[1] Zhu Songqing, Shi Jinfei,. Structural design and experimental researchof microwave radiation heater for asphalt pavements [J]. Journal of Southeast University (English Edition), 2009, 25 (1): 68-73. [doi:10.3969/j.issn.1003-7985.2009.01.015]

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Structural design and experimental researchof microwave radiation heater for asphalt pavements()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 1

Page:

68-73

Research Field:

Mechanical Engineering

Publishing date:

2009-03-30

Info

Title:

Structural design and experimental researchof microwave radiation heater for asphalt pavements

Author(s):

Zhu Songqing¹;  2;  Shi Jinfei¹

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²School of Electrical Engineering and Automation, Xuzhou Normal University, Xuzhou 221116, China

Keywords:

asphalt mixtures;  microwave heating;  temperature distribution;  microwave radiation heater;  structural design

PACS:

TH-39

DOI:

10.3969/j.issn.1003-7985.2009.01.015

Abstract:

In order to improve the efficiency of heating and the uniformity of temperature distribution in recycling asphalt mixtures, a pyramidal radiation heater is designed.The principles of designing horn surface size and antenna length are established according to the law of energy conservation and microwave antenna radiation theory.Modeling and simulation are carried out using IE3D software.The simulation results demonstrate that, with a fixed horn surface size, the shortened electric antenna length is the main factor leading to the improved heating uniformity.On the other hand, with a fixed antenna length and diminished surface size, the standing wave ratio decreases with the improved radiation efficiency.Furthermore, the efficiency of radiation drops with increased distance between the horn surface and the asphalt pavement.Microwave heating experiments are carried out using this type of heater.The temperature distribution of asphalt samples is obtained by the grid temperature measurement method, and Matlab simulation is performed.The experimental results are in good agreement with the simulation.

References:

[1] Guo Zhongyin, Li Lihan.Asphalt pavement construction and maintenance technology[M].Beijing:China Communications Press, 2003.(in Chinese)
[2] Zhu Songqing, Shi Jinfei, Wang Hongxiang.Modeling and experiment of microwave heating for hot in-place recycling of asphalt pavements[J].Journal of Southeast University:Natural Science Edition, 2006, 36(3):393-396.(in Chinese)
[3] Boyko L L, Lederer E H.Microwave road patch system [C]//IEEE MTT-S International Microwave Symposium.Ottawa, Ont, Canada, 1978:360-362.
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[5] ORNL.ORNL invention could make driving a little less bumpy [EB/OL].(1997-03-13)[2008-03-20].http://www.ornl.gov/press_-Releases/archive/mr19970513-00.html.
[6] Matsuoka T, Tateiba M.Calculation of scattered power from random medium layers by using radiate transfer theory for the estimation of moisture in soil by microwaves[C]//IEEE Antennas and Propagation Society International Symposium.Columbus, OH, 2003, 1:561-564.
[7] Hopstock D M, Zanko L M.Minnesota taconite as a microwave-absorbing road aggregate material for deicing and pothole patching applications [J].Northland Transporter, 2004, 3:1-16.
[8] Heriberto J D, Michael H T.Implementation of the pyramidal-horn antenna radiation-pattern equations using Mathcad [J].IEEE Antennas and Propagation Magazine, 1999, 41(5):96-99.
[9] Yuan Qiaowei, Chen Qiang, Sawaya Kunio.Performance of adaptive array antenna with arbitrary geometry in the presence of mutual coupling[J].IEEE Transactions on Antennas and Propagation, 2006, 54(7):1991-1996.
[10] Zeland Software, Inc.IE3D manual[M].Fremont, CA, USA:Zeland Software, Inc., 2002.
[11] Cuccurullo G, Berardi P G, Carfagna R, et al.IR temperature measurement in microwave heating [J].Infrared Physics and Technology, 2002, 43(3/4/5):145-150.

Memo

Memo:

Biographies: Zhu Songqing(1969—), male, graduate;Shi Jinfei(corresponding author), male, doctor, professor, shijf@seu.edu.cn.
Foundation items: The Key Project of Science and Technology of Ministry of Education(No.03081, 105085), the Sci-Tech Achievements Transformation Program of Jiangsu Province(No.BA2006068).
Citation: Zhu Songqing, Shi Jinfei.Structural design and experimental research of microwave radiation heater for asphalt pavements[J].Journal of Southeast University(English Edition), 2009, 25(1):68-73.

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