Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
권호 표지

Physical Charateristics of Elastomer Modified Asphalt

탄성체로 개질된 아스팔트의 물리적 특성

  • Lee, S.J. (Research Institute of Ind. Tech., Pusan National Univ.) ;
  • Lee, S.J. (Dept. of Polymer Sci. and Eng., Pusan National Univ.) ;
  • Lee, J.K. (Dept. of Polymer Sci. and Eng., Pusan National Univ.)
  • 이상진 (부산대학교 생산기술연구소) ;
  • 이승진 (부산대학교 고분자공학과) ;
  • 이진국 (부산대학교 고분자공학과)
  • Published : 1997.08.31
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Abstract

The objective in this study was investigated temperature susceptibility and low temperature fracture of rubber modified asphalt. A chlorinated polyethylene elastomer, Tyrin CM0730, was added to 200/300 grade asphalt with 3.0 and 5.0wt% to improve campatibility. The elastomer modified asphalts were analyzed for temperature susceptibility relating to penetration index(PI) and penetration-viscosity number(PVN) as well as low temperature fracture relating to fracture energy $(G_{IC})$. These indices were obtained from the measurements of penetration, viscosity, failure load and modulus. The addition of small amounts of elastomer to the asphalt resulted in a significant increase of both the PI and PVN over an unmodified asphalt. Also, the fracture energy increased with the addition of elastomer to asphalt. These significant improvement at both the high and low temperature result in enhanced performance.

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