Temperature Field Analytical Solution for OGFC Asphalt Pavement Structure

被引:0
|
作者
Qi, Lin [1 ]
Yu, Baoyang [2 ,3 ]
Zhao, Zhonghua [1 ]
Zhang, Chunshuai [2 ]
机构
[1] Shenyang Urban Construct Univ, Sch Civil Engn, Shenyang 110167, Peoples R China
[2] Shenyang Jianzhu Univ, Sch Transportat & Geomatics Engn, Shenyang 110168, Peoples R China
[3] Dalian Maritime Univ, Transportat Engn Coll, Dalian 116026, Peoples R China
关键词
pavement structure; open-graded friction course; thermal conductivity; temperature field; analytical solution; POROUS ASPHALT; MODEL; PROFILE; SYSTEM;
D O I
10.3390/coatings13071172
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The change law of the temperature field of an open-graded friction course (OGFC) asphalt pavement was studied. The thermal conductivity of OGFC asphalt mixtures with different oil-stone ratios was measured using a thermal-conductivity tester. The relationship between the oil-stone ratio and thermal conductivity was established, which was then used as the boundary condition of the temperature field. Using mathematical and physical methods based on thermodynamics and heat-transfer principles, an analytical solution of the temperature field of the OGFC asphalt pavement structure was developed. Data from an outdoor test of large Marshall specimens were compared with the analytical solution of the temperature field to verify the correctness of the model. The results show that the analytical model of the OGFC asphalt pavement structure temperature field can predict the temperature changes at different oil-stone ratios, times, and depths (from the road surface). The differences between the predicted results and test data at 0.01, 0.02, and 0.03 m from the road surface were 0.5, 0.7, and 0.9 & DEG;C, respectively, confirming that this study can be used to provide reference information for the design of OGFC asphalt pavement structures.
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页数:16
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