Improvement of Deformation Resistancy of Asphalt by Modification with Tire Rubber

타이어고무를 이용한 개질에 따른 아스팔트 변형저항성 향상 연구

  • Hong, Young-Keun (Department of Polymer Engineering, The University of Suwon) ;
  • Ko, Mun-Bo (Department of Polymer Engineering, The University of Suwon)
  • 홍영근 (수원대학교 신소재공학과) ;
  • 고문보 (수원대학교 신소재공학과)
  • Published : 2008.06.30

Abstract

Nowadays, modifying asphalt to improve the resistancy of plastic deformation or rutting on roads has been drawing attention. In this study, asphalts were modified with modifying agents and ground rubber from waste tire (GRT), and the effects of modifier and GRT on the properties of asphalt were analyzed. The Marshall stability of modified asphalt was increased by 98% and the tensile strength increased by 43% compared to straight asphalt. GRT played an important role in enhancing these properties. Viscosity tests, penetration tests and TMA analysis showed the deformation resistancy of modified asphalt. IR and GPC tests indicated that asphalt and modifier have similar chemical structures to each other, and chemical bonding between asphalt and modifier have occurred so that the molecular size lengthened.

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