3. A sandstone core composed of quartz and feldspar grains with calcite cement is 75 mm in diameter and 160 mm long. On saturation in water, its wet weight is 1900 gr; and after oven drying its weight is 1862 gr. If the specific gravity (G) is equal to 2.7 for this sandstone, calculate the saturated unit weight, the dry unit weight, and the porosity of this core.

3. A sandstone core composed of quartz and feldspar grains with calcite cement is 75 mm in diameter and 160 mm long. On saturation in water, its wet weight is 1900 gr; and after oven drying its weight is 1862 gr. If the specific gravity (G) is equal to 2.7 for this sandstone, calculate the saturated unit weight, the dry unit weight, and the porosity of this core.

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 10.12P

See similar textbooks

Similar questions

A sandstone core composed of quartz and feldspar grains with calcite cement is 75 mm in diameter and 160 mm long. On saturation in water, its wet weight is 1900 gr; and after oven drying its weight is 1862 gr. If the specific gravity (G) is equal to 2.7 for this sandstone, calculate the saturated unit weight, the dry unit weight, and the porosity of this core.
A core sample of granite, 12 cm long and 6 cm in diameter, was tested in unconfined compression. The granite was known to have a modulus of elasticity of 16 x 10^3 MPa. a. At a pressure of 69 MPa, what would be the reduction in length of the sample b. At this pressure what would be the vertical load on the sample? c. At 69 MPa stress the core showed an increase in diameter of 0.011 mm. What is the Poisson's Ratio for the sample?
STATEMENTS: A - an increase in volume is expected in 2:1 expanding type of clay when wet/saturated with water. B - cracking is expected when an expanding type of clay dries. A- both statements are trueB- neither statements are trueC- only statement A is true D- only statement B is true
For a sandstone rock sample (assuming average limestone matrix density) saturated 100% with water, calculate the bulk density of the sample if its porosity is known to be 11%.
A dry sandstone sample of diameter 22 mm and length 35 mm weighs 32 g. the sample is crushed and a pycnometer is used to estimate the grain density having the following date: W3 = 91 g and W4 = 72 g. determine the grain density of sandstone and porosity of the sample.
Prove the relationship between porosity and void ratio
For a limestone rock sample (assuming average limestone matrix density) saturated 100% with water, calculate the bulk density of the sample if its porosity is known to be 7%.
Given a depth of burial of 10 kilometers, the density of 2.65 g/cm3, lithostatic stress to be 2.36 kilobar at normal temperature. dimension of granite is at its normal dimension. What is the dimension of the cubical granite at increased temperature having an increase in lithostatic stress to be 2.86 kilobars when temperature increases? The depth of burial is still the same.
3. In a drained tri-axial test, a specimen is confined under pressure and axially loaded until failure. The failure conditions of the specimen are analyzed for shear strength. What is the value of the minor principle stress? Half the value of the major principle stress Twice the value of the major principle stress . The same as the confining pressure The same as the cohesion value ● ● ●
The height of the capillary rise of water increases as particle diameter increases True O False O Normal fault is generated by compressive force True O False O The porosity is the ratio of void volume to total volume True O False O
A CID TXC test was performed on a sample of sand. At the end of consolidation, the back pressure was 140 kPa, and the cell pressure was 340 kPa. At failure, the deviator stress was (ơ1 – 03)f = 200 kPa. a. What was the total pore water pressure, u, at failure? b. Calculate the principle effective stresses, ơi' and os', at failure. c. Calculate the friction angle, d', for this soil.
What is the equivalent constrained modulus in psf if the initial stress is 418 psf, the change in stress is 1204 psf, and the maximum past pressure is 418 psf? The initial void ratio is 1.29. The compression index is 0.26.