International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Performance Evaluation of Cold-Recycling Asphalt Mixtures with an Inorganic Additive

무기질 첨가제를 사용한 상온 재활용 아스팔트 혼합물의 공용성 평가

  • 김경수 (세종대학교 공과대학 건설환경공학과) ;
  • 김현겸 (세종대학교 공과대학 건설환경공학과) ;
  • 김원재 (세종대학교 공과대학 건설환경공학과) ;
  • 박창규 (세종대학교 공과대학 건설환경공학과) ;
  • 이현종 (세종대학교 공과대학 건설환경공학과)
  • Received : 2017.11.11
  • Accepted : 2018.02.05
  • Published : 2018.02.19
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Abstract

PURPOSES : The purpose of this study is to estimate the optimum content of an inorganic additive for cold-recycled asphalt mixtures and evaluate its performance. METHODS : An indirect tensile test, a tensile-strength ratio test, and an indirect tensile-fatigue test were conducted on cold-recycling asphalt mixtures with various additives. RESULTS : The laboratory performance tests indicated that granulated blast-furnace slag mixed with inorganic and cement activators provided optimum performance. The performance results of the cold-recycled asphalt pavement were similar to the inorganic and cement activators' performance in terms of the indirect tensile strength, tensile strength ratio, and indirect tensile-fatigue test. CONCLUSIONS : Overall, the performance of a cold-recycled asphalt mixture using inorganic additives and emulsion asphalt was comparable to a warm-recycled asphalt mixture. However, more experiments aimed at improving its performance and studying the effect of the inorganic additives must be conducted.

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References

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