1) A dry rock weighs 240 grams and has a bulk density of 2.5 grams per cubic centimeter. When saturated with pure water at room temperature (T = 25 °C), it weighs 255 grams. At room temperature, specific volume of water is 1.00295E-03 m3 /kg. Calculate the porosity of the sample.

1) A dry rock weighs 240 grams and has a bulk density of 2.5 grams per cubic centimeter. When saturated with pure water at room temperature (T = 25 °C), it weighs 255 grams. At room temperature, specific volume of water is 1.00295E-03 m3 /kg. Calculate the porosity of the sample.

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 10.23P

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Question

1) A dry rock weighs 240 grams and has a bulk density of 2.5 grams per cubic centimeter. When
saturated with pure water at room temperature (T = 25 °C), it weighs 255 grams. At room temperature,
specific volume of water is 1.00295E-03 m3
/kg. Calculate the porosity of the sample.

2) A cylindrical core sample of 1.5 cm length and 1.2 cm2
cross-section has upstream and downstream
pressures of 2 atm and 1.25 atm, respectively, during steady state flow of water at 1.00 g/s at room
temperature. Calculate the permeability of the core. (Water @ 25 °C, viscosity = 1 cp, density of water = 0.997 g/cm3).

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