[1] Sun Tongsheng, Shi Jinfei, Zhu Songqing, Heat transfer model for microwave hot in-place recyclingof asphalt pavements [J]. Journal of Southeast University (English Edition), 2008, 24 (1): 59-63. [doi:10.3969/j.issn.1003-7985.2008.01.014]

Copy

Heat transfer model for microwave hot in-place recyclingof asphalt pavements()

Share：

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

Volumn:

24

Issue:

2008 1

Page:

59-63

Research Field:

Traffic and Transportation Engineering

Publishing date:

2008-03-30

Info

Title:

Heat transfer model for microwave hot in-place recyclingof asphalt pavements

Author(s):

Sun Tongsheng¹;  Shi Jinfei¹;  Zhu Songqing¹;  2

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²School of Electrical Engineering, Xuzhou Normal University, Xuzhou 221008, China

Keywords:

asphalt pavements;  microwave hot in-place recycling;  heat transfer model;  boundary condition;  intensity of radiation electric field;  microwave heating experiment

PACS:

U418.6

DOI:

10.3969/j.issn.1003-7985.2008.01.014

Abstract:

In order to solve for temperature fields in microwave heating for recycling asphalt mixtures, a two-dimensional heat transfer model for the asphalt mixtures within the heating range is built based on the theory of unsteady heat conduction.Four one-dimensional heat transfer models are established for the asphalt mixtures outside the heating range, which are simplified into four half-infinite solids.The intensity of the radiation electric field is calculated through experiment by using heating water loads.It is suggested that the mathematical model of boundary conditions can be established in two ways, which are theoretical deduction and experimental reverse.The actual temperature field is achieved by fitting temperatures of different positions collected in the heating experiment.The simulant temperature field, which is solved with the Matlab PDE toolbox, is in good agreement with the actual temperature field.The results indicate that the proposed models have high precision and can be directly used to calculate the temperature distribution of asphalt pavements.

References:

[1] Bergese Paolo.Specific heat, polarization and heat conduction in microwave heating systems:a nonequilibrium thermodynamic point of view [J].Acta Materialia, 2006, 54(7):1843-1849.
[2] Vaucher Sébastien, Catala-Civera José-Manuel, Sarua Andrei, et al.Phase selectivity of microwave heating evidenced by Raman spectroscopy [J].Journal of Applied Physics, 2006, 99(11):113505.
[3] Shoenberger J E, Rollings R S, Graham R T.Properties of microwave recycled asphalt cement binders [J].ASTM Special Technical Publication, 1995(1241):199-213.
[4] Hopstock D M.Microwave-absorbing road construction and repair material [R].Minnesota, USA:Final Report to NRRI on Idea Evaluation Subcontract, 2003.
[5] Laurence Jocelyn A, McKenzie David R, Foster Kenneth R.Application of the heat equation to the calculation of temperature rises from pulsed microwave exposure [J].Journal of Theoretical Biology, 2003, 222(3):403-405.
[6] Dincov D D, Parrott K A, Pericleous K A.Heat and mass transfer in two-phase porous materials under intensive microwave heating[J].Journal of Food Engineering, 2004, 65(3):403-412.
[7] Lindroth D P, Berglund W R, Wingquist C F.Microwave thawing of frozen soils and gravels [J].Journal of Cold Regions Engineering, 1995, 9(2):53-63.
[8] 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: Sun Tongsheng(1981—), 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.105085), the Specialized Research Fund of Science and Technology Production Translation of Jiangsu Province(No.BA2006068).
Citation: Sun Tongsheng, Shi Jinfei, Zhu Songqing.Heat transfer model for microwave hot in-place recycling of asphalt pavements[J].Journal of Southeast University(English Edition), 2008, 24(1):59-63.

Common functions