公开(公告)号：US11472445B2

公开(公告)日：2022-10-18

申请号：US17110325

申请日：2020-12-03

Applicant: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY

Inventor： Gum Sung Ryu ,  Byung Suk Kim ,  Kyung Taek Koh ,  Jae Joon Song ,  Jae Yoon Kang ,  Jong Dae Baek ,  Gi Hong An

IPC: B61B13/08 ,  C04B14/38 ,  C09J121/02 ,  E01B25/30 ,  C04B16/06 ,  C04B111/72

Abstract: The present invention provides a crack repair material of a concrete vacuum tube segment using ultra-high performance concrete (UHPC) for a hyper-speed transportation system and a crack repairing method for the same capable of, in a case in which a vacuum tube segment of a hyper-speed transportation system, such as the Hyperloop, is manufactured using UHPC, repairing cracks formed in the UHPC vacuum tube segment easily and conveniently using a crack growth prevention material and a patch repair material and capable of immediately repairing cracks formed in the UHPC vacuum tube segment to secure airtightness so that operation of a vacuum pump is minimized and overload of the vacuum pump is prevented.

公开(公告)号：US11773021B2

公开(公告)日：2023-10-03

申请号：US17110314

申请日：2020-12-03

Applicant: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY

Inventor： Gum Sung Ryu ,  Jae Yoon Kang ,  Gi Hong An ,  Byung Suk Kim ,  Jae Joon Song ,  Kyung Taek Koh ,  Jong Dae Baek

IPC: C04B24/26 ,  C04B16/06 ,  C04B14/38 ,  C04B20/10 ,  C04B40/00 ,  B28B1/14 ,  C04B28/02 ,  C04B18/14 ,  C04B14/06 ,  C04B14/48 ,  C04B14/42 ,  C04B14/46 ,  C04B103/00 ,  C04B103/30 ,  C04B103/50

CPC classification number: C04B24/2641 ,  B28B1/14 ,  C04B14/06 ,  C04B14/386 ,  C04B14/42 ,  C04B14/4668 ,  C04B14/48 ,  C04B16/0691 ,  C04B18/146 ,  C04B20/1037 ,  C04B28/02 ,  C04B40/0046 ,  C04B2103/0067 ,  C04B2103/302 ,  C04B2103/50 ,  C04B2201/52

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.