Journal article
Effect of nanomaterials and electrode configuration on soil consolidation by electroosmosis: experimental and modeling studies
RSC advances, Vol.7(20), pp.12103-12112
2017
Handle:
https://hdl.handle.net/2376/120886
Abstract
Controlling the water content in soil is crucial for the load bearing capacity of soil. In the past few decades, electroosmosis has been proved to be a versatile strategy to consolidate soil in situ. However, the efficiency of this electrochemical technique needs to be further improved for practical application. This study was designed to test the hypothesis that the incorporation of nanoparticles (NPs) during electroosmosis can significantly facilitate the migration of water molecules under an external electric field and thus improve the physical properties of the treated soil. In addition, the number of anodes per cathode was explored as another method to improve the efficiency of electroosmosis in dewatering and strengthening soil. The results from the designed laboratory experiments confirmed the benefits of increasing the number of anodes or adding positively charged SiO2@Al2O3 core–shell NPs, in increasing the dewatering rate and improving the cohesion, internal friction angle, and microstructure of the treated soil (Lake Silt). The finite element method based simulation results agreed well with the experimental observations and suggested that the NPs can promote the water migration under an electric field.
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Details
- Title
- Effect of nanomaterials and electrode configuration on soil consolidation by electroosmosis: experimental and modeling studies
- Creators
- Heng Zhang - Key Lab of Structure Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Harbin 150090, ChinaGuoxiang Zhou - School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, ChinaJing Zhong - Key Lab of Structure Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Harbin 150090, ChinaZhang Shen - School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, ChinaXianming Shi - School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China, Laboratory of Corrosion Science & Electrochemical Engineering
- Publication Details
- RSC advances, Vol.7(20), pp.12103-12112
- Academic Unit
- Civil and Environmental Engineering, Department of
- Identifiers
- 99900612706301842
- Language
- English
- Resource Type
- Journal article