An intact rock sample was subjected to triaxial testing, and the results of the tests are given below. When repeating the test at 15.0 MPa confinement, the jacket punctured, and the pore pressure built up to a value equal to the confining pressure during the test. What would be the peak axial stress?

An intact rock sample was subjected to triaxial testing, and the results of the tests are given below. When repeating the test at 15.0 MPa confinement, the jacket punctured, and the pore pressure built up to a value equal to the confining pressure during the test. What would be the peak axial stress?

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Shear Strength Of Soil

Section: Chapter Questions

Problem 10.9P

See similar textbooks

Similar questions

A fine sand sample undergoes consolidated undrained test. A confinement pressure of 40 kN/m² was placed on the sample. The sample was subjected to a deviator stress of 60 kN/m². A pore water pressure of 20 kN/m² was observed during the whole test. Determine the following: a) Total stress b) Effective stress c) Angle of the failure plane on the test d) Effective angle of the failure plane
A rock core sample with a diameter of 47.6 mm and a length of 11.21 cm is loaded in uniaxial compressionThe difference in length and diameter recorded during testing are respectively 0.36 mm and 0.044mm for anaxial stress of 78 MPaCalculate the Elastic modulus (GPa) and Poison's ratio tor that rock snecimen.?
A consolidated-undrained triaxial compression test was performed on a normalconsolidated clay sample. During the experiment, the confining pressure was 140 kPa, thedeviator stress was 125 kPa, and the pore water pressure was 75 kPa at the time of failure.According to the information given:i- Find the consolidated-undrained internal friction angle of the clay. ii- Find the drained friction angle of the clay
A dilatometer test was conducted in a clay deposit. The groundwater table was located at a depth of 3 m below the surface. At a depth of 8 m below the surface, the contact pressure was and the expansion stress was 350 kN/m2Determine the following:a. Coefficient of at-rest earth pressure,b. Overconsolidation ratio, OCRc. Modulus of elasticity,Assume stress at a depth of 8 m to be and 95 kN/m2 , poisson ratio=0.35.
In a tri-axial test of normally consolidated clay, the sample subjected to chamber confining pressure of 250 kPa and failed when deviator stress is 350 kPa. Which of the following gives the angle of internal friction? Which of the following gives the shear stress at failure? Which of the following gives the effective normal stress at maximum shear?
Please give me right solution according to the question. In a triaxial test on a saturated clay, the sample was consolidated under a cell pressure of 160 kPa. After consolidation the cell pressure was increased to 350 kPa, and the sample was then failed under undrained condition. If the shear strength parameters of the soil are c’ = 15.2 kPa, ϕ’ = 26°, B = 1, Af = 0.27, determine the pore pressure at the failure.
A consolidated drained (CD) triaxial test was carried out on a normally consolidated clay. The specimen was consolidated under a cell pressure of 100 kPa and back pressure of 30 kPa. The axial deviatoric stress was increased very slowly to failure, so that there was no excess pore water pressure developed during the shearing. The specimen failed under a deviatoric stress of 130 kPa. The back pressure of 30 kPa was maintained throughout the test. (i) What is the friction angle in terms of effective stresses? (ii) What are the shear stress and normal stress acting on the failure plane? Solution fast please
A consolidated drained (CD) triaxial test was carried out on a normally consolidated clay. The specimen was consolidated under a cell pressure of 100 kPa and back pressure of 30 kPa. The axial deviatoric stress was increased very slowly to failure, so that there was no excess pore water pressure developed during the shearing. The specimen failed under a deviatoric stress of 130 kPa. The back pressure of 30 kPa was maintained throughout the test. (1) What is the friction angle in terms of effective stresses? (ii) What are the shear stress and normal stress acting on the failure plane?
A triaxial test performed on a clay sample, under unconsolidated-undrained (UU) conditions, reaches a maximum (failure) axial stress (major principal stress) of 125 kPa when the confining stress (minor principal stress) is 45 kPa. What is the value of cohesion C for this sample?
In a triaxial unconsolidated undrained (UU) test on a saturated clay sample, the cell pressure was 100 kPa. If the deviatoric stress at failure was 150 kPPa, then the undrained shear strength of the Soil is...?
: In a tri-axial test of a silty soil, the sample failed at normal stress of 475 kPa and a shear stress of 350 kPa. Which of the following gives the angle of internal friction? Compute the angle that the failure plane makes with the x-axis. Compute the maximum failure stress.
A triaxial test performed on a clay sample, under unconsolidated-undrained (UU) conditions, reaches a maximum (failure) axial stress (major principal stress) of 150 kPa when the confining stress (minor principal stress) is 69 kPa. What is the value of cohesion C for this sample? Adjust your answer to ONE decimal place.