Model test study of a novel vacuum preloading method

Author(s):  
Shu Xiaowu ◽  
Guo Bingchuan ◽  
Song Xiaoxian
2011 ◽  
Vol 243-249 ◽  
pp. 3277-3284
Author(s):  
Qi Jun Hu ◽  
Hua Wen ◽  
Cheng Gong

This paper verified effect and feasibility by indoor model test of using drainage of vacuum preloading method and electro-osmosis method to reduce water content of saturated over-wet soil in moist and rainy areas. The results showed that: both methods could effectively reduce water content of saturated over-wet soil in Ya’an area, to achieve the desired effect of drainage and consolidation. Neither spatial distribution of level of reducing water content was obvious.


2015 ◽  
Vol 52 (6) ◽  
pp. 485-493 ◽  
Author(s):  
Dae Hyuk Kim ◽  
Inn-Duk Seo ◽  
Key-Pyo Rhee ◽  
Nakwan Kim ◽  
Jin-Hyung Ahn
Keyword(s):  

2015 ◽  
Vol 74 (4) ◽  
pp. 3315-3332 ◽  
Author(s):  
Ping Lu ◽  
Hangbin Wu ◽  
Gang Qiao ◽  
Weiyue Li ◽  
Marco Scaioni ◽  
...  

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Mantu Majumder ◽  
Debarghya Chakraborty ◽  
Vishal Kumawat
Keyword(s):  

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Yang Jiao ◽  
Jia He ◽  
Peiyuan Zhou ◽  
Ziqian Cao

When soil slurry is used as a fill material in land reclamation projects, vacuum preloading or geotextile tube systems are often adopted for the dewatering treatment in a large scale. However, these two methods often suffer from clogging problems and impede further dewatering treatment. In this study, we test the potential of using flocculants to enhance the dewatering efficiency in a vacuum preloading model test and a geotextile tube model test. Experimental results show that, by adding a flocculant into soil slurry, the dewatering efficiency in terms of drainage volumes and rates is significantly improved as compared to that in pure soil slurry. The amounts of drainage water in the tests with flocculant addition are about 20% and 100% more than those in pure slurry tests in the vacuum preloading and geotextile tube model tests, respectively. The underlying reason could be the flocculation effect that prevents the movement of small soil grains and the formation of impermeable layers on the filters.


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