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- W3201352006 abstract "Fluid in porous rocks affect the performance of rock structures and thus it is important to determine the effective stress in wide range of rock engineering applications. In this study, Bibai Sandstone, a hard-clastic rock, was subjected to multistage and single stage triaxial tests to determine the coefficients of effective stress corresponding to peak and residual strength states ( <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Peak}}$</tex> and <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Residual}}$</tex> ) through, Modified Failure Envelope Method (MFEM). The coefficients of effective stress of intact and fractured Bibai Sandstone specimens ( <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Biot}^{prime}mathrm{s}}$</tex> and <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Fractured}}$</tex> ) were determined using hydrostatic compression test and compared with the values obtained for <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Peak}}$</tex> and <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Residual}}$</tex> by MFEM. Microstructure analysis was carried out on the images of blue resin impregnated thin sections using Imagej software and a post-compression macrostructure analysis was performed using micro-focus xray computed tomography (CT). <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Biot}^{prime}mathrm{s}}$</tex> and <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$alpha_{-text{Peak}}$</tex> decreased with increasing confining pressure which was related to the microstructure of the rocks. Further, the applicability of MFEM were discussed." @default.
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- W3201352006 date "2021-07-27" @default.
- W3201352006 modified "2023-09-24" @default.
- W3201352006 title "Effective Stress Coefficient through MFEM and Confining Pressure Dependency of Bibai Sandstone" @default.
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- W3201352006 doi "https://doi.org/10.1109/mercon52712.2021.9525737" @default.
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