A series of CU triaxial compression tests have been performed with pore pressure mea- surements on "identical" 2.50-in. diameter specimens of a clay. All of the specimens had an initial height of 6.00 in. The test results were as follows: Test No. Pt (lb) 41.7 59.9 97.1 1 2 3 Conditions at Failure &t (%) 03 (lb/in.²) u (lb/in.²) 5.5 6.9 6.8 10.3 18.5 27.3 4.3 5.6 7.1 Plot the total stress and effective stress Mohr circles at failure and draw the total stress and effective stress Mohr-Coulomb failure envelopes. Determine c' and ', and CT and T. Express c' and cT in lb/ft².
A series of CU triaxial compression tests have been performed with pore pressure mea- surements on "identical" 2.50-in. diameter specimens of a clay. All of the specimens had an initial height of 6.00 in. The test results were as follows: Test No. Pt (lb) 41.7 59.9 97.1 1 2 3 Conditions at Failure &t (%) 03 (lb/in.²) u (lb/in.²) 5.5 6.9 6.8 10.3 18.5 27.3 4.3 5.6 7.1 Plot the total stress and effective stress Mohr circles at failure and draw the total stress and effective stress Mohr-Coulomb failure envelopes. Determine c' and ', and CT and T. Express c' and cT in lb/ft².
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A series of CU triaxial compression tests have been performed with pore pressure mea-
surements on "identical" 2.50-in. diameter specimens of a clay. All of the specimens had an
initial height of 6.00 in. The test results were as follows:
Test No. P₁ (lb)
41.7
59.9
97.1
1
2
3
Conditions at Failure
&t (%)
5.5
6.9
6.8
03 (lb/in.²) u (lb/in.²)
4.3
5.6
7.1
10.3
18.5
27.3
Plot the total stress and effective stress Mohr circles at failure and draw the total stress
and effective stress Mohr-Coulomb failure envelopes. Determine c' and ', and c and
r. Express c' and cT in lb/ft².
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