Geological behavior of sand-fines mixtures in consolidated undrained triaxial test
Geological behaviors of clean sand with fines particles were investigated in this study. Consolidated undrained triaxial shear tests (CU) were carried out on sand specimens with various fines content in the range from 0% to 60%, by weight. Two initial conditions of samples, including a constant glob...
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description | Geological behaviors of clean sand with fines particles were investigated in this study. Consolidated undrained triaxial shear tests (CU) were carried out on sand specimens with various fines content in the range from 0% to 60%, by weight. Two initial conditions of samples, including a constant global void ratio, and a constant relative density, were used in this work. Specimens were prepared by the wet tamping method. The specimens were tested by three levels of confining pressure, including 50 kPa, 100 kPa, and 200 kPa to determine some behaviors such as stress- strain, pore water pressure-strain, peak deviator stress-fines content, stress paths. Results indicated that adding more fines content to the mixture causes some complicated behaviors. The shear strength decreased until a threshold fines content of 50%, for testing at the constant void ratio index; and thereafter, it gradually increases with a further increase in fines content. The pore water pressure (PWP) of all the sand-fines mixtures rapidly increases as the axial strain reaches a value in the range of 1 to 2% and then slowly increases and reaches a stable state with a strain greater than 8%. The stress path increases to reach the peak value and continues moving towards the stress origin. Finally, the results are expected to contribute a better understanding which respects to shear strength, geological behavior of the sand-fines mixtures. |
doi_str_mv | 10.1063/5.0068377 |
format | Conference Proceeding |
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Consolidated undrained triaxial shear tests (CU) were carried out on sand specimens with various fines content in the range from 0% to 60%, by weight. Two initial conditions of samples, including a constant global void ratio, and a constant relative density, were used in this work. Specimens were prepared by the wet tamping method. The specimens were tested by three levels of confining pressure, including 50 kPa, 100 kPa, and 200 kPa to determine some behaviors such as stress- strain, pore water pressure-strain, peak deviator stress-fines content, stress paths. Results indicated that adding more fines content to the mixture causes some complicated behaviors. The shear strength decreased until a threshold fines content of 50%, for testing at the constant void ratio index; and thereafter, it gradually increases with a further increase in fines content. The pore water pressure (PWP) of all the sand-fines mixtures rapidly increases as the axial strain reaches a value in the range of 1 to 2% and then slowly increases and reaches a stable state with a strain greater than 8%. The stress path increases to reach the peak value and continues moving towards the stress origin. Finally, the results are expected to contribute a better understanding which respects to shear strength, geological behavior of the sand-fines mixtures.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/5.0068377</identifier><identifier>CODEN: APCPCS</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Axial strain ; Behavior ; Geology ; Initial conditions ; Pore water pressure ; Sand ; Shear strength ; Shear tests ; Triaxial tests ; Void ratio</subject><ispartof>AIP Conference Proceedings, 2021, Vol.2420 (1)</ispartof><rights>Author(s)</rights><rights>2021 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/acp/article-lookup/doi/10.1063/5.0068377$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,794,4512,23930,23931,25140,27924,27925,76384</link.rule.ids></links><search><contributor>Le, Tien</contributor><contributor>Bhagat, Kunal</contributor><contributor>Huynh, Thu</contributor><contributor>Nguyen, Y</contributor><contributor>Le, Nam</contributor><contributor>Phan, Le</contributor><contributor>Truong, Tri</contributor><contributor>Nguyen, Dung</contributor><contributor>Ly, Anh</contributor><contributor>Tran, Long</contributor><contributor>Nguyen, Cuong</contributor><contributor>Vo, Nghiep</contributor><contributor>Phuong, Ha</contributor><contributor>Hyunh, Phuoc</contributor><creatorcontrib>Ngo, Phong-Thanh</creatorcontrib><creatorcontrib>Phan, Vu To-Anh</creatorcontrib><title>Geological behavior of sand-fines mixtures in consolidated undrained triaxial test</title><title>AIP Conference Proceedings</title><description>Geological behaviors of clean sand with fines particles were investigated in this study. Consolidated undrained triaxial shear tests (CU) were carried out on sand specimens with various fines content in the range from 0% to 60%, by weight. Two initial conditions of samples, including a constant global void ratio, and a constant relative density, were used in this work. Specimens were prepared by the wet tamping method. The specimens were tested by three levels of confining pressure, including 50 kPa, 100 kPa, and 200 kPa to determine some behaviors such as stress- strain, pore water pressure-strain, peak deviator stress-fines content, stress paths. Results indicated that adding more fines content to the mixture causes some complicated behaviors. The shear strength decreased until a threshold fines content of 50%, for testing at the constant void ratio index; and thereafter, it gradually increases with a further increase in fines content. The pore water pressure (PWP) of all the sand-fines mixtures rapidly increases as the axial strain reaches a value in the range of 1 to 2% and then slowly increases and reaches a stable state with a strain greater than 8%. The stress path increases to reach the peak value and continues moving towards the stress origin. Finally, the results are expected to contribute a better understanding which respects to shear strength, geological behavior of the sand-fines mixtures.</description><subject>Axial strain</subject><subject>Behavior</subject><subject>Geology</subject><subject>Initial conditions</subject><subject>Pore water pressure</subject><subject>Sand</subject><subject>Shear strength</subject><subject>Shear tests</subject><subject>Triaxial tests</subject><subject>Void ratio</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2021</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNp90EtLxDAUBeAgCo6jC_9BwJ1QzaNN2qUMOgoDgii4C7d5aIZOU5N0GP-9lRlw5-rexcc5cBC6pOSGEsFvqxtCRM2lPEIzWlW0kIKKYzQjpCkLVvL3U3SW0poQ1khZz9DL0oYufHgNHW7tJ2x9iDg4nKA3hfO9TXjjd3mM0-N7rEOfQucNZGvw2JsIEzE4Rw87P0Vkm_I5OnHQJXtxuHP09nD_ungsVs_Lp8XdqhgY4bJg0FRly4E4qF3toBWtoYJp4iwzmhrQjRXEslqLltpKt5bWnJSylpSyUjM-R1f73CGGr3EqVuswxn6qVKxquGiELMtJXe9V0j5D9qFXQ_QbiN-KEvW7marUYbP_8DbEP6gG4_gPDcNt8A</recordid><startdate>20211105</startdate><enddate>20211105</enddate><creator>Ngo, Phong-Thanh</creator><creator>Phan, Vu To-Anh</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20211105</creationdate><title>Geological behavior of sand-fines mixtures in consolidated undrained triaxial test</title><author>Ngo, Phong-Thanh ; Phan, Vu To-Anh</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p2037-2a954b3a0fa8f8fab6bd162c0fe2dc1dac9e60e28c6b1e5cbe183047871124c23</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Axial strain</topic><topic>Behavior</topic><topic>Geology</topic><topic>Initial conditions</topic><topic>Pore water pressure</topic><topic>Sand</topic><topic>Shear strength</topic><topic>Shear tests</topic><topic>Triaxial tests</topic><topic>Void ratio</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ngo, Phong-Thanh</creatorcontrib><creatorcontrib>Phan, Vu To-Anh</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ngo, Phong-Thanh</au><au>Phan, Vu To-Anh</au><au>Le, Tien</au><au>Bhagat, Kunal</au><au>Huynh, Thu</au><au>Nguyen, Y</au><au>Le, Nam</au><au>Phan, Le</au><au>Truong, Tri</au><au>Nguyen, Dung</au><au>Ly, Anh</au><au>Tran, Long</au><au>Nguyen, Cuong</au><au>Vo, Nghiep</au><au>Phuong, Ha</au><au>Hyunh, Phuoc</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Geological behavior of sand-fines mixtures in consolidated undrained triaxial test</atitle><btitle>AIP Conference Proceedings</btitle><date>2021-11-05</date><risdate>2021</risdate><volume>2420</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>Geological behaviors of clean sand with fines particles were investigated in this study. Consolidated undrained triaxial shear tests (CU) were carried out on sand specimens with various fines content in the range from 0% to 60%, by weight. Two initial conditions of samples, including a constant global void ratio, and a constant relative density, were used in this work. Specimens were prepared by the wet tamping method. The specimens were tested by three levels of confining pressure, including 50 kPa, 100 kPa, and 200 kPa to determine some behaviors such as stress- strain, pore water pressure-strain, peak deviator stress-fines content, stress paths. Results indicated that adding more fines content to the mixture causes some complicated behaviors. The shear strength decreased until a threshold fines content of 50%, for testing at the constant void ratio index; and thereafter, it gradually increases with a further increase in fines content. The pore water pressure (PWP) of all the sand-fines mixtures rapidly increases as the axial strain reaches a value in the range of 1 to 2% and then slowly increases and reaches a stable state with a strain greater than 8%. The stress path increases to reach the peak value and continues moving towards the stress origin. Finally, the results are expected to contribute a better understanding which respects to shear strength, geological behavior of the sand-fines mixtures.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0068377</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Axial strain Behavior Geology Initial conditions Pore water pressure Sand Shear strength Shear tests Triaxial tests Void ratio |
title | Geological behavior of sand-fines mixtures in consolidated undrained triaxial test |
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