Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The role of inorganic nanoparticles in photo-oxidation ageing resistance of the thermochromic asphalt binder
The aim of this research is to reveal the role of inorganic nanoparticles concerning silicon dioxide (SiO2), zinc oxide (ZnO) and titanium dioxide (TiO2) in retarding the photodegradation of thermochromic microcapsules for extending the serviceability of thermochromic cool pavement material. Thermochromic asphalt binders (TABs) with and without inorganic nanoparticles were prepared. The varying trends of physical, rheological, chemical and morphological properties with the extended ultraviolet irradiation (UV) ageing duration were compared among asphalt binders. The effects of inorganic nanoparticles on the long-term cooling effects of TABs were evaluated. The results indicate that differing from regular asphalt binder, TABs present an inversely-age hardening phenomenon due to the photodegradation of thermochromic microcapsules. ZnO shows the best efficiency in retarding the photodegradation of thermochromic microcapsules, followed by TiO2 and SiO2. The addition of ZnO or TiO2 can effectively mitigate the impacts of long-term UV ageing on the cooling effects shown by TAB.
The role of inorganic nanoparticles in photo-oxidation ageing resistance of the thermochromic asphalt binder
The aim of this research is to reveal the role of inorganic nanoparticles concerning silicon dioxide (SiO2), zinc oxide (ZnO) and titanium dioxide (TiO2) in retarding the photodegradation of thermochromic microcapsules for extending the serviceability of thermochromic cool pavement material. Thermochromic asphalt binders (TABs) with and without inorganic nanoparticles were prepared. The varying trends of physical, rheological, chemical and morphological properties with the extended ultraviolet irradiation (UV) ageing duration were compared among asphalt binders. The effects of inorganic nanoparticles on the long-term cooling effects of TABs were evaluated. The results indicate that differing from regular asphalt binder, TABs present an inversely-age hardening phenomenon due to the photodegradation of thermochromic microcapsules. ZnO shows the best efficiency in retarding the photodegradation of thermochromic microcapsules, followed by TiO2 and SiO2. The addition of ZnO or TiO2 can effectively mitigate the impacts of long-term UV ageing on the cooling effects shown by TAB.
The role of inorganic nanoparticles in photo-oxidation ageing resistance of the thermochromic asphalt binder
Yang, Xue (Autor:in) / Zhang, Henglong (Autor:in) / Shi, Caijun (Autor:in) / Chen, Zihao (Autor:in)
Road Materials and Pavement Design ; 25 ; 2418-2435
01.11.2024
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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