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Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches

This article discussed the shear behavior of crushed mudstone and claystone in Malaysia when subjected to short- and long-term immersion while staged compression-immersion-direct shear tests were performed. The crushed mudrocks were subjected to 5 stages of loading (50 kPa, 100 kPa, 150 kPa, 300 kPa...

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Main Authors: Nahazanan, Haslinda, Rosley, Ili Syazwani, Md Yusoff, Zainuddin
Format: Article
Language:English
Published: ASTM International 2019
Online Access:http://psasir.upm.edu.my/id/eprint/82106/1/Shear%20behavior%20.pdf
http://psasir.upm.edu.my/id/eprint/82106/
https://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/PAGES/JTE20180486.htm
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spelling my.upm.eprints.821062021-09-08T10:53:08Z http://psasir.upm.edu.my/id/eprint/82106/ Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches Nahazanan, Haslinda Rosley, Ili Syazwani Md Yusoff, Zainuddin This article discussed the shear behavior of crushed mudstone and claystone in Malaysia when subjected to short- and long-term immersion while staged compression-immersion-direct shear tests were performed. The crushed mudrocks were subjected to 5 stages of loading (50 kPa, 100 kPa, 150 kPa, 300 kPa, and 600 kPa) with and without immersion, whereby immersions were done at 100 kPa and 600 kPa vertical loads were referred to as long- and short-term immersion tests, respectively. A variable pressure scanning electron microscope (VPSEM) and X-ray diffraction (XRD) were employed for microstructural investigation so as to give a microstructural description of crushed mudrock failure upon shearing. It is found that short-term immersion had caused the crushed mudrocks to be less brittle while long-term immersion resulted in fully plastic straining behavior for both crushed mudrocks. XRD results revealed that claystone contained higher swelling minerals compared to mudstone, which explains the clod-form of claystone seen in VPSEM images. Based on both macrostructural and microstructural investigation, it is found that the crushed mudrocks are more susceptible to failure under short-term immersion, while long-term immersion caused the crushed mudrocks to achieve a stable state and be less sensitive to further moisture changes. ASTM International 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/82106/1/Shear%20behavior%20.pdf Nahazanan, Haslinda and Rosley, Ili Syazwani and Md Yusoff, Zainuddin (2019) Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches. Journal of Testing and Evaluation, 49 (3). pp. 2017-2027. ISSN 0090-3973 https://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/PAGES/JTE20180486.htm 10.1520/JTE20180486
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description This article discussed the shear behavior of crushed mudstone and claystone in Malaysia when subjected to short- and long-term immersion while staged compression-immersion-direct shear tests were performed. The crushed mudrocks were subjected to 5 stages of loading (50 kPa, 100 kPa, 150 kPa, 300 kPa, and 600 kPa) with and without immersion, whereby immersions were done at 100 kPa and 600 kPa vertical loads were referred to as long- and short-term immersion tests, respectively. A variable pressure scanning electron microscope (VPSEM) and X-ray diffraction (XRD) were employed for microstructural investigation so as to give a microstructural description of crushed mudrock failure upon shearing. It is found that short-term immersion had caused the crushed mudrocks to be less brittle while long-term immersion resulted in fully plastic straining behavior for both crushed mudrocks. XRD results revealed that claystone contained higher swelling minerals compared to mudstone, which explains the clod-form of claystone seen in VPSEM images. Based on both macrostructural and microstructural investigation, it is found that the crushed mudrocks are more susceptible to failure under short-term immersion, while long-term immersion caused the crushed mudrocks to achieve a stable state and be less sensitive to further moisture changes.
format Article
author Nahazanan, Haslinda
Rosley, Ili Syazwani
Md Yusoff, Zainuddin
spellingShingle Nahazanan, Haslinda
Rosley, Ili Syazwani
Md Yusoff, Zainuddin
Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
author_facet Nahazanan, Haslinda
Rosley, Ili Syazwani
Md Yusoff, Zainuddin
author_sort Nahazanan, Haslinda
title Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
title_short Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
title_full Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
title_fullStr Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
title_full_unstemmed Shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
title_sort shear behavior of crushed mudstone and claystone under macrostructural and microstructural approaches
publisher ASTM International
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/82106/1/Shear%20behavior%20.pdf
http://psasir.upm.edu.my/id/eprint/82106/
https://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/PAGES/JTE20180486.htm
_version_ 1710677156573478912
score 13.211869

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