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T.V. Duong¹, A.M. Tang¹, Y.-J. Cui¹, V.N. Trinh¹, J.-C. Dupla¹, N. Calon², J. Canou¹ and A. Robinet²

¹Ecole des Ponts ParisTech, Laboratoire Navier, CERMES, Cité Descartes, Champs-sur-Marne, Paris, France
²SNCF, Paris, France

doi:10.4203/ccp.104.46

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T.V. Duong, A.M. Tang, Y.-J. Cui, V.N. Trinh, J.-C. Dupla, N. Calon, J. Canou, A. Robinet, "Mechanical Behavior of Interlayer Soil in Ancient Railway Sub-Structure", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 46, 2014. doi:10.4203/ccp.104.46

Keywords: railway sub-structure, interlayer, fine particles, water content, triaxial test, permanent strain.

Summary

The study, described in this paper, deals with the effects of fines and water content on the mechanical behaviour of interlayer soil, by carrying out large-scale monotonic and cyclic triaxial tests. The results of monotonic triaxial tests show that adding more fines in the interlayer soil does not significantly change the shear strength under dry condition but drastically decreases the shear strength parameters (friction angle and cohesion) in the nearly saturated condition. The cyclic triaxial tests were carried out at various deviator stress levels. By considering the permanent axial strain at the end of application of each stress level, it is observed that in the nearly saturated condition, the higher the fines content the larger the permanent axial strain. In the case of lower water contents, an opposite trend is identified: adding fines decreases the permanent axial strain.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 46 Mechanical Behavior of Interlayer Soil in Ancient Railway Sub-Structure T.V. Duong¹, A.M. Tang¹, Y.-J. Cui¹, V.N. Trinh¹, J.-C. Dupla¹, N. Calon², J. Canou¹ and A. Robinet² ¹Ecole des Ponts ParisTech, Laboratoire Navier, CERMES, Cité Descartes, Champs-sur-Marne, Paris, France ²SNCF, Paris, France doi:10.4203/ccp.104.46 purchase the full-text of this paper Full Bibliographic Reference for this paper T.V. Duong, A.M. Tang, Y.-J. Cui, V.N. Trinh, J.-C. Dupla, N. Calon, J. Canou, A. Robinet, "Mechanical Behavior of Interlayer Soil in Ancient Railway Sub-Structure", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 46, 2014. doi:10.4203/ccp.104.46 Keywords: railway sub-structure, interlayer, fine particles, water content, triaxial test, permanent strain. Summary The study, described in this paper, deals with the effects of fines and water content on the mechanical behaviour of interlayer soil, by carrying out large-scale monotonic and cyclic triaxial tests. The results of monotonic triaxial tests show that adding more fines in the interlayer soil does not significantly change the shear strength under dry condition but drastically decreases the shear strength parameters (friction angle and cohesion) in the nearly saturated condition. The cyclic triaxial tests were carried out at various deviator stress levels. By considering the permanent axial strain at the end of application of each stress level, it is observed that in the nearly saturated condition, the higher the fines content the larger the permanent axial strain. In the case of lower water contents, an opposite trend is identified: adding fines decreases the permanent axial strain. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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