Interfacial Bonding Strength between Cement Asphalt Mortar and Concrete in Slab Track
Publication: Journal of Materials in Civil Engineering
Volume 31, Issue 7
Abstract
In China Railway Track System II, the bonding of a cement asphalt mortar (CA mortar) layer to concrete slabs is a decisive factor for its durability and serviceability. In this study, the interfacial bonding strength between two types of CA mortar, and (A/C, asphalt to cement ratio in mass) and the concrete slab was investigated by pull-off tests, and effects of polymer latex, expansive agent, and temperature cycles were considered. Results indicate that the bonding strength of the CA mortar at a high A/C is obviously higher than that at a low A/C. The modification by polymer latex effectively increases the bonding strength and the effect is greater at a higher A/C. Similarly, the presence of expansive agent in the CA mortar increases the bonding strength but the effect is greater at A/C of 0.2 because of a different mechanism. From the microstructural point of view, the bonding strength of the CA mortar at a lower A/C is primarily decided by the mechanical interlocking whereas the bonding strength of the CA mortar at a higher A/C is firmly related to the adhesion of asphalt binder. Temperature cycles decrease the interfacial bonding possibly due to the weakened mechanical interlocking forces at the interface caused by the mismatch deformation between the CA mortar and the concrete slab. The incorporation of polymer latex reduces the temperature sensitivity of the bonding strength at A/C of 0.6. In contrast, the inclusion of expansive agent increases the temperature sensitivity.
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Acknowledgments
The financial supports from the National Natural Science Foundation of China (Grant Nos. 51608032 and 51578056) are gratefully acknowledged.
References
Beushausen, H., and M. G. Alexander. 2008. “Bond strength development between concretes of different ages.” Mag. Concr. Res. 60 (1): 65–74. https://doi.org/10.1680/macr.2007.00108.
Gailienė, I., and A. Laurinavičius. 2017. “The need and benefit of slab track: Case of Lithuania.” Gradevinar 69 (5): 387–396. https://doi.org/10.14256/JCE.1776.2016.
Gautier, P. E. 2015. “Slab track: Review of existing systems and optimization potentials including very high speed.” Constr. Build. Mater. 92: 9–15. https://doi.org/10.1016/j.conbuildmat.2015.03.102.
Granju, J. L., V. Sabathier, A. Turatsinze, and A. Toumi. 2004. “Interface between an old concrete and a bonded overlay: Debonding mechanism.” Interface Sci. 12 (4): 381–388. https://doi.org/10.1023/B:INTS.0000042336.03156.cb.
Han, J., G. T. Zhao, X. B. Xiao, Z. F. Wen, Q. H. Guan, and X. S. Jin. 2015. “Effect of softening of cement asphalt mortar on vehicle operation safety and track dynamics.” J. Zhejiang Univ.-Sci. A 16 (12): 976–986. https://doi.org/10.1631/jzus.A1500080.
Harada, Y., S. Tottori, N. Itai, and T. Noto. 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., Y. H. Zhang, and F. Z. Wang. 2012. “Effect of temperature and pressure on the degradation of cement asphalt mortar exposed to water.” Constr. Build. Mater. 34: 570–574. https://doi.org/10.1016/j.conbuildmat.2012.03.002.
Iwnicki, S. 2009. “Future trends in railway engineering.” Proc. Inst. Mech. Eng. Part C J. Mech. Eng. Sci. 223 (12): 2743–2750. https://doi.org/10.1243/09544062JMES1545.
Kong, X. M., Y. L. Liu, Y. R. Zhang, Z. L. Zhang, P. Y. Yan, and Y. Bai. 2014. “Influences of temperature on mechanical properties of cement asphalt mortars.” Mater. Struct. 47 (1–2): 285–292. https://doi.org/10.1617/s11527-013-0060-2.
Li, S. M., Y. J. Xie, X. G. Zheng, and J. Liu. 2011. “Influencing factors on the shrinkage of cement asphalt mortars used in CRTS II slab track.” [In Chinese.] Railway Eng. 3: 126–128.
