A triaxial test is conducted on a soil sample which was consolidated under a cell pressure of 550 kN/m² with a back pressure of 250 kN/m². Thereafter drainage was not allowed and cell pressure was raised to 675 kN/m² with pore water pressure reading of 360 kN/m.². After that the axial load is increased by 455 kN/m², and corresponding pore water pressure reading is 575 kN/m². The Skempton's parameter A is (Round off to two decimal places).

A triaxial test is conducted on a soil sample which was consolidated under a cell pressure of 550 kN/m² with a back pressure of 250 kN/m². Thereafter drainage was not allowed and cell pressure was raised to 675 kN/m² with pore water pressure reading of 360 kN/m.². After that the axial load is increased by 455 kN/m², and corresponding pore water pressure reading is 575 kN/m². The Skempton's parameter A is (Round off to two decimal places).

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter12: Shear Strength Of Soil

Section: Chapter Questions

Problem 12.6P

See similar textbooks

Similar questions

A soil sample was consolidated under a cell pressure of 8 kg/cm², pore water pressure of 4.5 kg/cm². With no drainage permitted the cell pressure was raised to 10 kg/cm² results in increased pore water pressure to 5.75 kg/cm². The axial load was then increased to give a deviator stress of 6.25 kg/cm² (with the cell pressure at 10 kg/cm2), pore pressure is now noted to be 7.15 kg/cm². The ratio of pore pressure coefficients B to A is
Don't attempt wrong i will downvote.....A cylindrical soil sample, 7.3 cm in diameter and 16.8 cm in height, is tested in a constant-head permeability apparatus. A constant head of 75 cm is maintained during the test. After 1 minute of testing, a total of 945.7 gm of water was collected. The temperature was 20 oC. The void ratio of the soil was 0.43. Calculate the following: 1. The hydraulic gradient 2. The flow rate 3. The discharge velocity 4. The seepage force per unit volume 5. The coefficient of permeability
In a falling head permeability test the length and area of cross section of soil specimen are 0.17 m and 21.8 x 10-4 m 2 respectively. Calculate the time required for the head to drop from 0.25 m to 0.10 m. The area of cross section of stand pipe is 2.0 x 10-4 m 2 . The sample has three layers with permeabilities 3 x 10-5 m/sec for first 0.06 m, 4 x 10-5 m/sec for second 0.06 m and 6 x 10-5 m/sec for the third 0.05 m thickness. Assume the flow is taking place perpendicular to the bedding plane.
A sample coarse grained soil is 50mm. In diameter and 150mm long was tested in a constant-head apparatus. The soil sample was prepared at a void ratio of 1.5. The total head was kept constant at 300mm and the amount of water is collected in 4 sec. was 50cm^3. The test temperature was 22°Ca.) Compute the temperature correction factor.b.) Compute the corrected coefficient of permeability in cm/sec. c.) Compute the interstitial velocity.
A triaxial test is conducted on a soil sample which was consolidated under a cell pressure of 550 kN/m² with a back pressure of 250 kN/m². Thereafter drainage was not allowed and cell pressure was raised to 675 kN/m² with pore water pressure reading of 360 kN/m.². After that the axial load is increased by 455 kN/m², and corresponding pore water pressure reading is 575 kN/m². The Skempton's parameter A is (Round off to two decimal places).
Please help me with these question. KINDLY RECHECK IT CAREFULLY, MY LIFE IS ON THE LINE. PLEASE
In falling head permeability test the initial head was 350 mm and the final head was 50 mm. The cross-sectional area of the burette was 200 mm2. The sample was 50 mm in diameter and 100 mm long. If the test took 8 hours and 45 minutes, what was the coefficient of permeability of the soil in m/s? a.7.15 x 10-7 m/s b.6.29 x 10-7 m/s c.7.89 x 10-7 m/s d.8.78 x 10-7 m/s e.5.69 x 10-7 m/s
Table 2.A consolidation test data An oedometer test is conducted for a soil sample.The sample is consolidated under vertical stress of 50 kPa. The Time (min) Dial gauge reading (mm) 194 0.01 0.02 193 0.05 190.5 oedometer test finished at 144 min and 0.1 186.5 data are given in Table I. Average thickness of the sample is 20 mm. Predict the coefficient of 0.2 181 0.5 173 1 168 2 164.5 consolidation (c, in mm?/min) using Casagrande log t method and Taylor square root of t method. Please use the empty graphical papers. 5 161.5 10 160 20 158.5 50 156.9 100 155.7 144 155.1
A triaxial test on a saturated soil has the ff. results:a. Determine the drained angle of friction and cohesion of the soil. b. Determine the undrained angle of friction and cohesion of the soil. Please answer this asap. For upvote. Thank you very much
9. A consolidated drained test was carried out on a sandy clay under a cell pressure of 250 kPa. A constant back pressure of 120 kPa applied throughout the test. The dimensions of the sample were 76 mm x 38 mm. Addional test data recorded at failure were: Load transducer force = 368 N 3 Measured change in volume = 2.42 x 10 m³ Axial deformation = 2.05 mm Determine the major principal stress, o, at failure. (455 kPa)
Afalling-head permeability test is performed on a fine-grained soil. The soil sample has a length of 120 mm and a cross-sectional area of 600 mm2. The water in the standpipe flowing into the soil is 0.60 m above the top of the sample at the start of the test. It falls 50 mm in 30 minutes. The standpipe has a cross-sectional area of 200 mm2. (a) Make a sketch of the described conditions. (b) What is the coefficient of permeability in millimeters per second? (c) What is the coefficient of permeability in feet per minute? (d) On the basis of the calculated value for khyd, what is the probable soil type?
FUNDAMENTALS OF GEOTECHNICAL ANALYSIS A constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The head difference applied during the test is 20 cm and 7 cm3 is collected over a time of 100 sec. Provide step by step solution. a) Compute the permeability based on these test conditions and results. b) A falling head test is conducted on the same soil specimen at the same time (t1 – t2 = 100 sec), and the standpipe diameter is 0.8 cm. If the average head during the test should be 18 cm, what are h1 and h2 values?