Influence of magnitudes of negative pressures on dewatering behavior of ultra-soft clay

Jun Tong; Noriyuki Yasufuku; Kiyoshi Omine

doi:10.3208/jgssp.CHN-36

Influence of magnitudes of negative pressures on dewatering behavior of ultra-soft clay

Jun Tong, Noriyuki Yasufuku, Kiyoshi Omine

Geotechnical Engineering

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

The vacuum and siphon dewatering tests were performed to investigate the dewatering behavior of the high moisture content ultra-soft clay, respectively. All the tests are conducted in the small-scale tanks with plastic drainage board installed horizontally at the bottom. The influence of the magnitude of the negative dewatering pressures on the dewatering behavior of the dredged slurry was investigated. The test results show that the initial dewatering efficiency shows no significant difference when the slurry exists in the slurry-like state. Thereafter the dewatering efficiency increases with the magnitude of the applied dewatering pressure. The test results also show that the corresponding compression indexes in the pressure ranges from 0 to 30 kPa and 30 to 80 kPa are 0.33, 0.3, respectively.

Original language	English
Pages	306-310
Number of pages	5
DOIs	https://doi.org/10.3208/jgssp.CHN-36
Publication status	Published - Jan 1 2015
Event	15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015 - Fukuoka, Kyushu, Japan Duration: Nov 9 2015 → Nov 13 2015

Other

Other	15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015
Country/Territory	Japan
City	Fukuoka, Kyushu
Period	11/9/15 → 11/13/15

All Science Journal Classification (ASJC) codes

Geotechnical Engineering and Engineering Geology
Soil Science

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10.3208/jgssp.CHN-36

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abstract = "The vacuum and siphon dewatering tests were performed to investigate the dewatering behavior of the high moisture content ultra-soft clay, respectively. All the tests are conducted in the small-scale tanks with plastic drainage board installed horizontally at the bottom. The influence of the magnitude of the negative dewatering pressures on the dewatering behavior of the dredged slurry was investigated. The test results show that the initial dewatering efficiency shows no significant difference when the slurry exists in the slurry-like state. Thereafter the dewatering efficiency increases with the magnitude of the applied dewatering pressure. The test results also show that the corresponding compression indexes in the pressure ranges from 0 to 30 kPa and 30 to 80 kPa are 0.33, 0.3, respectively.",

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doi = "10.3208/jgssp.CHN-36",

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AU - Yasufuku, Noriyuki

AU - Omine, Kiyoshi

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N2 - The vacuum and siphon dewatering tests were performed to investigate the dewatering behavior of the high moisture content ultra-soft clay, respectively. All the tests are conducted in the small-scale tanks with plastic drainage board installed horizontally at the bottom. The influence of the magnitude of the negative dewatering pressures on the dewatering behavior of the dredged slurry was investigated. The test results show that the initial dewatering efficiency shows no significant difference when the slurry exists in the slurry-like state. Thereafter the dewatering efficiency increases with the magnitude of the applied dewatering pressure. The test results also show that the corresponding compression indexes in the pressure ranges from 0 to 30 kPa and 30 to 80 kPa are 0.33, 0.3, respectively.

AB - The vacuum and siphon dewatering tests were performed to investigate the dewatering behavior of the high moisture content ultra-soft clay, respectively. All the tests are conducted in the small-scale tanks with plastic drainage board installed horizontally at the bottom. The influence of the magnitude of the negative dewatering pressures on the dewatering behavior of the dredged slurry was investigated. The test results show that the initial dewatering efficiency shows no significant difference when the slurry exists in the slurry-like state. Thereafter the dewatering efficiency increases with the magnitude of the applied dewatering pressure. The test results also show that the corresponding compression indexes in the pressure ranges from 0 to 30 kPa and 30 to 80 kPa are 0.33, 0.3, respectively.

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Influence of magnitudes of negative pressures on dewatering behavior of ultra-soft clay

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