A New Type of Road Material Prepared from Coal Tar Pitch

Abstract:

A new type of road material was made by modifying coal tar pitch with a kind of self-made compound modifier. According to technical standards “Standard Test Methods of Bitument and Bituminous Mixture for Highway Engineering” JTG E20-2011, the properties of modified coal-tar pitch (M-CTP) and its mixture were studied, the softening point, ductility and penetration of M-CTP were all up to standard. Moreover, the properties of M-CTP mixture were also investigated, the wheel tracking test showed the M-CTP mixture has a dynamic stability of 1511n/mm, which was higher than the requirement of ≥800n/mm. The beam bending test results indicated the low-temperature property of M-CTP mixture reach the standard of AH-70 mixture. The Freeze-thaw split test demonstated the water stability of M-CTP mixture meet the standard for using in asphalt pavement. In all, a new type of road material by modifying coal tar pitch was obtained and its properties meet the standard of AH-70. The additive amount of modifier was 15% and the optimum effect was attained. Moreover, the ultraviolet and visible spectrophotometer was used to test the content of benzopyrene (BaP) in CTP before and after modified by M. And the content decreased from 1.92% to 1.62%.

• Periodical: Advanced Engineering Forum (Volume 20)
• Pages: 51-56
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.20.51
• Online since: January 2017
• Authors: Zhe Liu*, Peng Fei Liu, Chong Liang Sun
• Keywords: BAp, Coal Tar Pitch, Modifier, Pavement Performance

References

[1] IARC MONOGRAPHS (2011), 161-166.

[2] Standard Test Methods of Bitument and Bituminous Mixture for Highway Engineering, JTG E20-(2011).

[3] Technical Specifications for Construction of Highway Asphalt Pavements, JTG F40-2004 Baehtz C, Fuess H Naphthalene. Anthraceneand 2, 3- Benzen thrace- nein Zeolite Y [J]. Phys. chem. chem. phys., 2002, 4(18).

[4] Yang K, Zhu L, Xing B. A dsorption of polycyclic aromatic hydrocarbons by carbon nanomaterials[J]. Environ. Sci. Technol, 2006 (40): 1855-1861.

DOI: 10.1021/es052208w

[5] Sidorov O F. Carcinogenic activity of coal tar pitches in relation to the process for their manufactures [J]. Koksi Khimiya, 2006(6): 36-40.

[6] Moissette A, Marquis S. Sorption of Anthracene, Phenanthrene and 9, 10-Dimethylanthracene on Activated Acid HZSM-5 Zeolite. Effect of Sorbate Size on Spontaneous Ionization Yied [J]. Phys. Chem., 2002, 4(22): 5690-5696.

DOI: 10.1039/b206735h

[7] Mendez A, Santamaria R, Menendez R, et a1. Influence of granular carbons on the pyr01ysis behaviour of coal-tar pitches[J]. J Analytical and Applied Pyrolysis, 200l, 58-9(4): 825-832.

DOI: 10.1016/s0165-2370(00)00168-6

[8] Dominguez A, Blanco C, Santamaria R, et a1. Monitoring coal-tar pitch composition changes during air-blowing by gas chromatography[J]. J Chromatography A, 2004, 1026(1): 231-238.

DOI: 10.1016/j.chroma.2003.11.067

[9] G. Collin, Production and Application of Coal-Tar Pitch[C]. Conference on Structure and Properties of Coals. 1991: 154-162.

[10] Schneider K, Koller M, Kalberlah F. et al. Cancer kisk Assessment for Oral Exposure to PAH Mixtures[J].J. Appl. Toxicol, 2002(22): 73-83.

DOI: 10.1002/jat.828

[11] Labudzinska A, Gorczynska K, Maliszewska M. et a1. Determination of Benzo[a]pyrene in Bi tumen-containing products by UV-VIS. Spectrophotometry[J]. ChemAnal(Warsaw), 1996(41): 459-466.

[12] Ziel inski J, Ciesinska W, Polaczek J. Modification of thethermorhe0109i-cal properties of coal tar pitch by adding selected poly(ethylene terephthalate) process waste product[J]. Polish Journal of Applied Chemistry, 2000, 44(2-3): 167-171.

[13] Sidorov OF. Carcinogenic activity of coal tar pitches in relation to the process for their manufactures[J]. Koks i Khimiya, 2006(6): 36-40.

[14] Zhang Qiu-min, Huang Yang-liu, Wu Di, et al. Reduction benzo[a]pyrene in coal tar pitch by modifying with cross linking monomers[C]. The fifth China-Japan chemical engineering seminar. Xi an, China, July 21-24, (2008).