Author ORCID Identifier

0000-0001-9230-6872

Document Type

Conference Paper

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

2.1 CIVIL ENGINEERING, Civil engineering, Environmental and geological engineering, Geotechnics

Abstract

Electro-osmotic consolidation is a ground improvement technique that has been successfully implemented on the field and at laboratory scale since the 30s. However, its application has been done primarily through empirical procedures and experience. The determinant variables in the effectiveness and efficiency of the improvement are numerous and require further studies. This paper presents the evaluation of the improvement process of an inorganic low plasticity clay subjected to a 150 V/m voltage during 5780 minutes. The special analysis of the strains showed differential settlements, as well as cracking at the surface and with depth. The consolidations curves obtained follow the same tendency associated with conventional consolidation. The highest strains occurred at the side of the anode, due to the induction of flow from this terminal. The volume of water expelled during the consolidation process corresponds to a 25.2% of the initial water content, expelled mainly towards the negative terminal. The water content, pH and specific gravity, increased in the surroundings of the cathode and reduce around the anode; while the opposite behavior was observed for the plasticity index.

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