Static and Dynamic Mechanical Properties of Cement-Asphalt Composites
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 10
Abstract
Static and dynamic mechanical properties of cement-asphalt composites with various contents of asphalt incorporated were studied. Uniaxial compressive stress-strain curves of different cement-asphalt mortars (CAMs) with cement mass ratio (A/C) in the range of 0.2 to 1.0 were obtained by the Materials Testing System (MTS) under different testing temperatures ranging from to 80°C. Two typical CAMs, one with A/C of 0.2 denoted by LAC and the other with A/C of 0.9 denoted by HAC, were chosen to be tested at varied deformation rates over a range of 0.3 to 30 mm/min at room temperature. The correlation between mechanical properties, e.g., peak stress or elastic modulus, and temperature or loading rate was, respectively, acquired. As a result, temperature sensitivity and loading rate dependence for mechanical behavior of different CAMs were analyzed. Dynamic mechanical analysis (DMA) on three cement-asphalt binders (CABs) with A/Cs from 0.2 to 1.0 was carried out, and temperature spectra and frequency spectra were obtained. The Burger model was used to simulate the viscoelastic mechanical behaviors of CABs. Results indicate that peak stress and elastic modulus of CAMs decline with the increasing A/C and temperature. The temperature sensitivity and the loading rate dependence for mechanical properties of CAMs with higher A/Cs are greater than those of CAMs with lower A/Cs. To quantify the dependence of mechanical properties on temperature and loading rate, temperature-sensitive factor and rate-influencing factor are defined separately. The two factors increase with the A/C, implying that CAMs with higher A/Cs have greater dependence on temperature and loading rate. Furthermore, the two factors for peak stress are bigger than those for elastic modulus for a given CAM. Dynamic modulus of CABs descends with the increase of A/C or temperature but ascends with the loading frequency. As the temperature rises or A/C increases, the viscoelasticity becomes more remarkable. The dependence of dynamic modulus of CABs with varied A/Cs on loading frequency is successfully simulated by using the Burger model.
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Acknowledgments
The support from the National Natural Science Foundation of China (Grant No. 50802050) and the 11th Five-Year National Key Technologies R&D Program of China (Grant No.2006BAJ05B03) are appreciated.
References
Fu, D. Z., Huang, J. T., and Zheng, X. G. (2002). “Construction technology of CA mortar for ballastless slab track over bridges.” Railw. Constr. Technol., (6), 28–31 (in Chinese).
He, M. (1997). Physics of polymers, Fudan University Press, Shanghai, China, 347–350.
Hu, S. G., Wang, T., Wang, F. Z., Liu, Z. C., Gao, T., and Chen, L. (2008). “Influence factors on freezing and thawing durability of cement asphalt mortar.” J. Wuhan Univ. Technol., 30(8), 30–33 (in Chinese).
Jin, S. H., Chen, X. F., and Yang, J. (2006). “Key technologies of CA mortar for slab track.” Chin. Railway Sci., 27(2), 20–25 (in Chinese).
Kong, X. M., and Liu, Y. L. (2009). “Dynamic mechanical properties of cement asphalt binders at early age.” Proc., 17th Ibausil, Int. Conf. on Build. Mater., Bauhaus-University Weimar, Weimar, Germany, 23–26.
Kong, X. M., Liu, Y. L., and Yan, P. Y. (2010). “Effect of loading rate on mechanical properties of cement asphalt mortars.” J. Build. Mater., 13(2), 187–192 (in Chinese).
Lesueur, D. (2009). “The colloidal structure of bitumen: Consequences on the rheology and on the mechanisms of bitumen modification.” Adv. Colloid Interface Sci., 145(1–2), 42–82.
Li, Y., Xie, B., Bao, J. L., and Zhou, X. J. (2010). “Status and prospects of the slab track CA mortar.” World Build. Mater., 31(2), 46–49 (in Chinese).
Loeber, L., Muller, G., Morel, J., and Sutton, O. (1998). “Bitumen in colloid science: A chemical, structural and rheological approach.” Fuel, 77(13), 1443–1450.
Wang, F. Z., and Liu, Z. C. (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 (in Chinese).
Wang, F. Z., Liu, Z. C., Gao, T., and Hu, S. G. (2008a). “A novel method to evaluate the setting process of cement and asphalt emulsion in CA mortar.” Mater. Struct., 41(4), 643–647.
Wang, F. Z., Liu, Z. C., and Hu, S. G. (2010). “Early age volume change of cement asphalt mortar in the presence of aluminum powder.” Mater. Struct., 43(4), 493–498.
Wang, Q., A, R. H., and Yan, P. Y. (2008b). “Influence of and sand gradation on compressive strength and fluidity of CA mortar.” J. Railway Sci. Eng., 5(6), 1–5 (in Chinese).
Wang, Q., A, R. H., and Yan, P. Y. (2009). “Research on the influencing factor of high strength cement asphalt mortar.” J. Build. Mater., 12(5), 219–225 (in Chinese).
Xu, J., Chen, Z. H., Wang, K., and Yang, Y. (2009). “Research and progress on CA mortar of ballastless slab track cushion.” J. East Chin. Jiaotong Univ., 26(4), 58–62 (in Chinese).
Yang, J. B., Yan, P. Y., Kong, X. M., and Li, X. (2010). “Study on the hardening mechanism of cement asphalt binder.” Sci. China, Ser. E: Technol. Sci., 53(5), 1406–1412.
Yang, T. Q., Luo, W. B., Xu, P., and Wei, Y. T. (2004). Theory and application of viscoelasticity, Science Press, Beijing, 36–37.
Zeng, Z., Zheng, X. G., Weng, Z. C., Wang, Y. H., and Liu, Y. H. (2009). “Construction technology of cement-emulsified asphalt mortar used in CRTS II ballastless slab track.” Railw. Eng., (9), 97–100 (in Chinese).
Zhang, M. (2004). Dynamic-mechanical analysis of polymeric materials, Tsinghua University Press, Beijing.
Zhang, Y., and Li, B. (2009). “Technology research and frost resistance of CA mortar used in slab track.” Gansu Sci. Technol., 25(1), 118–119 (in Chinese).
Zhao, D. T., Wang, T. C., Liu, X. Y., and Wu, L. (2008). “Configuration and performance of CA mortar for ballastless slab track.” J. Tianjin Univ., 41(7), 793–799 (in Chinese).
Zuo, J. Q., Jiang, Q. B., and Fu, D. Z. (2005). “Research on CA mortars used as cushion layer in slab track.” Railw. Eng., (9), 96–98 (in Chinese).
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 25 • Issue 10 • October 2013
Pages: 1489 - 1497
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 4, 2012
Accepted: Sep 7, 2012
Published online: Sep 10, 2012
Discussion open until: Feb 10, 2013
Published in print: Oct 1, 2013
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