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[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]
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Heat transfer model for microwave hot in-place recyclingof asphalt pavements()
沥青路面微波现场热再生传热模型
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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
沥青路面微波现场热再生传热模型
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
孙铜生1;  史金飞1;  朱松青1;  2
1东南大学机械工程学院, 南京 211189; 2徐州师范大学电气工程学院, 徐州 221008
Keywords:
asphalt pavements;  microwave hot in-place recycling;  heat transfer model;  boundary condition;  intensity of radiation electric field;  microwave heating experiment
沥青路面;  微波现场热再生;  传热模型;  边界条件;  辐射电场强度;  微波加热实验
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.
为了获得沥青路面微波热再生过程的温度分布规律, 根据非稳态导热理论建立了加热区域内的二维传热模型, 将加热区域外沥青料简化成4个半无限大固体分别建立了一维传热模型.通过加热水负载实验求解了加热沥青料的辐射电场强度.理论推导出了传热边界条件数学模型, 并提出了采用实验数据拟合反求边界条件的方法.通过加热实验测出了沥青混合料的温度并拟合出温度场分布, 利用Matlab中的偏微分工具箱对传热模型仿真求解, 求得的温度场分布和实验结果相当吻合.研究结果证实了该传热模型具有较高的精度, 可以直接计算沥青路面热再生过程中的温度分布.

References:

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[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.
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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.
Last Update: 2008-03-20