Effect of thermochromic materials on physical and aging properties of SBS modified asphalt |
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Authors: | Lu Li Zihao Chen |
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Affiliation: | 1. Key Laboratory for Green &2. Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha, China |
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Abstract: | AbstractThe effects of different types (red, black and blue color) and content (2% and 4%) of thermochromic powders on aging properties of styrene-butadiene-styrene copolymer (SBS) modified asphalt were investigated. Physical properties of the binders (ductility, penetration, viscosity and softening point) were tested before and after thermal-oxidative and ultraviolet radiation aging. The results showed thermochromic powders improved the deformability and weakened the high-temperature performance of SBS modified asphalt to some extent. Thermochromic powders could obviously improve the anti-aging properties of SBS modified asphalt. In addition, SBS modified asphalt with 2% thermochromic materials showed the best aging resistance under all aging modes. |
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Keywords: | SBS modified asphalt thermochromic asphalt binder physical properties thermal-oxidative aging UV aging anti-aging properties |
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