Influence of Gluing-Solution Layout on Gluing-Solution Distribution in a Realistic Railway Ballast
Publication: International Journal of Geomechanics
Volume 17, Issue 3
Abstract
In this article, the influence of gluing-solution layout on the gluing-solution distribution at the final stage of solidification process in a realistic railway ballast is investigated. A unified Cauchy stress model, with an asymptotic time-dependent viscosity, is proposed to account for the coupled antithixotropic and shear-thickening features of gluing solutions. Realistic railway ballast is accomplished by using the vertex-identification technique, in which regulations for gravel composition in ballast practice are followed. A network and matrix layouts of gluing solution are applied. Flow characteristics and time-dependent solidification of the gluing solution in the multiconnected conducts spanned by the gravels are simulated by using a finite-element code. Although more concrete lateral and vertical gluing adhesions among the gravels can be accomplished by spreading gluing solution in the network arrangement, the gluing-solution distribution obtained by pouring gluing solution in the matrix layout is relatively localized and limited. For a better pointwise gravel–gravel adhesion, gluing solution in a network arrangement is pronounced to be an a priori gluing practice.
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Acknowledgments
The authors are indebted to the Ministry of Science and Technology, Taiwan, for financial support via Project MOST 104–2221–E–006–198–. The authors also thank the editor and reviewers for their suggestions, which led to improvements.
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Information & Authors
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Published In
International Journal of Geomechanics
Volume 17 • Issue 3 • March 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jan 27, 2016
Accepted: Jun 20, 2016
Published online: Aug 25, 2016
Discussion open until: Jan 25, 2017
Published in print: Mar 1, 2017
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