Liu, Y., F. Wang, M. Liu, and S. Hu. 2014. “A microstructural approach to adherence mechanism of cement and asphalt mortar (CA mortar) to repair materials.” Constr. Build. Mater. 66: 125–131. https://doi.org/10.1016/j.conbuildmat.2014.05.020.
Liu, Y. L., X. M. Kong, Y. R. Zhang, and P. Y. Yan. 2012. “Static and dynamic mechanical properties of cement-asphalt composites.” J. Mater. Civ. Eng. 25 (10): 1489–1497. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000681.
Ouyang, J., and Y. Tan. 2015. “Rheology of fresh cement asphalt emulsion pastes.” Constr. Build. Mater. 80: 236–243. https://doi.org/10.1016/j.conbuildmat.2015.01.078.
Peng, J., D. Deng, Z. Liu, Q. Yuan, and T. Ye. 2014. “Rheological models for fresh cement asphalt paste.” Constr. Build. Mater. 71: 254–262. https://doi.org/10.1016/j.conbuildmat.2014.08.031.
Qin, X. T., S. Y. Zhu, S. F. Chen, X. Li, and H. B. Dou. 2015. “Comparative study on the deformation behaviors of cement emulsified asphalt mortars.” Mater. Struct. 48 (10): 3241–3247. https://doi.org/10.1617/s11527-014-0394-4.
Qiu, K., H. Chen, H. Ye, J. Hong, W. Sun, and J. Jiang. 2013. “Thermo-mechanical coupling effect on fatigue behavior of cement asphalt mortar.” Int. J. Fatigue 51: 116–120. https://doi.org/10.1016/j.ijfatigue.2013.01.001.
Robertson, I., C. Masson, T. Sedran, F. Barresi, J. Caillau, C. Keseljevic, and J. M. Vanzenberg. 2015. “Advantages of a new ballastless trackform.” Constr. Build. Mater. 92: 16–22. https://doi.org/10.1016/j.conbuildmat.2014.06.099.
Rutherford, T., Z. Wang, X. Shu, B. Huang, and D. Clarke. 2014. “Laboratory investigation into mechanical properties of cement emulsified asphalt mortar.” Constr. Build. Mater. 65: 76–83. https://doi.org/10.1016/j.conbuildmat.2014.04.113.
Song, X., C. Zhao, and X. Zhu. 2014. “Temperature-induced deformation of CRTS II slab track and its effect on track dynamical properties.” Sci. China Technol. Sci. 57 (10): 1917–1924. https://doi.org/10.1007/s11431-014-5634-x.
Tan, Y., J. Ouyang, and Y. Li. 2014. “Factors influencing rheological properties of fresh cement asphalt emulsion paste.” Constr. Build. Mater. 68: 611–617. https://doi.org/10.1016/j.conbuildmat.2014.07.020.
Tan, Y., J. Ouyang, J. Lv, and Y. Li. 2013. “Effect of emulsifier on cement hydration in cement asphalt mortar.” Constr. Build. Mater. 47: 159–164. https://doi.org/10.1016/j.conbuildmat.2013.04.044.
Wang, F., Z. Liu, T. Wang, and S. Hu. 2008a. “A novel method to evaluate the setting process of cement and asphalt emulsion in CA mortar.” Mater. Struct. 41 (4): 643–647. https://doi.org/10.1617/s11527-007-9270-9.
Wang, F., Z. Liu, T. Wang, and S. Hu. 2010. “Temperature stability of compressive strength of cement asphalt mortar.” ACI Mater. J. 107 (1): 27–30.
Wang, F., T. Wang, S. Hu, Z. Liu, T. Gao, and L. Chen. 2008b. “Rheological behavior of cement asphalt mortar.” [In Chinese.] Eng. J. Wuhan Univ. 4: 69–70.
Wang, F. Z., and Z. C. Liu. 2008. “Research on the fatigue behavior of CA mortar used in ballastless slab track of high speed railway.” J. Wuhan Univ. Technol. 30 (11): 79–81.
Wang, J. F., Y. R. Chen, X. L. Fan, and J. Z. Li. 2015. “Effects of strain rate and confining pressure on compressive behavior of cement asphalt mortar.” Mater. Des. (1980-2015) 65: 772–779. https://doi.org/10.1016/j.matdes.2014.10.010.
