TY - JOUR
T1 - Influence of gluing-solution layout on gluing-solution distribution in a realistic railway ballast
AU - Fang, Chung
AU - Lee, Yusin
AU - Lin, Yung Jung
AU - Lu, Li Sin
AU - Chen, Po Chen
N1 - Funding Information:
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.
Publisher Copyright:
© 2016 American Society of Civil Engineers.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - 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.
AB - 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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U2 - 10.1061/(ASCE)GM.1943-5622.0000764
DO - 10.1061/(ASCE)GM.1943-5622.0000764
M3 - Article
AN - SCOPUS:85012982884
SN - 1532-3641
VL - 17
JO - International Journal of Geomechanics
JF - International Journal of Geomechanics
IS - 3
M1 - 04016080
ER -