Low-temperature properties of styrene–butadiene–styrene polymer modified bitumens |
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Authors: | Xiaohu Lu Ulf Isacsson Jonas Ekblad |
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Affiliation: | Division of Highway Engineering, Royal Institute of Technology, S-100 44 Stockholm, Sweden |
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Abstract: | Low-temperature properties of the modified bitumens containing styrene–butadiene–styrene (SBS) polymers were investigated using conventional methods, dynamic mechanical analysis (DMA) and bending beam rheometer (BBR). Effects of the characteristics of base bitumens and polymers and the proportion of the components on these properties were studied. The results indicated that SBS polymers improved low-temperature properties of bitumens. The degree of improvement generally increased with SBS content and were influenced slightly by SBS structure. The study also showed a statistically linear relationships between different low-temperature parameters. |
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Keywords: | Highway materials Polymer modified bitumens Low-temperature properties |
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