International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Performance Evaluation of Cold Recycled Asphalt Mixtures with Asphalt Emulsion and Inorganic Additives

무시멘트 첨가제를 활용한 상온 재활용 아스팔트 혼합물의 성능 분석

  • 박창규 (세종대학교 공과대학 건설환경공학과) ;
  • 김경수 (세종대학교 공과대학 건설환경공학과) ;
  • 김원재 (세종대학교 공과대학 건설환경공학과) ;
  • 이현종 (세종대학교 공과대학 건설환경공학과)
  • Received : 2017.03.15
  • Accepted : 2017.04.03
  • Published : 2017.04.17
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Abstract

PURPOSES :The objective of this study is to evaluate the performance of asphalt mixtures containing inorganic additive and a high content of reclaimed asphalt pavement (RAP). METHODS : The laboratory tests verified the superior laboratory performance of inorganic additive compared to cement, in cold recycled asphalt mixtures. To investigate the moisture susceptibility of the specimens, tensile strength ratio (TSR) tests were performed. In addition, dynamic modulus test was conducted to evaluate the performance of cold recycled asphalt mixture. RESULTS :It was determined that NaOH solution mixed with $Na_2SiO_3$ in the ratio 75:10 provides optimum performance. Compared to Type B and C counterparts, Type A mixtures consisting of an inorganic additive performed better in the Indirect tensile strength test, tensile strength ratio test, and dynamic modulus test. CONCLUSIONS : The use of inorganic additive enhances the indirect strength and dynamic modulus performance of the asphalt mixture. However, additional experiments are to be conducted to improve the reliability of the result with respect to the effect of inorganic additive.

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References

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