Effect of Organo-montmorillonite on the Morphology and Aging Properties of Various Bitumens
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2010年第4期
论文作者：李斌 余剑英
文章页码：650 - 655
摘 要：Effect of organo-montmorillonite （OMMT） on the morphology and aging properties of various bitumens was studied. The morphology of the binders was characterized by atomic force microscopy （AFM）. The influence of OMMT on physical properties of the binders before and after long-term aging and ultraviolet （UV） aging was investigated. It was observed that the effect of OMMT on the morphology and aging properties of bitumens depended on the base bitumen. In one case, OMMT affected the dispersed phase in bitumen. In the other case, OMMT affected the bitumen matrix. In both cases, OMMT caused stiffening of the modified phase. Compared with modification of the dispersed phase, modification of the matrix phase showed an obvious improvement on the physical properties as well as the better UV aging properties of bitumens, which was opposite to the long-term aging result.
李斌1,2，余剑英1
1. Key Laboratory for Silicate Material and Engineering of Ministry of Education, Wuhan University of Technology2. Highway Bureau of Inner Mongolia Autonomous Region
摘 要：Effect of organo-montmorillonite （OMMT） on the morphology and aging properties of various bitumens was studied. The morphology of the binders was characterized by atomic force microscopy （AFM）. The influence of OMMT on physical properties of the binders before and after long-term aging and ultraviolet （UV） aging was investigated. It was observed that the effect of OMMT on the morphology and aging properties of bitumens depended on the base bitumen. In one case, OMMT affected the dispersed phase in bitumen. In the other case, OMMT affected the bitumen matrix. In both cases, OMMT caused stiffening of the modified phase. Compared with modification of the dispersed phase, modification of the matrix phase showed an obvious improvement on the physical properties as well as the better UV aging properties of bitumens, which was opposite to the long-term aging result.
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