A hydro-mechanical coupled solution for electro-osmotic consolidation in unsaturated soils considering the decrease in effective voltage with time
For electro-osmotic consolidation in unsaturated soils, coupled deformation, inconsistent changes in hydraulic conductivity and electro-osmotic permeability with matric suction, and a decrease in effective voltage with time occur simultaneously. To consider all of these processes, an analytical solu...
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| Veröffentlicht in: | Computers and geotechnics 2021-05, Vol.133, p.104050, Article 104050 |
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| creator | Wang, Liujiang Shen, Chaomin Liu, Sihong Alonso, Eduardo Huang, Penghua |
| description | For electro-osmotic consolidation in unsaturated soils, coupled deformation, inconsistent changes in hydraulic conductivity and electro-osmotic permeability with matric suction, and a decrease in effective voltage with time occur simultaneously. To consider all of these processes, an analytical solution was proposed. The time-stepping method was adopted in the calculation of the solution to depict the nonlinear change in shrinkage deformation with matric suction. The accuracy of the proposed analytical solution was validated by comparison with results from laboratory tests and from a previously presented solution without considering coupled deformation. Then, a parametric study was conducted. The results indicate that the dissipation of the pore water pressure is slow when considering coupled deformation, but a large volume of water is discharged in the end, especially for soils with a large volumetric shrinkage index Cm. A larger final negative pore water pressure and discharged water can be predicted by considering the inconsistent changes in hydraulic conductivity and electro-osmotic permeability. Finally, with the consideration of the decrease in effective voltage over time, both the maximum negative pore water pressure and final drainage decrease, which is consistent with field observations. |
| doi_str_mv | 10.1016/j.compgeo.2021.104050 |
| format | Article |
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To consider all of these processes, an analytical solution was proposed. The time-stepping method was adopted in the calculation of the solution to depict the nonlinear change in shrinkage deformation with matric suction. The accuracy of the proposed analytical solution was validated by comparison with results from laboratory tests and from a previously presented solution without considering coupled deformation. Then, a parametric study was conducted. The results indicate that the dissipation of the pore water pressure is slow when considering coupled deformation, but a large volume of water is discharged in the end, especially for soils with a large volumetric shrinkage index Cm. A larger final negative pore water pressure and discharged water can be predicted by considering the inconsistent changes in hydraulic conductivity and electro-osmotic permeability. Finally, with the consideration of the decrease in effective voltage over time, both the maximum negative pore water pressure and final drainage decrease, which is consistent with field observations.</description><identifier>ISSN: 0266-352X</identifier><identifier>EISSN: 1873-7633</identifier><identifier>DOI: 10.1016/j.compgeo.2021.104050</identifier><language>eng</language><publisher>New York: Elsevier Ltd</publisher><subject>Consolidation ; Coupled deformation ; Deformation ; Discharge ; Effective voltage ; Electric potential ; Electro-osmotic consolidation ; Exact solutions ; Hydrostatic pressure ; Laboratory tests ; Matric suction ; Nonlinearity ; Permeability ; Pore pressure ; Pore water ; Pore water pressure ; Shrinkage ; Soil ; Soil mechanics ; Soil permeability ; Soil shrinkage ; Soil suction ; Soils ; Unsaturated soils ; Voltage ; Water pressure</subject><ispartof>Computers and geotechnics, 2021-05, Vol.133, p.104050, Article 104050</ispartof><rights>2021 Elsevier Ltd</rights><rights>Copyright Elsevier BV May 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-292a16b1dfe2dbe78e2b9efa85ffaf79236b8b7623f91bd2546eeeeddfb24c53</citedby><cites>FETCH-LOGICAL-c337t-292a16b1dfe2dbe78e2b9efa85ffaf79236b8b7623f91bd2546eeeeddfb24c53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0266352X21000537$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Wang, Liujiang</creatorcontrib><creatorcontrib>Shen, Chaomin</creatorcontrib><creatorcontrib>Liu, Sihong</creatorcontrib><creatorcontrib>Alonso, Eduardo</creatorcontrib><creatorcontrib>Huang, Penghua</creatorcontrib><title>A hydro-mechanical coupled solution for electro-osmotic consolidation in unsaturated soils considering the decrease in effective voltage with time</title><title>Computers and geotechnics</title><description>For electro-osmotic consolidation in unsaturated soils, coupled deformation, inconsistent changes in hydraulic conductivity and electro-osmotic permeability with matric suction, and a decrease in effective voltage with time occur simultaneously. To consider all of these processes, an analytical solution was proposed. The time-stepping method was adopted in the calculation of the solution to depict the nonlinear change in shrinkage deformation with matric suction. The accuracy of the proposed analytical solution was validated by comparison with results from laboratory tests and from a previously presented solution without considering coupled deformation. Then, a parametric study was conducted. The results indicate that the dissipation of the pore water pressure is slow when considering coupled deformation, but a large volume of water is discharged in the end, especially for soils with a large volumetric shrinkage index Cm. A larger final negative pore water pressure and discharged water can be predicted by considering the inconsistent changes in hydraulic conductivity and electro-osmotic permeability. Finally, with the consideration of the decrease in effective voltage over time, both the maximum negative pore water pressure and final drainage decrease, which is consistent with field observations.