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아스팔트 긴급보수용 스프레이 패칭 장비 개발 및 현장 적용성 평가

Development of a Spray-Injection Patching System and a Field Performance Evaluation of 100% RAP Asphalt Mixtures using a Rapid-Setting Polymer-Modified Asphalt Emulsion

  • 한수현 (경희대학교 공과대학 도로연구실) ;
  • 이상염 (인덕대학교 건설정보공학과) ;
  • 이석근 (경희대학교 공과대학 사회기반시스템공학과) ;
  • 권봉주 ((주)오에이티엠엔씨 연구개발팀)
  • 투고 : 2018.01.08
  • 심사 : 2018.01.30
  • 발행 : 2018.02.19

초록

PURPOSES : The purpose of this study was to develop an urgent road-repair system and perform a field applicability test, as well as discover the optimum mix design for machine applications compared to the optimum mix design for lab applications. METHODS : According to reviews of the patent and developed equipment, self-propelled and mix-in-place equipment types are suitable for urgent pavement repair, e.g., potholes and cracks. The machine-application mix design was revised based on the optimum lab-test mix design, and the field application of a spray-injection system was performed on the job site. The mixture from the machine application and lab application was subjected to a wet-track abrasion test and a wheel-tracking test to calibrate the machine application. RESULTS and CONCLUSIONS : This study showed that the binder content could differ for the lab application and the machine application in the same setting. Based on the wet-track abrasion test result, the binder contents of the machine application exceeded the binder contents of the lab application by 1-1.5% on the same setting value. Moreover, the maximum dynamic stability value for the machine application showed 1% lower binder contents than the maximum lab-application value. Collectively, the results of the two different tests showed that the different sizes and operating methods of the machine and lab applications could affect the mix designs. Further studies will be performed to verify the bonding strength and monitor the field application.

키워드

참고문헌

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