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Study on Self-Healing Asphalt Containing Microcapsule

마이크로캡슐이 내재된 자기치유 아스팔트에 관한 연구

  • Kwon, Young-Jin (Department of Polymer Engineering, The University of Suwon) ;
  • Hong, Young-Keun (Department of Polymer Engineering, The University of Suwon)
  • 권영진 (수원대학교 신소재공학과) ;
  • 홍영근 (수원대학교 신소재공학과)
  • Received : 2013.07.19
  • Accepted : 2013.08.12
  • Published : 2013.09.30

Abstract

Microcapsules having healing agent were prepared in which 2,6-dimethylphenol (DMP) as a healing agent forms the core and melamine/formaldehyde resin forms the shell. Microcapsule-contained asphalts showed better mechanical properties than non-contained ones. And as the rest time passed the impact strength of microcapsule-contained asphalt was getting higher than that of asphalt without the microcapsule. As the rest time of 15 days passed, the original strength was restored. This tells that microcapsule-contained asphalt had the ability of self-healing. X-ray photos proved that DMP on asphalt fracture surface, which were burst out of the microcapsules when cracks occurred on asphalt, were polymerized to polyphenyleneoxide and this PPO covered the crack and healed the damage.

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