Performance of Cement Asphalt Mortar in Ballastless Slab Track over High-Speed Railway under Extreme Climate Conditions
Publication: International Journal of Geomechanics
Volume 19, Issue 5
Abstract
The cement asphalt (CA) mortar layer acts as the key component of the China Railway Track System II (CRTS-II) type ballastless slab track to ensure stability, durability, and cost maintenance. However, it was found to be easily degraded during operation, particularly under extreme climate conditions. In this paper, to study the performance of CA mortar under extreme temperatures, flexural strength and fatigue tests were conducted to evaluate its mechanical properties. Moreover, the stress and deformation of the track under different temperature loads were analyzed based on the temperature fields, which were simulated through a transient thermal analysis. The results show that the flexural strength and fatigue life are reduced by high temperatures, and the highest possible temperature on the surface of the track can reach 58.8°C in China. The maximum principle stress can reach 1.2 MPa under the negative temperature gradient load, which is three times larger than under the train load and is close to the flexural strength obtained from the tests. As a result, the degradation of CA mortar is mainly caused by the increase of the stress and the deterioration of the tensile capacity induced by the extreme climate.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
We gratefully acknowledge the financial support of the Zhejiang Provincial Natural Science Foundation of China (Grant LZ16E08001) and the National Natural Science Foundation of China (Grant 51578496).
References
Chen, W., J. Yin, W. Feng, L. Borana, and R. Chen. 2018. “Accumulated permanent axial strain of a subgrade fill under cyclic high-speed railway loading.” Int. J. Geomech. 18 (5): 04018018. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001119.
Esveld, C. 2003. “Recent developments in slab track.” Eur. Railway Rev. 2: 81–85.
Fu, Q., Y. J. Xie, G. C. Long, F. Meng, and H. Song. 2015. “Temperature sensitivity and model of stress relaxation properties of cement and asphalt mortar.” Constr. Build. Mater. 84 (Jun): 1–11. https://doi.org/10.1016/j.conbuildmat.2015.03.064.
Gandi, A., A. Carter, and D. Singh. 2017. “Rheological behavior of cold recycled asphalt materials with different contents of recycled asphalt pavements.” Innovative Infrastruct. Solutions 2 (1): 45. https://doi.org/10.1007/s41062-017-0094-3.
Harada, Y., S. Tottori, and N. Itai. 1983. “Development of cement asphalt mortar for slab tracks in cold climate.” Railway Tech. Res. Inst. Q. Rep. 24 (2): 62–67.
Hu, S. G., T. Wang, F. Z. Wang, and Z. C. Liu. 2009. “Adsorption behaviour between cement and asphalt emulsion in cement-asphalt mortar.” Adv. Cem. Res. 21 (1): 11–14. https://doi.org/10.1680/adcr.2007.00034.
Kehlbeck, F. 1981. Effect of solar radiation on the bridge structure. Beijing: China Railway Press.
Kolos, A. F., T. M. Petrova, and A. O. Makhonina. 2017. “Full-scale study of stress-strain state of ballastless upper structure construction of railway in terms of train dynamic load.” Procedia Eng. 189: 429–433. https://doi.org/10.1016/j.proeng.2017.05.068.
Minhoto, M. J. C., J. C. Pais, P. A. A. Pereira, and L. G. Picado-Santos. 2005. “Predicting asphalt pavement temperature with a three-dimensional finite element method.” Transp. Res. Rec. 1919 (1): 96–110. https://doi.org/10.1177/0361198105191900111.
National Highway Administration. 2014. Code of Design of High Speed Railway. TB10621-2014. Beijing: National Highway Administration.
Qiu, K. C., H. S. Chen, H. P. Ye, J. X. Hong, W. Sun, and J. Y. Jiang. 2013. “Thermo-mechanical coupling effect on fatigue behavior of cement asphalt mortar.” Int. J. Fatigue 51 (Jun): 116–120. https://doi.org/10.1016/j.ijfatigue.2013.01.001.
Rutherford, T., Z. J. Wang, X. Shu, B. S. Huang, and D. Clarke. 2014. “Laboratory investigation into mechanical properties of cement emulsified asphalt mortar.” Constr. Build. Mater. 65 (Aug): 76–83. https://doi.org/10.1016/j.conbuildmat.2014.04.113.
Saetta, A., R. Scotta, and R. Vitaliani. 1995. “Stress analysis of concrete structure subjected to variable thermal loads.” J. Struct. Eng. 121 (3): 446–457. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:3(446).
Tan, P., J. E. Ma, J. Zhou, and Y. T. Fang. 2016. “Sustainability development strategy of China’s high speed rail.” J. Zhejiang Univ.-Sci. A 17 (12): 923–932. https://doi.org/10.1631/jzus.A1600747.
Wang, F. Z., Y. H. Zhang, Y. P. Liu, T. Gao, J. Z. Zou, and L. Chen. 2009. “Preliminary study on asphalt emulsion used in cement asphalt mortar.” J. Test. Eval. 37 (5): 483–485.
Yan, Z. R. 1984. “Analysis of the temperature field in layered pavement system.” [In Chinese.] J. Tongji Univ. 3: 79–88.
Yang, R., J. Li, W. Kang, X. Liu, and S. Cao. 2017. “Temperature characteristics analysis of the ballastless track under continuous hot weather.” J. Transp. Eng., Part A: Systems 143 (9): 04017048. https://doi.org/10.1061/JTEPBS.0000076.
Zhang, N., S. Zhou, H. Xia, and L. Sun. 2014. “Evaluation of vehicle-track-bridge interacted system for the continuous CRTS-II non-ballast track slab.” Sci. China-Technol. Sci. 57 (10): 1895–1901. https://doi.org/10.1007/s11431-014-5637-7.
Zhu, J., and Q. Meng. 2017. “Effective and fine analysis for temperature effect of bridges in natural environments.” J. Bridge Eng. 22 (6): 04017017. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001039.
Zhu, S. Y., and C. B. Cai. 2014. “Interface damage and its effect on vibrations of slab track under temperature and vehicle dynamic loads.” Int. J. Non Linear Mech. 58 (Jan): 222–232. https://doi.org/10.1016/j.ijnonlinmec.2013.10.004.
Information & Authors
Information
Published In
Copyright
© 2019 American Society of Civil Engineers.
History
Received: May 9, 2018
Accepted: Nov 29, 2018
Published online: Mar 13, 2019
Published in print: May 1, 2019
Discussion open until: Aug 13, 2019
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.