公开(公告)号：US11883982B2

公开(公告)日：2024-01-30

申请号：US18127522

申请日：2023-03-28

Applicant: SHENZHEN UNIVERSITY

Inventor： Yufei Wu ,  Biao Hu ,  Xun Wang

IPC: B28B3/02 ,  B28B17/00 ,  C04B40/00 ,  B28C5/00 ,  C04B111/00

CPC classification number: B28C5/003 ,  B28B3/022 ,  B28B17/0081 ,  C04B40/0096 ,  C04B2111/00051 ,  C04B2111/00068

Abstract: The present disclosure discloses a method for compression casting concrete to reduce the amount of cement, including: adopting any existing concrete mix proportion designed for concrete of given strength, mixing the concrete, pouring the concrete into a mould, and compressing the concrete at a given pressure, where 28-day strength of the compacted concrete is increased; gradually reducing the amount of cement while keeping the amounts of other materials unchanged, where 28-day strength of the concrete is gradually reduced until the concrete meets a design index; proportionally reducing amounts of water and cement in a last mix proportion while keeping the amounts of other materials unchanged, where during compression casting of the concrete, discharge of cement paste is gradually reduced until no cement paste is discharged; and compression casting a concrete member according to a final mix proportion.

公开(公告)号：US20230321868A1

公开(公告)日：2023-10-12

申请号：US18127522

申请日：2023-03-28

Applicant: SHENZHEN UNIVERSITY

Inventor： Yufei Wu ,  Biao Hu ,  Xun Wang

IPC: B28B17/00 ,  B28B3/02 ,  C04B40/00

CPC classification number: B28B17/0081 ,  B28B3/022 ,  C04B40/0096 ,  C04B2111/00068

Abstract: The present disclosure discloses a method for compression casting concrete to reduce the amount of cement, including: adopting any existing concrete mix proportion designed for concrete of given strength, mixing the concrete, pouring the concrete into a mould, and compressing the concrete at a given pressure, where 28-day strength of the compacted concrete is increased; gradually reducing the amount of cement while keeping the amounts of other materials unchanged, where 28-day strength of the concrete is gradually reduced until the concrete meets a design index; proportionally reducing amounts of water and cement in a last mix proportion while keeping the amounts of other materials unchanged, where during compression casting of the concrete, discharge of cement paste is gradually reduced until no cement paste is discharged; and compression casting a concrete member according to a final mix proportion.

公开(公告)号：US12258759B1

公开(公告)日：2025-03-25

申请号：US18894696

申请日：2024-09-24

Applicant: Shenzhen University

Inventor： Biao Hu ,  Ruibo Liu ,  Yingwu Zhou ,  Yufei Wu ,  Feng Xing ,  Zhongfeng Zhu

IPC: E04C5/07 ,  E04C5/16

Abstract: A Carbon Fiber Reinforced Polymer (CFRP) concrete composite component with partitioned cathodic protection and an operation and maintenance method thereof are provided. The composite component includes multiple longitudinal reinforcements, in which a first area, a second area and a third area corresponding to underwater, splash and atmosphere are arranged along an extending direction of each longitudinal reinforcement, respectively; a first spiral rib, which is wound around the multiple longitudinal reinforcements in the first area; a second spiral rib, which is wound around the multiple longitudinal reinforcements in the second area; a third spiral rib, which is wound around the multiple longitudinal reinforcements in the third area; a concrete; a power supply, where the first spiral rib, the second spiral rib and the third spiral rib are connected with a positive electrode of the power supply, and the longitudinal reinforcement is connected with a negative electrode of the power supply.

公开(公告)号：US12099037B1

公开(公告)日：2024-09-24

申请号：US18632412

申请日：2024-04-11

Applicant: Shenzhen University

Inventor： Biao Hu ,  Feiyang Yi ,  Yu Weng ,  Yufei Wu

IPC: G01N3/10 ,  G01N1/28 ,  G01N33/38

CPC classification number: G01N3/10 ,  G01N1/286 ,  G01N33/383 ,  G01N2001/2866

Abstract: A method for determining an optimal fiber content and fiber slenderness ratio in compression-cast fiber-reinforced concrete (CCFRC). The method includes: step 1, determining an optimal range of pressure of CCFRC with a mix proportion; step 2, applying optimal compressive stress to a fiber-reinforced concrete mixture, and performing a uniaxial compression test after demolding and curing; step 3, keeping the slenderness ratio of the fiber in step 1 and the optimal compressive stress in step 2 unchanged, decreasing or increasing content of the fiber, and repeating step 2 to obtain a mechanical property of CCFRC with different content of the fiber; and step 4, keeping the content of the fiber in step 1 and the optimal compressive stress in step 2 unchanged, decreasing or increasing a slenderness ratio of the fiber, and repeating step 2 to obtain a mechanical property of CCFRC with a different slenderness ratio of the fiber.

公开(公告)号：US20230321869A1

公开(公告)日：2023-10-12

申请号：US18125486

申请日：2023-03-23

Applicant: SHENZHEN UNIVERSITY

Inventor： Yufei Wu ,  Biao Hu ,  Xun Wang

IPC: B28C5/00 ,  B28B3/02

CPC classification number: B28C5/003 ,  B28B3/022

Abstract: The present disclosure discloses a method for compression casting concrete by reducing an amount of cement, including: adopting any existing concrete mix proportion designed for concrete of given strength, mixing the concrete, pouring the concrete into a mould, and compressing the concrete at a given pressure, where 28-day strength of the compacted concrete is increased; gradually reducing an amount of cement while keeping amounts of other materials unchanged, where 28-day strength of the concrete is gradually reduced until the concrete meets a design index; proportionally reducing amounts of water and cement in a last mix proportion while keeping amounts of other materials unchanged, where during compression casting of the concrete, discharge of cement paste is gradually reduced until no cement paste is discharged; and compression casting a concrete member according to a final mix proportion.

公开(公告)号：US20230139047A1

公开(公告)日：2023-05-04

申请号：US17754714

申请日：2019-10-09

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY ,  SHENZHEN UNIVERSITY

Inventor： Yufei Wu ,  Syed Minhaj Saleem Kazmi ,  Muhammad Junaid Munir ,  Yingwu Zhou

IPC: C04B18/22 ,  C04B28/04 ,  C04B14/04 ,  C04B14/06 ,  C04B40/00 ,  B28B23/00

Abstract: Disclosed is a concrete product incorporating rubber aggregate produced by casting under pressure. The concrete product may optionally be cast at 6.9-27.7 MPa for periods of, for example, 24 hours. In one embodiment the rubber aggregate may comprise coarse and/or fine rubber aggregate to replace natural sources of coarse and fine aggregate. Casting under pressure was found to generally improve the performance characteristics of the concrete when compared to corresponding concrete cast without pressure.