Physical parameters of test material.
<div><p>This study systematically investigates the effects of two hydraulic pathways—wetting followed by loading (W-L) and loading followed by wetting (L-W)—on the water retention and strength characteristics of intact loess from a Xi’an metro line. Using an improved unsaturated triaxial...
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| مؤلفون آخرون: | , , , |
| منشور في: |
2025
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| _version_ | 1852015258142507008 |
|---|---|
| author | Weiye Fu (22537728) |
| author2 | Shengjun Shao (17184337) Aizhong Luo (22537731) Tao Li (86810) Zijun Zhao (9319616) |
| author2_role | author author author author |
| author_facet | Weiye Fu (22537728) Shengjun Shao (17184337) Aizhong Luo (22537731) Tao Li (86810) Zijun Zhao (9319616) |
| author_role | author |
| dc.creator.none.fl_str_mv | Weiye Fu (22537728) Shengjun Shao (17184337) Aizhong Luo (22537731) Tao Li (86810) Zijun Zhao (9319616) |
| dc.date.none.fl_str_mv | 2025-10-31T17:40:30Z |
| dc.identifier.none.fl_str_mv | 10.1371/journal.pone.0334874.t001 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/dataset/Physical_parameters_of_test_material_/30503317 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Biochemistry Science Policy Space Science Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified study systematically investigates scanning electron microscopy net confining pressure shear stress levels partial cement fragmentation critical state line water retention behavior hydraulic effects must unsaturated intact loess w pathway exhibits div >< p >< sub xmlns water retention intact loess shear strength cement dissolution metro line loess strength xi ’ w )— suction ratio suction contribution strength characteristics measurable refinement lower slope linear relationship l pathway failure characteristics controlled suction analysis combined |
| dc.title.none.fl_str_mv | Physical parameters of test material. |
| dc.type.none.fl_str_mv | Dataset info:eu-repo/semantics/publishedVersion dataset |
| description | <div><p>This study systematically investigates the effects of two hydraulic pathways—wetting followed by loading (W-L) and loading followed by wetting (L-W)—on the water retention and strength characteristics of intact loess from a Xi’an metro line. Using an improved unsaturated triaxial testing system, experiments were conducted under controlled suction, net confining pressure, and shear stress levels. The Van Genuchten model accurately describes the water retention behavior, with the saturation-suction ratio (s/<i><i>S</i></i><sub>c</sub>) exhibiting a linear relationship. The Critical State Line (CSL) for the L-W pathway exhibits a lower slope than that for the W-L pathway, indicating a reduction in shear strength and that hydraulic pathways strongly influence the suction contribution to loess strength. A threshold line in the <i><i>q-p</i></i><sup>’</sup> plane is identified, suggesting that hydraulic effects must be considered when the pre-wetting stress state exceeds this threshold. Scanning electron microscopy (SEM) analysis combined with quantitative pore analysis reveals that W-L induces pore expansion and cement dissolution, while L-W promotes particle compaction, partial cement fragmentation, and a measurable refinement of the pore network.</p></div> |
| eu_rights_str_mv | openAccess |
| id | Manara_bd8501d920caa4cfb6b04872e2eedc1f |
| identifier_str_mv | 10.1371/journal.pone.0334874.t001 |
| network_acronym_str | Manara |
| network_name_str | ManaraRepo |
| oai_identifier_str | oai:figshare.com:article/30503317 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Physical parameters of test material.Weiye Fu (22537728)Shengjun Shao (17184337)Aizhong Luo (22537731)Tao Li (86810)Zijun Zhao (9319616)BiochemistryScience PolicySpace ScienceEnvironmental Sciences not elsewhere classifiedBiological Sciences not elsewhere classifiedChemical Sciences not elsewhere classifiedstudy systematically investigatesscanning electron microscopynet confining pressureshear stress levelspartial cement fragmentationcritical state linewater retention behaviorhydraulic effects mustunsaturated intact loessw pathway exhibitsdiv >< p>< sub xmlnswater retentionintact loessshear strengthcement dissolutionmetro lineloess strengthxi ’w )—suction ratiosuction contributionstrength characteristicsmeasurable refinementlower slopelinear relationshipl pathwayfailure characteristicscontrolled suctionanalysis combined<div><p>This study systematically investigates the effects of two hydraulic pathways—wetting followed by loading (W-L) and loading followed by wetting (L-W)—on the water retention and strength characteristics of intact loess from a Xi’an metro line. Using an improved unsaturated triaxial testing system, experiments were conducted under controlled suction, net confining pressure, and shear stress levels. The Van Genuchten model accurately describes the water retention behavior, with the saturation-suction ratio (s/<i><i>S</i></i><sub>c</sub>) exhibiting a linear relationship. The Critical State Line (CSL) for the L-W pathway exhibits a lower slope than that for the W-L pathway, indicating a reduction in shear strength and that hydraulic pathways strongly influence the suction contribution to loess strength. A threshold line in the <i><i>q-p</i></i><sup>’</sup> plane is identified, suggesting that hydraulic effects must be considered when the pre-wetting stress state exceeds this threshold. Scanning electron microscopy (SEM) analysis combined with quantitative pore analysis reveals that W-L induces pore expansion and cement dissolution, while L-W promotes particle compaction, partial cement fragmentation, and a measurable refinement of the pore network.</p></div>2025-10-31T17:40:30ZDatasetinfo:eu-repo/semantics/publishedVersiondataset10.1371/journal.pone.0334874.t001https://figshare.com/articles/dataset/Physical_parameters_of_test_material_/30503317CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/305033172025-10-31T17:40:30Z |
| spellingShingle | Physical parameters of test material. Weiye Fu (22537728) Biochemistry Science Policy Space Science Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified study systematically investigates scanning electron microscopy net confining pressure shear stress levels partial cement fragmentation critical state line water retention behavior hydraulic effects must unsaturated intact loess w pathway exhibits div >< p >< sub xmlns water retention intact loess shear strength cement dissolution metro line loess strength xi ’ w )— suction ratio suction contribution strength characteristics measurable refinement lower slope linear relationship l pathway failure characteristics controlled suction analysis combined |
| status_str | publishedVersion |
| title | Physical parameters of test material. |
| title_full | Physical parameters of test material. |
| title_fullStr | Physical parameters of test material. |
| title_full_unstemmed | Physical parameters of test material. |
| title_short | Physical parameters of test material. |
| title_sort | Physical parameters of test material. |
| topic | Biochemistry Science Policy Space Science Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified study systematically investigates scanning electron microscopy net confining pressure shear stress levels partial cement fragmentation critical state line water retention behavior hydraulic effects must unsaturated intact loess w pathway exhibits div >< p >< sub xmlns water retention intact loess shear strength cement dissolution metro line loess strength xi ’ w )— suction ratio suction contribution strength characteristics measurable refinement lower slope linear relationship l pathway failure characteristics controlled suction analysis combined |