Answered: Q2 – A rock sample 102 mm in diameter…

Q2 – A rock sample 102 mm in diameter is subjected to axial load up to failure at 140 kN ,what is the compressive strength . how you classify this rock.

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter13: Stone

Section: Chapter Questions

Problem 2RQ

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Q2 – A rock sample 102 mm in diameter is subjected to axial load up to failure
at 140 kN ,what is the compressive strength . how you classify this rock.

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rock mechanicz
this is a rock mechanics class
1. Triaxial compression tests are done on quartzite rocks, the results are shown below. (0₁+03)/2 -964.25 14500 19575 23200 29000 43210 63075 psi (01-03)/2 964.25 14500 18850 21750 26100 35960 48575 psi Comment on the applicability of each of the Mohr-Coulomb, Griffith, and Hoek-Brown criteria for the testing results.
Q3 - A point load test is made on a rock sample of 80 mm diameter . If it is broke at 50 kN Determine the equivalent uniaxial compressive strength . classify this rock
1. a. Draw a clearly labelled diagram for a complete stress-strain curve representing the various stages that a rock undergoes when subjected to a uniaxial compressive stress and discribe the stages of the diagram
Please correct solution
Not site specific I am checking calculations
Determine the fracture pressure at 3,000 ft for Gulf Coast using Hubbert & Willis, Matthews & Kelly and Eaton's methods. The available data for this formation is given as %=0.41 K=0.000085 A-¹ Pg=2.6 P=1.074 Fa=0.45 hand written plz μ=0.36
Exercises at the end of the third chapter of Goodman's book Introduction to Rock Mechanics (Please answer question two, thank you)
Describe brittle and dilative behaviour of rock. Show both behaviours with typical stress-strain curves.
250 Failure point Failure point 200 150 100 III II I II III 50 -0.5 1.5 -1 Lateral strain ɛ3, 0.5 1 Axial strain ɛ1, % Axial stress
(d) Figure 1 shows rock samples being tested for their uniaxial compressive strength (UCS). Some samples display fracture/weakness planes that are at different orientation with respect to the loading axis (as shown by the arrows). The loading configuration of each sample is shown in (i) to (v). Answer the following questions: Between samples (ii) and (iii) which one will display a lower strain at failure? Between sample (ii) and (iv) which one will display a lower Poisson's ratio? Explain briefly why sample (i) and (ii) will exhibit almost similar strengths? Among the 5 samples (i) to (v), which sample will display the lowest compressive strength? State reason for your answer ☐