Rheological Properties of Modified Coal Tar Pitches
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 3
Abstract
Different modifiers composed of polyethylene glycol, paraformaldehyde, polystyrene, and polyphosphoric acid at different ratios (designated CD-0, CD-1, CD-2. CD-3, and CD-4) were added to coal tar pitch. The resulting modified pitches were prepared and designated control D-0 and D-1, D-2, D-3, and D-4, correspondingly. The objective of this study was to evaluate the properties of the control and modified coal tar pitches by the dynamic shear rheometer (DSR) test and microscopic imaging technology. The complex shear modulus and phase angle of the modified coal tar pitches decreased with increased temperature, which indicated a decline in the gradual capacity for resistance to permanent deformation at high temperatures. There was good correlation between the Christensen-Andersen-Marasteanu (CAM) model and the complex modulus master curve of the modified coal tar pitches. The test results showed that D-4 had a higher complex viscosity than that of the control D-0 and the other modified coal tar pitches (D-1, D-2, and D-3), along with a higher glassy complex modulus , cross frequency , rheological parameter , and better resistance to rheological deformation. Control D-4 also had a strong capability to resist high-temperature permanent deformation. In addition, the homogeneity of D-4 was better than that of the control D-0 and the other modified pitches, as observed in microscopic images. Therefore, it could be concluded that D-4 had better properties compared with the others.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This paper was supported by the Importation and Development of the High-Caliber Talents Project of Beijing Municipal Institutions (Grant No. PXM2013-014210-000165) and the National Natural Science Foundation of China (Grant No. 51478028).
References
1stOpt [Computer software]. Informer Technologies.
AASHTO. (2010). “Standard method of test for determining the rheological properties of asphalt binder using a dynamic shear rheometer (DSR).” AASHTO T 315, Washington, DC.
Alcaniz-Monge, J., Cazorla-Amoros, D., and Linares-Solano, A. (2001). “Characterisation of coal tar pitches by thermal analysis, infrared spectroscopy and solvent fractionation.” Fuel, 80(1), 41–48.
Andreikov, E., Krasnikova, O., and Amosova, I. (2010). “Production of petro/coal tar pitch by joint distillation of coal tar and heavy pyrolytic oil.” Coke Chem., 53(8), 311–317.
Bahia, H., Hanson, D., Zeng, M., Zhai, H., Kharti, M., and Anderson, R. (2001). “Characterization of modified asphalt binders in superpave mix design.”, National Academy Press, Washington, DC.
Bahia, H., Zeng, M., Zhai, H., and Khatri, A. (1999). “Superpave protocols for modified asphalt binders.”.
Chailleux, E., Ramond, G., Such, C., and de La Roche, C. (2006). “A mathematical-based master-curve construction method applied to complex modulus of bituminous materials.” Road Mater. Pavement Des., 7(S1), 75–92.
Chambrion, P., Bertau, R., and Ehrburger, P. (1995). “Effect of polar components on the physico-chemical properties of coal tar.” Fuel, 74(9), 1284–1290.
Clyne, T. R., Li, X., Marasteanu, M. O., and Skok, E. L. (2003). “Dynamic and resilient modulus of Mn/DOT asphalt mixtures.”, Dept. of Civil Engineering, Univ. of Minnesota, Minnesota Dept. of Transportation, Minneapolis.
Dong, Y.-m., and Tan, Y.-q. (2015). “Dynamic viscoelastic property of hard-grade asphalt mixture.” J. Highway Transp. Res. Dev., 9(4), 1–8.
Dongre, R., and D’Angelo, J. (2003). “Evaluation of different parameters for superpave high temperature binder specification based on rutting performance in the accelerated loading facility at FHWA.” 82nd Annual Meeting of Transportation Research Board, Transportation Research Board, Washington, DC.
Fernández, J., Figueiras, A., Granda, M., Bermejo, J., and Menéndez, R. (1995). “Modification of coal-tar pitch by air-blowing. Part I: Variation of pitch composition and properties.” Carbon, 33(3), 295–307.
Gen, W., and Liu, S. (1999). “A study of polyvinyl chloride to modified coal tar for highway.” Shanxi Sci. Technol. Commun., 126(4), 27–30.
