Evaluating the variations of shear wave velocity and dry density of schist rock under the weathering effect

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Seyed Mousavi Seyed Zanyar; TAVAKOLI HOSSEIN; MOAREFVAND PARVIZ; REZAEI MOHAMMAD

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Journal: ENGINEERING GEOLOGY Year:2020 | Volume:13 | Issue:1 Page(s): 87-102

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Title

Evaluating the variations of shear wave velocity and dry density of schist rock under the weathering effect

Author(s)

Seyed Mousavi Seyed Zanyar | TAVAKOLI HOSSEIN | MOAREFVAND PARVIZ | REZAEI MOHAMMAD | Issue Writer Certificate

Keywords

Angouran mineQ1

Schist rockQ1

Dry densityQ1

Shear wave velocityQ2

Freezing-thawing processQ1

Abstract

Freezing-melting cycles are a serious natural weathering for rock engineering projects and constructed structures on the rocks in mountainous regions. So evaluation of the rock geo mechanical parameters reduction due to freezing-thawing cycles is very crucial in these areas. In this study, Shear wave velocity and Dry density of intact and weathered schist samples (under freezing-thawing cycles of 7, 15, 25, 40 and 75) of the Angouran mine wall were measured. For each weathering cycle, 5 samples have been tested and calculations were made based on their average values. Results showed that by increasing the number of weathering cycles, the Shear wave velocity and Dry density values of samples are exponentially decreased while the initial cycles of freezing-thawing have the less effect on rock properties. By analyzing the obtained results, an experimental equation was extracted and proposed to calculate Shear wave velocity and Dry density in schist against the different cycles of freezing-thawing. Also, the texture of samples in intact status and after 75 cycles of freezing-thawing was studied by an electronic microscope. The results of microscopic study indicate that the texture of intact samples is denser than those of the weathered status. Also, after applying 75 cycles of freezing-thawing, the spacing between discontinuities has been increased and new cracks created in the samples body.

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APA: Copy

Seyed Mousavi, Seyed Zanyar, TAVAKOLI, HOSSEIN, MOAREFVAND, PARVIZ, & REZAEI, MOHAMMAD. (2020). Evaluating the variations of shear wave velocity and dry density of schist rock under the weathering effect. ENGINEERING GEOLOGY, 13(1 ), 87-102. SID. https://sid.ir/paper/380478/en

Vancouver: Copy

Seyed Mousavi Seyed Zanyar, TAVAKOLI HOSSEIN, MOAREFVAND PARVIZ, REZAEI MOHAMMAD. Evaluating the variations of shear wave velocity and dry density of schist rock under the weathering effect. ENGINEERING GEOLOGY[Internet]. 2020;13(1 ):87-102. Available from: https://sid.ir/paper/380478/en

IEEE: Copy

Seyed Zanyar Seyed Mousavi, HOSSEIN TAVAKOLI, PARVIZ MOAREFVAND, and MOHAMMAD REZAEI, “Evaluating the variations of shear wave velocity and dry density of schist rock under the weathering effect,” ENGINEERING GEOLOGY, vol. 13, no. 1 , pp. 87–102, 2020, [Online]. Available: https://sid.ir/paper/380478/en

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