Geotechnical Engineering (한국지반공학회지:지반)

Korean Geotechnical Society (한국지반공학회)
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Evaluation of the Asph81t Mixture Performance with Waste Materials

  • Lee, Kwan-Ho (Member, Research Assistant. Geotechnical Engineer ins, Purdue University, W. Lafayette, IN 47907) ;
  • Lovell, C (Professor. Emeritus, Geotechnical Engineering, Purdue University, W. Lafayette, IN 47907)
  • Published : 1996.06.01
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Abstract

The objective of this paper is to evaluate the asphalt mixture performance with pyrolyzed carbon black(CBP) and air -cooled iron blast furnace slag. Marshall mix design was performed to determine the optimum binder content, The optimum binder content ranged from 6.3 percent to 7.75 percent. Dynamic creep testing was carried out using mixtures at the optimum binder content. Based on the test results, the use of pyrolyzed carbon black and slag in the asphalt pavement showed a positive result, such as the increase of Marshall stability, the decrease of the strain rate and the decrease in the mix stiffness rate at high temperature(5$0^{\circ}C$) and 137.9 kPa confinement. Within the limits of this research. it was concluded that pyrolyzed carbon black as an additive and slag as a coarse aggregate could be used to produce an asphalt paving mixture that has good stability, stiffness, and rutting resistance.

본 논문의 주된 목적은 폐자원(첨가제로서 pyrolyzed carbon black과 굵을 골재로서 aircooled iron blast furnace slag)을 사용한 아스팔트 콘크리트의 기본특성을 설명하는 것이다. 최적의 아스팔트 함유량을 결정하기 위하여 Marshall Mik Design방법을 이용하였고, 최적의 아스팔트 함유량은 첨가제의 양에 따라 변하며,그 범위는 6.7%에서 7.57%로 나타났다. 최적의 아스팔트 함유량을 이용하여 아스팔트 콘크리트 시편을 제작하였고, dynamic creep 실험을 수행하였다. Pyrolyzed carbon black과 Furnace slag의 사용은 Marshall stability를 증가시켰고, 비교적 높은 온도(5$0^{\circ}C$)와 137.gkpa의 구속 압력하에서 아스팔트 콘크리트의 시간에 따른 변형률을 감소시켰고, 또한 시간에 따른 아스팔트 콘크리트의 stiffness감소 비율을 줄여주는 역할을 하였다. 본 실험결과로 부터 첨가제로서의 pyrolyzed carbon black과 굵은 골재로서의 slag의 사용은 Marshall stability, stiffness, rutting resistance에 좋은 결과를 나타내는 것으로 밝혀졌다.

Keywords

References

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