In this study, we developed a technology that can measure key evaluation items in the field for various rehabilitation methods and evaluated its performance. The results are as follows. First, when the spray-on lining adhesion strength is measured after drying at high temperature (60℃) for 4 hours and cooling for 2 hours, the results are equivalent to or higher than the adhesion strength measured at room temperature after 48 hours. Therefore, the time required for measuring the adhesion strength in the field can be shortened to 1/8, and it is expected to be helpful in evaluating the condition of the spray-on lining. Second, depending on close or adhesive to existing pipe of the liner of the close-fit lining or CIPP lining, and the grouting condition of the slip lining, the sound frequency generation pattern, the vibration magnitude, and duration using the impact echo showed different characteristics. Therefore, it is thought that it is possible to evaluate liner lifting or grouting failure through analysis of the acoustic frequency, vibration magnitude, and duration. Third, when water penetrates the back of the liner of the close-fit lining or CIPP lining, it was found that the water penetrated between the liner and the existing pipe acts as a couplant, and a signal is repeatedly generated in which ultrasonic energy is transmitted and reflected to the steel pipe after the liner. Therefore, it is judged that it is possible to check whether water has penetrated the back of the liner using ultrasonic waves. Fourth, the liner tensile strength of the close-fit, CIPP lining was compared with the tensile test and the instrumented indentation test, and it was found that the tensile strength was similar. So it was judged that it will be helpful in evaluating the mechanical strength change without the liner specimen in the future.

ABSTRACT
1. 서 론
2. 연구방법
    2.1 갱생공법 별 주요 성능평가 항목
    2.2 갱생공법 별 라이너(닝) 상태측정 기술
    2.3 Pilot-test-bed 구축
3. 연구결과
    3.1 고온 건조 부착강도 측정기술 성능평가
    3.2 라이너 들뜸, 그라우팅 미충진 측정 기술 평가
    3.3 초음파 활용 라이너 후면 물 침투 측정 기술
    3.4 라이너에 대한 계장압입 시험 성능평가
4. 결 론
References

• 이호민(한국수자원공사 K-water연구원) | Ho-Min Lee (K-water Research Institute, Korea Water Resources Corporation)
• 신은허(한국수자원공사 K-water연구원) | Eunher Shin (K-water Research Institute, Korea Water Resources Corporation)
• 최태호(한국수자원공사 K-water연구원) | Tae-Ho Choi (K-water Research Institute, Korea Water Resources Corporation)
• 배철호(한국수자원공사 K-water연구원) | Cheol-Ho Bae (K-water Research Institute, Korea Water Resources Corporation) Corresponding author