</description><subject>Consolidation</subject><subject>Coupled deformation</subject><subject>Deformation</subject><subject>Discharge</subject><subject>Effective voltage</subject><subject>Electric potential</subject><subject>Electro-osmotic consolidation</subject><subject>Exact solutions</subject><subject>Hydrostatic pressure</subject><subject>Laboratory tests</subject><subject>Matric suction</subject><subject>Nonlinearity</subject><subject>Permeability</subject><subject>Pore pressure</subject><subject>Pore water</subject><subject>Pore water pressure</subject><subject>Shrinkage</subject><subject>Soil</subject><subject>Soil mechanics</subject><subject>Soil permeability</subject><subject>Soil shrinkage</subject><subject>Soil suction</subject><subject>Soils</subject><subject>Unsaturated soils</subject><subject>Voltage</subject><subject>Water pressure</subject><issn>0266-352X</issn><issn>1873-7633</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkE1qwzAQhUVpoWnaIxQEXTu1pFi2VyWE_kGgmyy6E7I0ihVsK5XklFyjJ66SdN_ZDMx87w3zELon-YzkhD9uZ8r1uw24Gc0pSbN5XuQXaEKqkmUlZ-wSTXLKecYK-nmNbkLY5klXV_UE_Sxwe9DeZT2oVg5WyQ4rN-460Di4bozWDdg4j6EDFRPnQu-iVQka0t5qeSLsgMchyDh6GU9K24UTYjV4O2xwbAFrUB5kgCMNxiQ_uwe8d12UG8DfNrY42h5u0ZWRXYC7vz5F65fn9fItW328vi8Xq0wxVsaM1lQS3hBtgOoGygpoU4ORVWGMNGVNGW-qpuSUmZo0mhZzDqm0Ng2dq4JN0cPZdufd1wghiq0b_ZAuClrQmlFKKp6o4kwp70LwYMTO2176gyC5OKYvtuIvfXFMX5zTT7qnsw7SB3sLXgRlYVCgrU-PC-3sPw6_UXuVxg</recordid><startdate>202105</startdate><enddate>202105</enddate><creator>Wang, Liujiang</creator><creator>Shen, Chaomin</creator><creator>Liu, Sihong</creator><creator>Alonso, Eduardo</creator><creator>Huang, Penghua</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>JQ2</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>202105</creationdate><title>A hydro-mechanical coupled solution for electro-osmotic consolidation in unsaturated soils considering the decrease in effective voltage with time</title><author>Wang, Liujiang ; Shen, Chaomin ; Liu, Sihong ; Alonso, Eduardo ; Huang, Penghua</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-292a16b1dfe2dbe78e2b9efa85ffaf79236b8b7623f91bd2546eeeeddfb24c53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Consolidation</topic><topic>Coupled deformation</topic><topic>Deformation</topic><topic>Discharge</topic><topic>Effective voltage</topic><topic>Electric potential</topic><topic>Electro-osmotic consolidation</topic><topic>Exact solutions</topic><topic>Hydrostatic pressure</topic><topic>Laboratory tests</topic><topic>Matric suction</topic><topic>Nonlinearity</topic><topic>Permeability</topic><topic>Pore pressure</topic><topic>Pore water</topic><topic>Pore water pressure</topic><topic>Shrinkage</topic><topic>Soil</topic><topic>Soil mechanics</topic><topic>Soil permeability</topic><topic>Soil shrinkage</topic><topic>Soil suction</topic><topic>Soils</topic><topic>Unsaturated soils</topic><topic>Voltage</topic><topic>Water pressure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Liujiang</creatorcontrib><creatorcontrib>Shen, Chaomin</creatorcontrib><creatorcontrib>Liu, Sihong</creatorcontrib><creatorcontrib>Alonso, Eduardo</creatorcontrib><creatorcontrib>Huang, Penghua</creatorcontrib><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>Computers and geotechnics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Liujiang</au><au>Shen, Chaomin</au><au>Liu, Sihong</au><au>Alonso, Eduardo</au><au>Huang, Penghua</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A hydro-mechanical coupled solution for electro-osmotic consolidation in unsaturated soils considering the decrease in effective voltage with time</atitle><jtitle>Computers and geotechnics</jtitle><date>2021-05</date><risdate>2021</risdate><volume>133</volume><spage>104050</spage><pages>104050-</pages><artnum>104050</artnum><issn>0266-352X</issn><eissn>1873-7633</eissn><abstract>For electro-osmotic consolidation in unsaturated soils, coupled deformation, inconsistent changes in hydraulic conductivity and electro-osmotic permeability with matric suction, and a decrease in effective voltage with time occur simultaneously. To consider all of these processes, an analytical solution was proposed. The time-stepping method was adopted in the calculation of the solution to depict the nonlinear change in shrinkage deformation with matric suction. The accuracy of the proposed analytical solution was validated by comparison with results from laboratory tests and from a previously presented solution without considering coupled deformation. Then, a parametric study was conducted. The results indicate that the dissipation of the pore water pressure is slow when considering coupled deformation, but a large volume of water is discharged in the end, especially for soils with a large volumetric shrinkage index Cm. A larger final negative pore water pressure and discharged water can be predicted by considering the inconsistent changes in hydraulic conductivity and electro-osmotic permeability. Finally, with the consideration of the decrease in effective voltage over time, both the maximum negative pore water pressure and final drainage decrease, which is consistent with field observations.</abstract><cop>New York</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.compgeo.2021.104050</doi></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Consolidation Coupled deformation Deformation Discharge Effective voltage Electric potential Electro-osmotic consolidation Exact solutions Hydrostatic pressure Laboratory tests Matric suction Nonlinearity Permeability Pore pressure Pore water Pore water pressure Shrinkage Soil Soil mechanics Soil permeability Soil shrinkage Soil suction Soils Unsaturated soils Voltage Water pressure |
| title | A hydro-mechanical coupled solution for electro-osmotic consolidation in unsaturated soils considering the decrease in effective voltage with time |
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