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Research on Performance of Pavement & Modification Mechanism of Nano-CaCO3 Modified Asphalt

Author: MaFeng
Tutor: ZhangChao
School: Chang'an University
Course: Road and Railway Engineering
Keywords: Modified asphalt The nanomaterial change wins asphalt Nano Calcium Carbonate Road performance Mechanism
CLC: U414
Type: Master's thesis
Year: 2004
Downloads: 389
Quote: 15
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Abstract


In this paper, on the basis of the understanding of the current domestic and international study of modified bitumen situation and development trend of the first time the use of nano calcium carbonate as an asphalt modifier of nano calcium carbonate modified asphalt pavement performance modification mechanism , nanomaterials lay the foundation of the research , development and application of modified asphalt . Nano calcium carbonate matrix asphalt road performance and improve departure , to prove nano calcium carbonate mixed with asphalt to improve and enhance the possibility of asphalt through the experimental study . The focus of the study from the Modification Mechanism of Nano Calcium Carbonate Modified and asphalt modifier before and after changes in the nature and structure of interaction characteristics , analyzes nano calcium carbonate matrix asphalt and the degree of interaction . Four-component test matrix asphalt and modified asphalt , hydrogen - magnetic resonance imaging ( to 1H- NMR ) , infrared spectroscopy ( IR ) , differential scanning calorimetry (DSC) analysis and X-ray photoelectron spectroscopy (XPS) analysis The test means to explore the modification mechanism . Trials to prove the new modified method to improve and enhance the high temperature performance of the asphalt , which improve the specific heat capacity of modified asphalt . Nano calcium carbonate mixed with asphalt to form a stable , homogeneous blends Nano Calcium Carbonate Modified ultimately can be applied to engineering prerequisite test analysis .

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