theoretical) at S = 100%

Dry Unit Weight (Theoretical) at S = 80%

 

TABLE 3

Determination No. 1

Load Ring Number:

Diameter of Loading Block, in. :

Penetration, in. Number of Divisions Load (lbs) Stress (psi)
0.000
0.025
0.050
0.075
0.100
0.200
0.300
0.400
0.500

Determination No. 2

Load Ring Number:

Diameter of Loading Block, in. :

Penetration, in. Number of Divisions Load (lbs) Stress (psi)
0.000
0.025
0.050
0.075
0.100
0.200
0.300
0.400
0.500

Determination No. 3

Load Ring Number:

Diameter of Loading Block, in. :

Penetration, in. Number of Divisions Load (lbs) Stress (psi)
0.000
0.025
0.050
0.075
0.100
0.200
0.300
0.400
0.500

Determination No. 4

Load Ring Number:

Diameter of Loading Block, in. :

Penetration, in. Number of Divisions Load (lbs) Stress (psi)
0.000
0.025
0.050
0.075
0.100
0.200
0.300
0.400
0.500


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