Open Access. Powered by Scholars. Published by Universities.®
Civil and Environmental Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Publication
- Publication Type
Articles 1 - 4 of 4
Full-Text Articles in Civil and Environmental Engineering
Development Of A New Electro-Osmotic Consolidation Apparatus, Yenni Mariana Ramírez-Mazo, Juan Pablo Osorio, Sergio Agudelo
Development Of A New Electro-Osmotic Consolidation Apparatus, Yenni Mariana Ramírez-Mazo, Juan Pablo Osorio, Sergio Agudelo
Conference papers
Electro-osmotic consolidation is a ground improvement technique in which a DC voltage is applied to the soil via electrodes, in order to drain the water contained in the pores increasing the effective stress, and thus improving the geotechnical properties of the soil. The technique increases the shear strength, reduces the compressibility, and changes the chemical composition of the saturated soft clayey and silty soils to which it can be applied. Electro-osmotic consolidation has been successfully applied in different projects worldwide. This paper presents the development of a new electro-osmotic consolidation apparatus built at Universidad de Antioquia. Tests were carried on …
Analysis Of Deformation Mechanism Of Soft Soil Reinforcement By Vacuum Preloading, Li-Wen Hu, Zhi-Jun Liu
Analysis Of Deformation Mechanism Of Soft Soil Reinforcement By Vacuum Preloading, Li-Wen Hu, Zhi-Jun Liu
Rock and Soil Mechanics
Based on the changes of total stress and pore water pressure in the spring model, the mechanism of vacuum preloading consolidation is studied by theoretically discussing the consolidation behavior of soil in vertical and horizontal directions with different boundary conditions. The variation of effective stress and development of deformation are analyzed for the soil under vacuum preloading under stress paths of K0 consolidation and isotropic consolidation based on the boundary conditions, respectively. Meanwhile, the theoretical earth pressure coefficient (K0MC) at rest for soft soil is deduced based on modified Cam-clay model. With engineering applications, the correctness and effectiveness of the …
Soil Improvement By Electro-Osmotic Consolidation: Laboratory Testing, Yenni Mariana Ramírez-Mazo, Juan Pablo Osorio, Sergio C. Agudelo-Flórez
Soil Improvement By Electro-Osmotic Consolidation: Laboratory Testing, Yenni Mariana Ramírez-Mazo, Juan Pablo Osorio, Sergio C. Agudelo-Flórez
Conference papers
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 …
Physical Modeling Study On Treatment Of Waste Slurry With Vacuum Preloading At Bottom Combined With Upper Surcharge Loading, Liang-Tong Zhan, Bin Zhang, Xiao-Gang Guo, Wen-Hao Jiang
Physical Modeling Study On Treatment Of Waste Slurry With Vacuum Preloading At Bottom Combined With Upper Surcharge Loading, Liang-Tong Zhan, Bin Zhang, Xiao-Gang Guo, Wen-Hao Jiang
Rock and Soil Mechanics
To solve the safety problem of using waste slurry to backfill discarded open pit mine, the treatment method of vacuum preloading at bottom combined with upper surcharge loading is implemented in the model test. The feasibility of using this method in the backfilling of discarded open pit mine is discussed. The test results show that the proposed method can significantly reduce the water content of the slurry and increase the shear strength of the soil. The water content of the slurry reduces from 450% to 95%–105%, and the reduction of volume reaches 73.4%. The undrained shear strength increases from zero …