Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multiscale evaluation on temperature adjusting performance and road performance of asphalt mixture containing dual phase change materials
https://orcid.org/0000-0003-3316-1815
Abstract 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.
Highlights Development of a dual phase change material. Determined the optimum doping of the dual phase change material. Temperature-regulating and road performance of biphasic asphalt mixtures were verified by indoor and outdoor experiments.
Multiscale evaluation on temperature adjusting performance and road performance of asphalt mixture containing dual phase change materials
https://orcid.org/0000-0003-3316-1815
Abstract 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.
Highlights Development of a dual phase change material. Determined the optimum doping of the dual phase change material. Temperature-regulating and road performance of biphasic asphalt mixtures were verified by indoor and outdoor experiments.
Multiscale evaluation on temperature adjusting performance and road performance of asphalt mixture containing dual phase change materials
https://orcid.org/0000-0003-3316-1815
Abstract 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.
Highlights Development of a dual phase change material. Determined the optimum doping of the dual phase change material. Temperature-regulating and road performance of biphasic asphalt mixtures were verified by indoor and outdoor experiments.
Multiscale evaluation on temperature adjusting performance and road performance of asphalt mixture containing dual phase change materials
Ding, Tingting (Autor:in) / Wei, Sishuang (Autor:in) / Ren, Xin (Autor:in) / Guo, Meng (Autor:in) / Yu, Deshui (Autor:in)
31.01.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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