Wang, J. F., X. Wu, X. L. Fan, and Y. R. Chen. 2016. “Stress-strain model of cement asphalt mortar subjected to temperature and loading rate.” Constr. Build. Mater. 111: 164–174. https://doi.org/10.1016/j.conbuildmat.2016.02.080.
Wang, P., H. Xu, and R. Chen. 2014. “Effect of cement asphalt mortar debonding on dynamic properties of CRTS II slab ballastless track.” Adv. Mater. Sci. Eng. 2014: 1–8. https://doi.org/10.1155/2014/193128.
Wang, Q., P. Yan, X. Kong, and J. Yang. 2011. “Compressive strength development and microstructure of cement-asphalt mortar.” J. Wuhan Univ. Technol. Mater. Sci. Ed. 26 (5): 998–1003. https://doi.org/10.1007/s11595-011-0351-9.
Wang, R., and P. Wang. 2010. “Function of styrene-acrylic ester copolymer latex in cement mortar.” Mater. Struct. 43 (4): 443–451. https://doi.org/10.1617/s11527-009-9501-3.
Xiang, J., D. He, and Q. Y. Zeng. 2009. “Effect of cement asphalt mortar disease on dynamic performance of slab track.” [In Chinese.] J. Central South Univ. Sci. Technol. 40 (3): 791–796.
Xie, H. C., G. Y. Li, and G. J. Xiong. 2002. “Microstructure model of the interfacial zone between fresh and old concrete.” J. Wuhan Univ. Technol. Mater. Sci. Ed. 17 (4): 64–68. https://doi.org/10.1007/BF02838421.
Xie, Y. J., Q. Fu, G. C. Long, K. R. Zheng, and H. Song. 2014a. “Creep properties of cement and asphalt mortar.” Constr. Build. Mater. 70: 9–16. https://doi.org/10.1016/j.conbuildmat.2014.07.103.
Xie, Y. J., Q. Fu, K. R. Zheng, Q. Yuan, and H. Song. 2014b. “Dynamic mechanical properties of cement and asphalt mortar based on SHPB test.” Constr. Build. Mater. 70: 217–225. https://doi.org/10.1016/j.conbuildmat.2014.07.092.
Yang, J., P. Yan, X. Kong, and X. Li. 2010. “Study on the hardening mechanism of cement asphalt binder.” Sci. China Technol. Sci. 53 (5): 1406–1412. https://doi.org/10.1007/s11431-010-0010-y.
Yuan, Q., W. Liu, Y. Pan, D. Deng, and Z. Liu. 2016. “Characterization of cement asphalt mortar for slab track by dynamic mechanical thermoanalysis.” J. Mater. Civ. Eng. 28 (3): 04015154. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001401.
Zhang, Y., and X. Kong. 2014. “Influences of superplasticizer, polymer latexes and asphalt emulsions on the pore structure and impermeability of hardened cementitious materials.” Constr. Build. Mater. 53: 392–402. https://doi.org/10.1016/j.conbuildmat.2013.11.104.
Zhang, Y., X. Kong, S. Hou, Y. Liu, and S. Han. 2012. “Study on the rheological properties of fresh cement asphalt paste.” Constr. Build. Mater. 27 (1): 534–544. https://doi.org/10.1016/j.conbuildmat.2011.07.010.
Zhu, S., and C. Cai. 2014. “Interface damage and its effect on vibrations of slab track under temperature and vehicle dynamic loads.” Int. J. Non-Linear Mech. 58: 222–232. https://doi.org/10.1016/j.ijnonlinmec.2013.10.004.
Zhu, S., Q. Fu, C. Cai, and P. D. Spanos. 2014. “Damage evolution and dynamic response of cement asphalt mortar layer of slab track under vehicle dynamic load.” Sci. China Technol. Sci. 57 (10): 1883–1894. https://doi.org/10.1007/s11431-014-5636-8.
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©2019 American Society of Civil Engineers.
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Received: May 24, 2018
Accepted: Dec 17, 2018
Published online: Apr 27, 2019
Published in print: Jul 1, 2019
Discussion open until: Sep 27, 2019
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