scholarly journals Geotextile tube application on beach refurbishment in UAE

2013 ◽  
Author(s):  
A. Chien ◽  
F. Tseng ◽  
A. Tang
Keyword(s):  
Geotextile Tube ◽  
Tube Application

scholarly journals Potential of Flocculant-Aided Soil Slurry Dewatering in Land Reclamation: Laboratory Investigations

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Yang Jiao ◽  
Jia He ◽  
Peiyuan Zhou ◽  
Ziqian Cao
Keyword(s):  
Model Test ◽  
Large Scale ◽  
Land Reclamation ◽  
Drainage Water ◽  
Tube Model ◽  
Soil Slurry ◽  
Vacuum Preloading ◽  
Geotextile Tube ◽  
Laboratory Investigations ◽  
Flocculation Effect

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.

scholarly journals Semiempirical Model for Assessing Dewatering Process by Flocculation of Dredged Sludge in an Artificial Reservoir

2020 ◽  
Vol 10 (9) ◽  
pp. 3051 ◽  
Author(s):  
Bruno Molino ◽  
Gennaro Bufalo ◽  
Annamaria De Vincenzo ◽  
Luigi Ambrosone
Keyword(s):  
Particle Size ◽  
Clay Material ◽  
Semiempirical Model ◽  
Stage Model ◽  
Artificial Reservoir ◽  
Sediment Removal ◽  
Geotextile Tube ◽  
Planning Project ◽  
Dredged Sludge ◽  
Semi Empirical

Understanding sedimentation behaviour of clay material is crucial in planning project for sediment removal from bottom of a reservoir. The sedimentation of samples taken from Occhito reservoir ( Italy) is investigated. Samples containing and not containing polyacrylamide have been monitored. Results reveal that polymer induces bridging flocculation and the particle-size distribution tends to become uniform. The sedimentation profiles follow a mater curve. Such experimental observation is used to develop a semi-empirical model for assessment of dewatering process by flocculation of dredged sludge in artificial reservoir. A two-step stage model for assessing the volume of solids in a geotextile tube is suggested. Such model is based on the idea that for very long dewatering times solids reach the configuration of free sedimentation.

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