Failure Modes Analysis of Sandstones (Case Study: Markazi Province Sandstones)

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NOURI MEHRAN; KHANLARI GHOLAMREZA; Sarfarazi Vahab; Rafiei Behrooz; Rafiei Behrooz

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Journal: ENGINEERING GEOLOGY Year:2020 | Volume:13 | Issue:1 Page(s): 61-86

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Title

Failure Modes Analysis of Sandstones (Case Study: Markazi Province Sandstones)

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Keywords

sandstonesQ1

Failure modeQ1

UCSQ1

PFC2DQ1

Abstract

The aim of this study is analyzing the Failure modes of sandstones related to Markazi Province using compressive strength changes. For this purpose, the fracture modes of five different types of sandstones with different compressive strength values have been studied experimentally and numerically. Also, The effect of Failure modes on uniaxial compressive strength was quantified. block samples were collected from different sandstone formations located in northern part of Markazi province. These sandstones were divided into five types based on the textural and mineralogical characteristics. These samples were subjected to uniaxial compressive strength testing. Examination of the fracture modes showed that simple shear mode occurred at low values of strength and it changes to multiple extension mode with increasing the compressive strength. The dominant Failure mode for types 1, 2 and 4 is simple shear and for types 3 and 5 is multiple extension. Investigation of Failure modes in different strength ranges showed that the dominant Failure modes up to 140 and over 140 MPa are simple shear and multiple extension, respectively. Therefore, strength of 140 MPa was considered as the transisson point. Also, in this study, the Failure modes of the experimental samples were numerically simulated using PFC2D software. The results of numerical modeling showed a good agreement with the experimental results.

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APA: Copy

NOURI, MEHRAN, KHANLARI, GHOLAMREZA, Sarfarazi, Vahab, & Rafiei, Behrooz. (2020). Failure Modes Analysis of Sandstones (Case Study: Markazi Province Sandstones). ENGINEERING GEOLOGY, 13(1 ), 61-86. SID. https://sid.ir/paper/400237/en

Vancouver: Copy

NOURI MEHRAN, KHANLARI GHOLAMREZA, Sarfarazi Vahab, Rafiei Behrooz. Failure Modes Analysis of Sandstones (Case Study: Markazi Province Sandstones). ENGINEERING GEOLOGY[Internet]. 2020;13(1 ):61-86. Available from: https://sid.ir/paper/400237/en

IEEE: Copy

MEHRAN NOURI, GHOLAMREZA KHANLARI, Vahab Sarfarazi, and Behrooz Rafiei, “Failure Modes Analysis of Sandstones (Case Study: Markazi Province Sandstones),” ENGINEERING GEOLOGY, vol. 13, no. 1 , pp. 61–86, 2020, [Online]. Available: https://sid.ir/paper/400237/en

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