The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2023
Filed:
Dec. 03, 2020
Korea Institute of Civil Engineering and Building Technology, Gyeonggi-Do, KR;
Gum Sung Ryu, Gyeonggi-do, KR;
Jae Yoon Kang, Gyeonggi-do, KR;
Gi Hong An, Gyeonggi-do, KR;
Byung Suk Kim, Gyeonggi-do, KR;
Jae Joon Song, Seoul, KR;
Kyung Taek Koh, Gyeonggi-do, KR;
Jong Dae Baek, Gyeonggi-do, KR;
KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY, Gyeonggi-do, KR;
Abstract
The present invention provides a concrete vacuum tube segment for a hyper-speed transportation system using ultra-high performance concrete (UHPC) and a manufacturing method thereof. A concrete vacuum tube segment for a hyper-speed transportation system can be easily manufactured using UHPC, in which shrinkage and structural cracking do not occur due to mixing a binder and a short fiber to secure airtightness on the basis of a maximum fill theory, and accordingly, shrinkage of the concrete vacuum tube segment can be reduced even in a partial-vacuum state in which the magnitude of drying shrinkage is very small and quick drying occurs; when mixing the UHPC, an antifoaming agent is mixed and a circular vacuum pump is used to remove generated entrapped air to minimize the entrapped air; and a capsule-type crack healing material, which is able to repair fine cracks, is compacted to secure airtightness of the concrete vacuum tube segment.