Quantitative comparison between settlement observed in MSW biodegradation and sand-salt dissolution tests
The in situ and laboratory MSW biodegradation is a long-term process, thus the assessment of its performance can be arduous. A sand-salt mixture is often used to replace an MSW specimen for simplification or approximation, with dissolution representing biodegradation. However, the effectiveness o...
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| Main Authors: | , , |
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| 其他作者: | |
| 格式: | Conference or Workshop Item |
| 語言: | English |
| 出版: |
2023
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/166495 https://www.issmge.org/publications/publication/quantitative-comparison-between-settlement-observed-in-msw-biodegradation-and-sand-salt-dissolution-tests |
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| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | The in situ and laboratory MSW biodegradation is a long-term process, thus the assessment of its
performance can be arduous. A sand-salt mixture is often used to replace an MSW specimen for
simplification or approximation, with dissolution representing biodegradation. However, the
effectiveness of this approximation still needs to be confirmed, and the effects of the initial properties
and test conditions such as unstable fraction, size ratio, initial compaction, and vertical stress on the
accuracy of this approximation are unknown. In this study, supplementary dissolution tests of sand-salt
mixtures are first conducted to construct a dataset for sand-salt mixtures and MSW specimens. Then,
the settlement, one of the most important characteristics in practice, is chosen to be the indicator to
compare the suitability of this approximation based on test groups with different unstable fractions, while
the effects of other initial properties and conditions are also investigated. Overall, the effectiveness of
the approximation largely depends on the biodegradable fraction and salt fraction, while other properties
only pose limited effects. |
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