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作者:

Ding, Tingting (Ding, Tingting.) | Wei, Sishuang (Wei, Sishuang.) | Ren, Xin (Ren, Xin.) | Guo, Meng (Guo, Meng.) (学者:郭猛) | Yu, Deshui (Yu, Deshui.)

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摘要:

Dual-phase change materials have the potential to improve both rutting resistance and cracking resistance of asphalt pavement, which have been recognized as very difficult to balance for a long time. The aim of this paper was to develop a dual-phase change material which can be used to regulate temperature at high and low temperature,and verify its road properties. Six kinds of composite phase change materials were selected according to the technical requirements of phase change materials, and the latent heat performance, thermal stability and chemical stability of different phase change materials were studied by differential scanning calorimeter, thermogravimetric analysis and infrared spectroscopy analysis. Then the latent heat performance and temperature regulation performance of the six phase change asphalts were evaluated to analyze the heat absorption and release ability and temperature regulation effect of different composite phase change materials in asphalt;the influence of different phase change materials on the performance of matrix asphalt was compared through the study of viscoelastic properties, high temperature rutting resistance, medium temperature fatigue resistance and low temperature performance and other mechanical properties of different phase change asphalts. Considering the thermal and mechanical properties, 3# and 6# phase change materials were selected as raw materials for the development of dual-phase change temperature modifying materials for road use. The results indicated that the optimal content of 3# and 6# phase change materials is 1.3 %. The addition of dual phase change materials can delay the heating/cooling rate of asphalt mixture by 4.8 %-6.8 % at high temperature and by 6.9 %-10.2 % at low temperature. Compared with ordinary asphalt mixture, the dynamic stability and maximum flexural strain of dual phase change asphalt mixture are increased by 27.8 % and 0.37 % respectively, and the high temperature rutting resistance and low temperature cracking resistance are improved.

关键词:

Asphalt pavement Double phase transition Phase change materials Pavement performance Transformation effect

作者机构:

  • [ 1 ] [Ding, Tingting]Shandong Prov Commun Planning & Design Inst Grp Co, Jinan 250101, Shandong, Peoples R China
  • [ 2 ] [Yu, Deshui]Shandong Prov Commun Planning & Design Inst Grp Co, Jinan 250101, Shandong, Peoples R China
  • [ 3 ] [Ding, Tingting]Shandong Prov High Performance Green Rd Mat Engn T, Jinan 250101, Shandong, Peoples R China
  • [ 4 ] [Yu, Deshui]Shandong Prov High Performance Green Rd Mat Engn T, Jinan 250101, Shandong, Peoples R China
  • [ 5 ] [Wei, Sishuang]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, Beijing 100124, Peoples R China
  • [ 6 ] [Ren, Xin]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, Beijing 100124, Peoples R China
  • [ 7 ] [Guo, Meng]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, Beijing 100124, Peoples R China
  • [ 8 ] [Wei, Sishuang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 9 ] [Ren, Xin]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 10 ] [Guo, Meng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • 郭猛

    [Guo, Meng]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, Beijing 100124, Peoples R China

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来源 :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

年份: 2024

卷: 417

7 . 4 0 0

JCR@2022

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