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.

ABSTRACT
 1. 서론
  1.1. 연구의 배경 및 목적
  1.2. 연구의 범위 및 방법
 2. 기존 문헌조사 및 국내외 기술개발 동향
  2.1. 보수방법
  2.2. 국내의 연구 및 기술산업동향
  2.3. 국내외 보수장비 형태별 분류
 3. 재료 및 장비 개발의 세부 내용
  3.1. 긴급도로 보수재료
  3.2. 보수장비
  3.3. 배합설계에 따른 혼합모듈장치 평가
 4. 결론
 REFERENCES

• 한수현(경희대학교 공과대학 도로연구실 석사과정) | Han, Soo Hyun
• 이상염(인덕대학교 건설정보공학과 조교수) | Lee, Sang Yum
• 이석근(경희대학교 공과대학 사회기반시스템공학과 교수) | Rhee, Suk Keun
• 권봉주((주)오에이티엠엔씨 연구개발 팀장) | Kwon, Bong Ju 교신저자