Grzyb, B., Machnikowski, J., and Weber, J. (2004). “Mechanism of co-pyrolysis of coal-tar pitch with polyvinylpyridine.” J. Anal. Appl. Pyrol., 72(1), 121–130.
He, D. M., Gu, J., Huang, Y. L., Wu, D., Zhao, S. C., and Zhang, Q. M. (2013). “Reduction of benzo [A] pyrene in coal tar pitch with cross linking monomers.” Advanced materials research, Trans Tech Publications, Switzerland, 1017–1022.
He, Y. (2004). Modern coal chemical industry technology handbook, Chemical Industry Publishing Dept., Beijing, 1–1492.
Hernández, G., Medina, E. M., Sánchez, R., and Mendoza, A. M. (2006). “Thermomechanical and rheological asphalt modification using styrene-butadiene triblock copolymers with different microstructure.” Energy Fuels, 20(6), 2623–2626.
Li, D., Gao, J., and Song, W. (1999). “Progress on research of coal tar pitch modified as pavement material.” Coal Chem. Ind., 88(3), 12–15 (in Chinese).
Machnikowski, J., Kaczmarska, H., Gerus-Piasecka, I., Díez, M. A., Alvarez, R., and García, R. (2002). “Structural modification of coal-tar pitch fractions during mild oxidation—Relevance to carbonization behavior.” Carbon, 40(11), 1937–1947.
McNally, T. (2011). Polymer modified bitumen: Properties and characterisation, Elsevier, Amsterdam, Netherlands.
Pellinen, T., and Witczak, M. (2002). “Stress dependent master curve construction for dynamic (complex) modulus (with discussion).” J. Assoc. Asphalt Paving Technol., 71, 281–309.
Pérez, M., Granda, M., Santamarıa, R., Morgan, T., and Menéndez, R. (2004). “A thermoanalytical study of the co-pyrolysis of coal-tar pitch and petroleum pitch.” Fuel, 83(9), 1257–1265.
Williams, M. L., Landel, R. F., and Ferry, J. D. (1955). “The temperature dependence of relaxation mechanisms in amorphous polymers and other glass-forming liquids.” J. Am. Chem. Soc., 77(14), 3701–3707.
Xu, B., Ouyang, C., and Li, T. (2002). “Study on rheological properties of stearic acid modified asphalt.” Coal Convers., 23(4), 82–86 (in Chinese).
Yan, T.-y. (1986). “Manufacture of road-paving asphalt using coal tar.” Ind. Eng. Chem. Prod. Res. Dev., 25(4), 637–640.
Yao, H., et al. (2012a). “Performance of asphalt binder blended with non-modified and polymer-modified nanoclay.” Constr. Build. Mater., 35(0), 159–170.
Yao, H., et al. (2013). “Evaluation of asphalt blended with low percentage of carbon micro-fiber and nanoclay.” J. Test. Eval., 41(2), 278–288.
Yao, H., You, Z., Li, L., Goh, S. W., and Dedene, C. (2012b). “Evaluation of the master curves for complex shear modulus for nano-modified asphalt binders.” Proc., 12th COTA Int. Conf. of Transportation Professionals, ASCE, Reston, VA.
Zhang, X.-N., Chi, F.-X., Wang, L.-J., and Shi, J.-F. (2008). “Study on viscoelastic performance of asphalt mixture based on CAM model.” J. Southeast Univ., 24(4), 498–502.
Zhu, J., Jin, L., Wei, L., Zhang, Y., Chen, X., and Li, Y. (2000). “Influence of additive to the modification of coal tar pitch pavement.” Fuel Chem. Process., 31(2), 97–100.
Zubkova, V. V. (2006). “Influence of polyethylene terephthalate on the carbonisation of bituminous coals and on the modification of their electric and dielectric properties.” Fuel, 85(12–13), 1652–1665.
Information & Authors
Information
Published In
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Feb 29, 2016
Accepted: Jun 22, 2016
Published online: Aug 24, 2016
Discussion open until: Jan 24, 2017
Published in print: Mar 1, 2017
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.