폐타이어 고무분말 개질 아스팔트의 물리적 특성에 대한 공정조건의 영향 (Influence of Processing Conditions on the Physical Properties of Crumb Rubber Modified Asphalts)

서지정보

· 발행기관 : 한국도로학회
· 수록지 정보 : 한국도로학회논문집 / 10권 / 3호 / 239 ~ 246페이지
· 저자명 : 오광중, 김종석

초록

In this study, the influence of reaction temperatures, mixing time and flexible modifier for crumb rubber modified asphalt
(CRMA) as processing conditions were investigated. The temperature susceptibility and adhesion properties of neat and modified
asphalts at low temperature measured using the penetration and tensile adhesion test. It was found that processing temperatures
and flexible modifier were important factors for tensile adhesion strength and toughness energy at low temperature. The CRMA
in the higher processing temperature and flexible modifier exhibited improved tensile adhesion properties which indicated the
flexible structure of neat and modified asphalt binder. In general, the improvements of the physical properties in the CRMAs
were due to the improvements of miscibility between CR and asphalt binder. It was found that the adhesion properties of the
flexible agent modified CRMA were higher than CRMA were related to the flexible agent tend to penetrate into CR particles
and asphalt binder.

영어초록

본 연구는 폐타이어 고무분말 개질 아스팔트 (crumb rubber modified asphalt, CRMA) 공정조건에서반응온도,
혼합반응시간 및 유연성 개질제의 영향을 조사하였다. 저온에서 아스팔트바인더와 개질 아스팔트의 온도 민감성과
접착특성은 침입도와 인장접착강도를 통하여 측정하였다. 유연제와 공정온도가 인장접착강도와 강인화 에너지의 중요
한 요소임을 확인하였다. 더 높은 혼합온도와 연성 개질제에서 CRMA의 인장접착물성이 향상되는 것은 아스팔트바인
더와 개질 아스팔트의 연성구조에 기인한다. CRMA의 물리적 특성의 개선은 CR과 아스팔트바인더간의 상용성에
있다. 유연제가 CR과 아스팔트바인더 안에 침투되어, 유연제에 의해 개질된 CRMA는 CRMA보다 접착특성이 증가하였
음을 확인하였다
asphalts at low temperature measured using the penetration and tensile adhesion test. It was found that processing temperatures
and flexible modifier were important factors for tensile adhesion strength and toughness energy at low temperature. The CRMA
in the higher processing temperature and flexible modifier exhibited improved tensile adhesion properties which indicated the
flexible structure of neat and modified asphalt binder. In general, the improvements of the physical properties in the CRMAs
were due to the improvements of miscibility between CR and asphalt binder. It was found that the adhesion properties of the
flexible agent modified CRMA were higher than CRMA were related to the flexible agent tend to penetrate into CR particles
and asphalt binder.

참고자료

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