Role of initial effective stress on the thermal volume change of normally consolidated clay
This paper focuses on the results from thermal triaxial tests on normally consolidated Georgia Kaolinite. The hypothesis evaluated in this study is whether the initial mean effective stress has an impact on the thermal volume change encountered during drained heating. To that effect, specimens at th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2020-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/65/e3sconf_icegt2020_09001.pdf |
| _version_ | 1818663622517194752 |
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| author | Samarakoon Radhavi McCartney John S. |
| author_facet | Samarakoon Radhavi McCartney John S. |
| author_sort | Samarakoon Radhavi |
| collection | DOAJ |
| description | This paper focuses on the results from thermal triaxial tests on normally consolidated Georgia Kaolinite. The hypothesis evaluated in this study is whether the initial mean effective stress has an impact on the thermal volume change encountered during drained heating. To that effect, specimens at three different initial mean effective stresses were considered in this study. The clay specimens were first isotropically consolidated to a normally consolidated state, then subjected to a drained heating cooling cycle followed by further mechanical loading to higher effective stresses. The results indicate contractive volumetric strain during drained heating where the volumetric strain was found to increase with increasing initial mean effective stress. A rebound in volume was observed during subsequent cooling where the net change in volume transitioned from zero volume change of the specimen to net contraction of the specimen after a heating cooling cycle as the initial mean effective stress increased. The results indicate the need for considering the effect of initial mean effective stress when assessing in-situ heating as a method of soil improvement. |
| first_indexed | 2024-12-17T05:19:46Z |
| format | Article |
| id | doaj.art-5f0809af9bf84392a9886c34b6dff19a |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-17T05:19:46Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-5f0809af9bf84392a9886c34b6dff19a2022-12-21T22:02:00ZengEDP SciencesE3S Web of Conferences2267-12422020-01-012050900110.1051/e3sconf/202020509001e3sconf_icegt2020_09001Role of initial effective stress on the thermal volume change of normally consolidated claySamarakoon Radhavi0McCartney John S.1University of California San Diego, Department of Structural Engineering 9500 Gilman DriveUniversity of California San Diego, Department of Structural Engineering 9500 Gilman DriveThis paper focuses on the results from thermal triaxial tests on normally consolidated Georgia Kaolinite. The hypothesis evaluated in this study is whether the initial mean effective stress has an impact on the thermal volume change encountered during drained heating. To that effect, specimens at three different initial mean effective stresses were considered in this study. The clay specimens were first isotropically consolidated to a normally consolidated state, then subjected to a drained heating cooling cycle followed by further mechanical loading to higher effective stresses. The results indicate contractive volumetric strain during drained heating where the volumetric strain was found to increase with increasing initial mean effective stress. A rebound in volume was observed during subsequent cooling where the net change in volume transitioned from zero volume change of the specimen to net contraction of the specimen after a heating cooling cycle as the initial mean effective stress increased. The results indicate the need for considering the effect of initial mean effective stress when assessing in-situ heating as a method of soil improvement.https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/65/e3sconf_icegt2020_09001.pdf |
| spellingShingle | Samarakoon Radhavi McCartney John S. Role of initial effective stress on the thermal volume change of normally consolidated clay E3S Web of Conferences |
| title | Role of initial effective stress on the thermal volume change of normally consolidated clay |
| title_full | Role of initial effective stress on the thermal volume change of normally consolidated clay |
| title_fullStr | Role of initial effective stress on the thermal volume change of normally consolidated clay |
| title_full_unstemmed | Role of initial effective stress on the thermal volume change of normally consolidated clay |
| title_short | Role of initial effective stress on the thermal volume change of normally consolidated clay |
| title_sort | role of initial effective stress on the thermal volume change of normally consolidated clay |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/65/e3sconf_icegt2020_09001.pdf |
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