Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (2): 531-537.doi: 10.13229/j.cnki.jdxbgxb20210640

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Conductive rubber composite pavement paving technology based on mechanical response analysis method

Hai-bin WEI1(),Zi-peng MA1,Hai-peng BI1(),Han-tao LIU2,Shuan-ye HAN1   

  1. 1.College of Transportation，Jilin University，Changchun 130022，China
    2.Zhongqing Construction Co. ，Ltd. ，Changchun 130022，China
  • Received:2021-07-08 Online:2023-02-01 Published:2023-02-28
  • Contact: Hai-peng BI E-mail:weihb@jlu.edu.cn;bihp@jlu.edu.cn

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Abstract:

In order to determine the feasibility and optimal embedding conditions of conductive EPDM composite materials in pavement structure， the stress and strain curves of composite materials were studied by compression test， and a two-dimensional conductive EPDM composite pavement structure model was established by finite element software ANSYS. The mechanical response of the composite pavement structure with different embedding locations， embedding thicknesses and different loads of the composite material were analyzed and compared with the normal pavement structure respectively. The compression test results show that the composite material is mainly elastic in the presence of forces， with a modulus of elasticity of 30.6 MPa. The mechanical response results show that the composite material is feasible for use in pavement structures under reasonable assumptions and that the best location for embedding is under the asphalt concrete layer， with the smaller the embedment thickness the better. In the case of overloading， it is necessary to focus on the effect of shear stresses on the composite pavement structures. The results of this study can provide a reference for practical engineering applications of composite materials.

Key words: road engineering, composite material, deicing, finite element, mechanical response

CLC Number: 

  • U414

Fig.1

Flow chart of composite material preparation"

Table 1

Basic mechanical properties of composite materials"

属 性属性值
抗压强度/MPa13.78
拉伸强度/MPa6.44
撕裂强度/（kN·m-1）16.52
泊松比0.25

Fig.2

Compression test"

Table 2

Calculation parameters of road surface model"

结构层材料名称厚度 /cm弹性模量/MPa泊松比
上面层细粒式沥青混凝土417000.35
中面层中粒式沥青混凝土616000.35
下面层粗粒式沥青混凝土812000.35
基层水泥稳定砂砾3515000.25
垫层级配砂砾302000.25
土基--400.35
导电橡胶复合材料--0.25

Fig.3

Finite element model"

Fig.4

Composite stress-strain curve"

Fig.5

Vertical deformation diagram of composite pavement structure"

Fig.6

Mechanical response of pavement structure results"

Table 3

Mechanical response results data for different pavement structures"

结构类型竖向应力 /MPa竖向位移 /cm横向拉应力/MPa剪应力 /MPa
A-0.742 99-0.690 700.895 44-0.274 95
B-0.729 35-0.703 400.912 72-0.383 59
C-0.744 56-0.703 100.929 32-0.323 39
D-0.744 09-0.704 800.930 77-0.308 89

Table 4

Mechanical response results data for composite pavement structures at different thicknesses"

复合材料厚度/mm竖向应力 /MPa竖向位移 /cm横向拉应力/MPa剪应力 /MPa
5-0.744 08-0.702 000.928 19-0.302 97
6.5-0.744 09-0.704 800.930 77-0.308 89
8-0.744 11-0.707 600.932 44-0.314 25
10-0.744 13-0.711 100.935 96-0.320 74

Fig.7

Results of mechanical response of composite pavement structure under different loads"

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