吉林大学学报(工学版)

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The physical properties and microstructure of waste rubber powder and SBS complex modified asphalt

Wei Da-chuan1;Wang Yun-peng1;Li Shi-wu1; Qiu Xue-peng2;Ran Xiang-hai2; Ji Xiang-ling2
   

  1. 1.College of Transportation, Jilin University, Changchun 130022, China; 2.State Key Laboratory of Polymer Physics and Chemistry and Laboratory of Polymer Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2007-09-05 Revised:2007-11-05 Online:2008-05-01 Published:2008-05-01

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Abstract:

Waste rubber powder and thermoplastic elastomer SBS were used to modify heavy highway asphalt AH90. The physical properties of the modified asphalt were measured and its microstructure was analyzed. Results show that, after modification, the penetration obviously decreases; the ductility and elastic recovery significantly increase; the softening point and the equivalent softening point T800 increase while the equivalent brittle point T1, 2 decreases. The stability of the modified asphalt at high temperature and its deformability at low temperature are both greatly improved.

Key words: road engineering, waster rubber powder, SBS, complex modification, asphalt, properties and structure

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