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D. Ramirez Cardona^1,2, H. Di Benedetto², C. Sauzeat², Q.T. Nguyen², N. Calon¹ and A. Robinet¹

¹Direction of Engineering, SNCF, Saint-Denis, France
²Laboratory of Civil Engineering and Building, Laboratory of Tribology and System Dynamics, University of Lyon, France

doi:10.4203/ccp.104.225

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D. Ramirez Cardona, H. Di Benedetto, C. Sauzeat, Q.T. Nguyen, N. Calon, A. Robinet, "Linear Thermo-Viscoelastic Behaviour of Bituminous Mixtures used for Railway Trackbeds", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 225, 2014. doi:10.4203/ccp.104.225

Keywords: bituminous mixture, bituminous sub-ballast layer, viscoelastic behaviour, thermo-mechanical properties, complex modulus test, viscoelastic constitutive model, railway trackbed.

Summary

This paper presents a characterization of the linear thermo-viscoelastic behaviour of asphalt mixtures used in railway infrastructure. The existing models and tests for bituminous mixtures are mostly conceived for the road industry and need to be validated for railway applications. An improved 3D complex modulus test campaign was carried out on a road base bituminous mixture (GB type) used for railway subballast layer. The tests were performed on cylindrical asphalt specimens submitted to sinusoidal tension-compression loading at different frequency levels and temperatures. Linear viscoelastic modelling of the material using a 3Dimensional constitutive model, called 2S2P1D (2 Springs, 2 Parabolic, 1 Dashpot), is proposed. This model was developed in the Laboratory of Civil Engineering and Construction (LGCB) of the ENTPE, University of Lyon. The material's complex modulus and Poisson's ratio master curves are presented. The model shows to be successful in predicting the viscoelastic rheological properties of the material.

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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 225 Linear Thermo-Viscoelastic Behaviour of Bituminous Mixtures used for Railway Trackbeds D. Ramirez Cardona^1,2, H. Di Benedetto², C. Sauzeat², Q.T. Nguyen², N. Calon¹ and A. Robinet¹ ¹Direction of Engineering, SNCF, Saint-Denis, France ²Laboratory of Civil Engineering and Building, Laboratory of Tribology and System Dynamics, University of Lyon, France doi:10.4203/ccp.104.225 purchase the full-text of this paper Full Bibliographic Reference for this paper D. Ramirez Cardona, H. Di Benedetto, C. Sauzeat, Q.T. Nguyen, N. Calon, A. Robinet, "Linear Thermo-Viscoelastic Behaviour of Bituminous Mixtures used for Railway Trackbeds", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 225, 2014. doi:10.4203/ccp.104.225 Keywords: bituminous mixture, bituminous sub-ballast layer, viscoelastic behaviour, thermo-mechanical properties, complex modulus test, viscoelastic constitutive model, railway trackbed. Summary This paper presents a characterization of the linear thermo-viscoelastic behaviour of asphalt mixtures used in railway infrastructure. The existing models and tests for bituminous mixtures are mostly conceived for the road industry and need to be validated for railway applications. An improved 3D complex modulus test campaign was carried out on a road base bituminous mixture (GB type) used for railway subballast layer. The tests were performed on cylindrical asphalt specimens submitted to sinusoidal tension-compression loading at different frequency levels and temperatures. Linear viscoelastic modelling of the material using a 3Dimensional constitutive model, called 2S2P1D (2 Springs, 2 Parabolic, 1 Dashpot), is proposed. This model was developed in the Laboratory of Civil Engineering and Construction (LGCB) of the ENTPE, University of Lyon. The material's complex modulus and Poisson's ratio master curves are presented. The model shows to be successful in predicting the viscoelastic rheological properties of the material. 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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