International Scientific Journal


In geotechnical engineering, the mechanical behavior of rocks under various In-situ conditions (stress state including axial stress, confining pressure, pore water pressure) have always been an important topic. Therefore, the confining pressure effect on the permeability and mechanical behavior of different size sandstone samples under a certain pore water pressure condition was studied. The permeability of different sizes samples shows roughly the same exponential de-creasing law with the increase of confining pressure. In the mechanical behavior test, both the loading Young's modulus E+ and the unloading Young's modulus E- increased continuously with increasing confining pressure, while the unloading Poisson's ratio m - decreased to a certain value and then remained almost constant.
PAPER REVISED: 2022-11-02
PAPER ACCEPTED: 2022-11-20
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THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [647 - 654]
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© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence