The concrete vacuum tube structure, which must maintain air-tightness, is manufactured in the form of a segment, and it is necessary to install the joints at uniform gap in order to assemble in the field. In this study, member tests were carried out to investigate the air-tightness performance at the joints of the concrete vacuum tube structures.

Abstract
 1. 서 론
 2. 실험 계획 및 변수
 3. 실험 결과
 참고문헌

• 박희범(한국건설기술연구원, 인프라안전연구본부) | Park Hee Beom
• 강재윤(한국건설기술연구원, 인프라안전연구본부) | Kang Jae-Yoon 교신저자
• 송재준(한국건설기술연구원, 인프라안전연구본부) | Song Jaejoon
• 박흥석(한국건설기술연구원, 인프라안전연구본부) | Park Hung Seok