Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin
Collapsible soils, including loess, can support heavy loads at their natural humidity but then collapse rapidly and lose a substantial volume when the humidity increases. Soil collapse potential at different immersion stresses was investigated according to ASTM D5333. Different immersion stresses,...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2023-12-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9551 |
| _version_ | 1797364527493283840 |
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| author | Mohammad Ali Khodabandeh Katalin Kopecskó Gábor Nagy |
| author_facet | Mohammad Ali Khodabandeh Katalin Kopecskó Gábor Nagy |
| author_sort | Mohammad Ali Khodabandeh |
| collection | DOAJ |
| description |
Collapsible soils, including loess, can support heavy loads at their natural humidity but then collapse rapidly and lose a substantial volume when the humidity increases. Soil collapse potential at different immersion stresses was investigated according to ASTM D5333. Different immersion stresses, including 100, 200, 300, 400, and 500 kPa, were used to evaluate the stress-strain behavior of soils before and after saturation. The results indicated that soil collapse potential rose with a raising of immersion stress, resulting in the highest soil collapse potential at 500 kPa immersion stress. Furthermore, the effectiveness of expanded perlite and metakaolin in treating loess soils was examined. The results revealed that the soil collapse potential reduced with an increase in perlite and metakaolin up to 8 %. Also, perlite had a more significant impact on the soil collapse potential than metakaolin. The interlocking force between soil particles was enhanced as the perlite quantity rose, and perlite prohibited soil particles from slipping on each other. Metakaolin decreased the soil collapsibility due to the pozzolanic and chemical reactions which increased particle bonding. The ultrasonic pulse velocity of soils decreased as the percentage of perlite increased. Because the perlite was not spread homogeneously, and the waves can be stuck in the heterogeneities, Metakaolin acted as a filler and increased the ultrasonic pulse velocity of the soils.
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| first_indexed | 2024-03-08T16:37:33Z |
| format | Article |
| id | doaj.art-c17e3dfd74de483882434fbcf56fbe55 |
| institution | Directory Open Access Journal |
| issn | 2336-5382 |
| language | English |
| last_indexed | 2024-03-08T16:37:33Z |
| publishDate | 2023-12-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj.art-c17e3dfd74de483882434fbcf56fbe552024-01-05T15:17:59ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822023-12-014510.14311/APP.2023.45.0045Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolinMohammad Ali Khodabandeh0Katalin Kopecskó1Gábor Nagy2Budapest University of Technology and Economics, Faculty of Civil Engineering, Department of Engineering Geology and Geotechnics, H-1111 Budapest, Müegyetem rkp. 3., HungaryBudapest University of Technology and Economics, Faculty of Civil Engineering, Department of Engineering Geology and Geotechnics, H-1111 Budapest, Müegyetem rkp. 3., HungaryBudapest University of Technology and Economics, Faculty of Civil Engineering, Department of Engineering Geology and Geotechnics, H-1111 Budapest, Müegyetem rkp. 3., Hungary Collapsible soils, including loess, can support heavy loads at their natural humidity but then collapse rapidly and lose a substantial volume when the humidity increases. Soil collapse potential at different immersion stresses was investigated according to ASTM D5333. Different immersion stresses, including 100, 200, 300, 400, and 500 kPa, were used to evaluate the stress-strain behavior of soils before and after saturation. The results indicated that soil collapse potential rose with a raising of immersion stress, resulting in the highest soil collapse potential at 500 kPa immersion stress. Furthermore, the effectiveness of expanded perlite and metakaolin in treating loess soils was examined. The results revealed that the soil collapse potential reduced with an increase in perlite and metakaolin up to 8 %. Also, perlite had a more significant impact on the soil collapse potential than metakaolin. The interlocking force between soil particles was enhanced as the perlite quantity rose, and perlite prohibited soil particles from slipping on each other. Metakaolin decreased the soil collapsibility due to the pozzolanic and chemical reactions which increased particle bonding. The ultrasonic pulse velocity of soils decreased as the percentage of perlite increased. Because the perlite was not spread homogeneously, and the waves can be stuck in the heterogeneities, Metakaolin acted as a filler and increased the ultrasonic pulse velocity of the soils. https://ojs.cvut.cz/ojs/index.php/APP/article/view/9551collapse potentialcollapsible soilexpanded perliteloessmetakaolinstabilization |
| spellingShingle | Mohammad Ali Khodabandeh Katalin Kopecskó Gábor Nagy Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin Acta Polytechnica CTU Proceedings collapse potential collapsible soil expanded perlite loess metakaolin stabilization |
| title | Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin |
| title_full | Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin |
| title_fullStr | Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin |
| title_full_unstemmed | Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin |
| title_short | Collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin |
| title_sort | collapse potential and ultrasonic pulse velocity of loess soils after treatment with expanded perlite and metakaolin |
| topic | collapse potential collapsible soil expanded perlite loess metakaolin stabilization |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9551 |
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