International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Evaluation of Bond Strength Characteristic of Moisture Induced Asphalt Mixtures using ABS Test

ABS Test를 이용한 아스팔트 혼합물의 수분에 의한 점착특성 평가

  • 송정탄 (한국건설기술연구원 도로연구소) ;
  • 양성린 (한국건설기술연구원 미래융합연구소) ;
  • 신오철 (한진중공업 토목사업본부) ;
  • 이석근 (경희대학교 사회기반시스템공학부) ;
  • 임정혁 (경기도 건설국 도로관리과)
  • Received : 2017.03.03
  • Accepted : 2017.03.21
  • Published : 2017.04.17
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Abstract

PURPOSES : The objectives of this study are to evaluate moisture sensitivity of various asphalt mixtures and to suggest an alternate method for the dynamic immersion test, which is used to determine the application of anti-stripping agent, by analyzing bond strength. METHODS : The bond strength of various asphalt mixtures such as hot mix asphalt, warm mix asphalt, and polymer-modified asphalt was evaluated by the ABS test. In order to characterize moisture sensitivity at different temperatures of the mixtures, the ABS test was conducted at $-10^{\circ}C$, $5^{\circ}C$, $20^{\circ}C$, $40^{\circ}C$, and $54^{\circ}C$ under both dry and wet conditions. The concept of the bond strength ratio was applied for objective moisture sensitivity analysis. Moreover, the bond strength characteristic was compared to the dynamic immersion test to suggest an alternate method to determine the application of anti-stripping agent. RESULTS AND CONCLUSIONS : Overall, the polymer-modified asphalt demonstrates the highest bond strength characteristic regardless of moisture condition and temperature. The bond strength characteristic displays a highly reliable linear relationship from $5^{\circ}C$ to $40^{\circ}C$, and the relationship could be used to predict bond strength at any intermediate temperature. Based on the analysis of bond strength and retained asphalt ratio, the bond strength value of 1254 kPa could be applied as a criterion for anti-stripping agent.

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References

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