Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay
In the case of cement-stabilized soils cured under the influence of overburden stress, it is necessary to consider two different timelines of cementation and consolidation, along which the structures of stabilized soils evolve. These two timelines are interrelated and ought not to be considered sepa...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Soils and Foundations |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080621000615 |
| _version_ | 1818364890098696192 |
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| author | Toshihide Shibi Yuki Ohtsuka |
| author_facet | Toshihide Shibi Yuki Ohtsuka |
| author_sort | Toshihide Shibi |
| collection | DOAJ |
| description | In the case of cement-stabilized soils cured under the influence of overburden stress, it is necessary to consider two different timelines of cementation and consolidation, along which the structures of stabilized soils evolve. These two timelines are interrelated and ought not to be considered separately, especially in the early stage of curing when significant structural changes occur. In this study, the strength and deformation characteristics of cement-stabilized clay subjected to overburden stress during curing was investigated using an unconfined compression test apparatus. For this purpose, three types of specimens were prepared by stabilizing very soft clay with different amounts of cement. Overburden stress was applied for three different time durations during curing. In the series of unconfined compression tests conducted on the specimens with no overburden stress applied during curing, the axial stress initially increases rapidly, then was maintained before finally dropping. In the series of tests with overburden stress applied during curing, the axial stress continues to increase gradually before rapidly declining. The values of unconfined compressive strength are larger for the specimens subjected to overburden stress during curing. The values of the unconfined compressive strength also increase linearly as the duration of applied overburden stress increases. The increase in strength apparently occurs due to increasing dry density accompanied by a decrease in the water content due to the drainage of pore water during the application of overburden stress. |
| first_indexed | 2024-12-13T22:11:33Z |
| format | Article |
| id | doaj.art-05002e8c9449488fbd0130631ac12e3d |
| institution | Directory Open Access Journal |
| issn | 2524-1788 |
| language | English |
| last_indexed | 2024-12-13T22:11:33Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj.art-05002e8c9449488fbd0130631ac12e3d2022-12-21T23:29:42ZengElsevierSoils and Foundations2524-17882021-08-0161411231131Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clayToshihide Shibi0Yuki Ohtsuka1Shimane University, Graduate School of Natural Science and Technology, Institute of Environmental System Science, Nishikawatsu 1060, Matsue, Shimane 690-8504, Japan; Corresponding author.Hiroshima Prefectural Office, 10-52, Motomachi, Naka-ku, Hiroshima, Hiroshima 730-8511, JapanIn the case of cement-stabilized soils cured under the influence of overburden stress, it is necessary to consider two different timelines of cementation and consolidation, along which the structures of stabilized soils evolve. These two timelines are interrelated and ought not to be considered separately, especially in the early stage of curing when significant structural changes occur. In this study, the strength and deformation characteristics of cement-stabilized clay subjected to overburden stress during curing was investigated using an unconfined compression test apparatus. For this purpose, three types of specimens were prepared by stabilizing very soft clay with different amounts of cement. Overburden stress was applied for three different time durations during curing. In the series of unconfined compression tests conducted on the specimens with no overburden stress applied during curing, the axial stress initially increases rapidly, then was maintained before finally dropping. In the series of tests with overburden stress applied during curing, the axial stress continues to increase gradually before rapidly declining. The values of unconfined compressive strength are larger for the specimens subjected to overburden stress during curing. The values of the unconfined compressive strength also increase linearly as the duration of applied overburden stress increases. The increase in strength apparently occurs due to increasing dry density accompanied by a decrease in the water content due to the drainage of pore water during the application of overburden stress.http://www.sciencedirect.com/science/article/pii/S0038080621000615Cement-stabilized soilConsolidationCuringUnconfined compressive strengthWater content |
| spellingShingle | Toshihide Shibi Yuki Ohtsuka Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay Soils and Foundations Cement-stabilized soil Consolidation Curing Unconfined compressive strength Water content |
| title | Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay |
| title_full | Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay |
| title_fullStr | Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay |
| title_full_unstemmed | Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay |
| title_short | Influence of applying overburden stress during curing on the unconfined compressive strength of cement-stabilized clay |
| title_sort | influence of applying overburden stress during curing on the unconfined compressive strength of cement stabilized clay |
| topic | Cement-stabilized soil Consolidation Curing Unconfined compressive strength Water content |
| url | http://www.sciencedirect.com/science/article/pii/S0038080621000615 |
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