Geology Reference
In-Depth Information
1
[B] Triaxial Compression Data
(Specimen no.
)
10.0
(1)
Chamber pressure on test specimen,
3
psi
0.02
(2)
Rate of axial strain
in./min
5.82
(3)
Initial height of specimen, H
0
in.
6,000
(4)
Proving ring calibration
lb/in.
Cross-
Unit Axial
Elapsed
Deformation
Axial
Sectional
Proving
Applied
Load
Time
Dial,
H
Strain,
Area, A
Ring Dial
Axial Load
(Deviator
(min)
(in.)
(in./in.)
(in.
2
)
(in.)
(lb)
Stress) (psi)
(6)
(5)
A
0
(6)
(4)
(3)
=
ยข
H
H
0
(4)
(5)
proving ring
calibration
(7 )
=
(1)
(2)
1
0
0
0
4.91
0
0
0
0.005
0.0009
4.91
0.0012
7.2
1.5
0.010
0.0017
4.92
0.0025
15.0
3.0
0.015
0.0026
4.92
0.0037
22.2
4.5
0.020
0.0034
4.93
0.0053
31.8
6.5
0.025
0.0043
4.93
0.0066
39.6
8.0
0.050
0.0086
4.95
0.0140
84.0
17.0
0.075
0.0129
4.97
0.0201
120.6
24.3
0.100
0.0172
5.00
0.0256
153.6
30.7
0.125
0.0215
5.02
0.0294
176.4
35.1
0.150
0.0258
5.04
0.0321
192.6
38.2
0.175
0.0301
5.06
0.0337
202.2
40.0
0.200
0.0344
5.08
0.0331
198.6
39.1
11.25
0.225
0.0387
5.11
0.0305
183.0
35.8
10.0
Minor principal stress (i.e., chamber pressure,
3
)
psi
Unit axial load at failure, p
40.0
psi
Major principal stress at failure (i.e.,
1
3
p)
50.0
psi
360
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