公开(公告)号：US11873247B2

公开(公告)日：2024-01-16

申请号：US18129441

申请日：2023-03-31

Applicant: Shenzhen University

Inventor： Yuan Fang ,  Feng Xing ,  Aoxuan Wang

IPC: C04B14/32 ,  C04B28/00 ,  C04B14/38

CPC classification number: C04B28/006 ,  C04B14/324 ,  C04B14/383

Abstract: Disclosed is a method for preparing an uncalcined geopolymer-based refractory material. The method includes the steps of mixing a mineral powder, a fly ash, a metakaolin, and silicon carbide whiskers by ball milling to form a milled material; mixing the milled material with a sodium water glass solution and water to form a slurry; and curing the slurry to obtain the uncalcined geopolymer-based refractory material. The uncalcined geopolymer-based refractory material thus prepared contains a geopolymer matrix formed of the mineral powder, the fly ash, and the metakaolin and the silicon carbide whiskers embedded in the geopolymer matrix.

公开(公告)号：US11866368B2

公开(公告)日：2024-01-09

申请号：US17474908

申请日：2021-09-14

Applicant: Shenzhen University

Inventor： Feng Xing ,  Yuan Fang ,  Aoxuan Wang

IPC: C04B12/00 ,  C04B28/00 ,  C04B14/32 ,  C04B14/38

CPC classification number: C04B28/006 ,  C04B14/324 ,  C04B14/383

Abstract: An uncalcined geopolymer-based refractory material is provided, comprising a matrix of a geopolymer obtainable by polymerization of a mixture consisting of mineral powder, fly ash, and metakaolin; and SiC whiskers embedded in the geopolymer matrix. The material has excellent mechanical properties and high resistance to high temperatures and exhibits a ductile fracture mechanism instead of a brittle fracture mechanism.

公开(公告)号：US20230250022A1

公开(公告)日：2023-08-10

申请号：US18129441

申请日：2023-03-31

Applicant: Shenzhen University

Inventor： Yuan Fang ,  Feng Xing ,  Aoxuan Wang

IPC: C04B28/00 ,  C04B14/32 ,  C04B14/38

CPC classification number: C04B28/006 ,  C04B14/324 ,  C04B14/383

Abstract: Disclosed is a method for preparing an uncalcined geopolymer-based refractory material. The method includes the steps of mixing a mineral powder, a fly ash, a metakaolin, and silicon carbide whiskers by ball milling to form a milled material; mixing the milled material with a sodium water glass solution and water to form a slurry; and curing the slurry to obtain the uncalcined geopolymer-based refractory material. The uncalcined geopolymer-based refractory material thus prepared contains a geopolymer matrix formed of the mineral powder, the fly ash, and the metakaolin and the silicon carbide whiskers embedded in the geopolymer matrix.

公开(公告)号：US12099785B2

公开(公告)日：2024-09-24

申请号：US18545983

申请日：2023-12-19

Applicant: Shenzhen University

Inventor： Yingwu Zhou ,  Biao Hu ,  Youbin Lan ,  Xiaoxu Huang ,  Feng Xing

IPC: G06F30/20 ,  G01N3/28 ,  G06F111/10

CPC classification number: G06F30/20 ,  G01N3/28 ,  G06F2111/10

Abstract: The present disclosure relates to an optimization method and system for hybrid FRP and steel bars. The optimization method includes: determining a cross-sectional bending bearing capacity, a maximum cross-sectional bending bearing capacity, and a minimum cross-sectional bending bearing capacity according to basic material parameters and a design value of a bending moment; determining whether the cross-sectional bending bearing capacity, the maximum cross-sectional bending bearing capacity, and the minimum cross-sectional bending bearing capacity meet a first preset condition; if yes, determining a maximum steel bar area according to the basic material parameters; determining a maximum ductility of a steel bar beam; determining whether the maximum ductility and the target ductility meet a second preset condition; if yes, determining a minimum steel bar area and a maximum FRP bar area according to the maximum steel bar area; and determining an actual steel bar area and an actual FRP bar area.

公开(公告)号：US11002661B2

公开(公告)日：2021-05-11

申请号：US16322097

申请日：2018-02-02

Applicant: SHENZHEN UNIVERSITY

Inventor： Dawang Li ,  Feng Xing ,  Jiazhao Liu ,  Longyuan Li

IPC: G01N17/04 ,  G01N17/00

Abstract: An apparatus for identifying metal corrosion includes a metal test piece, a push button timer, a liquid tank, a support, two fixed pulleys, a traction cable, a weight and a vibration motor. The support and the first pulley are in a lower portion of the tank. The second pulley is above the first pulley. The test piece is fixed on the support and connected to a first end of the traction cable which sequentially winds around the pulleys with a second end outside the tank. The weight, on which the motor is fixed, is suspended at the second end. The timer is under the motor. A corrosion solution is added into the tank, and the vibration motor provides alternating stress. When the metal test piece is broken, the weight and the motor are dropped and pressed on the electronic timer to record breaking time of the metal test piece.

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：US10378114B2

公开(公告)日：2019-08-13

申请号：US15358064

申请日：2016-11-21

Applicant: SHENZHEN UNIVERSITY

Inventor： Jihua Zhu ,  Feng Xing ,  Ningxu Han ,  Wei Liu ,  Weilun Wang ,  Miaochang Zhu

IPC: C23F13/02 ,  C23F13/16 ,  C23F13/06

Abstract: A cathode protection method of embedded CFRP anode for reinforced concrete structure includes the following steps. Provide a preformed groove with a predetermined shape and size in a surface of a protection area of a reinforced concrete body, and remove dust in the preformed groove. Provide a CFRP member on the surface of the protection area of the reinforced concrete body. Coat an electrical conductive adhesive material between side surfaces of the reinforcing column of the CFRP member and the preformed groove and between the reinforcing plate and the reinforced concrete body. Connect the CFRP member with a positive electrode of an external DC power supply and the steel reinforcing element with a negative electrode of the external DC power supply.

公开(公告)号：US20180136188A1

公开(公告)日：2018-05-17

申请号：US15867680

申请日：2018-01-10

Applicant: SHENZHEN UNIVERSITY

Inventor： Hongfang Sun ,  Feng Xing ,  Zhili Ren ,  Dawang Li ,  Jian Liu ,  Bing Fan

IPC: G01N33/38 ,  C04B40/00 ,  C04B14/06 ,  G01N27/12 ,  G01N1/30 ,  G01N27/02

Abstract: The present invention relates to the field of material determination or analysis, and provides a method of assessing drying depth of cementitious materials including the following steps: preparing a plurality of cementitious material specimens; drying the cementitious material specimens; conducting electrochemical impedance spectrum measurement on each cementitious material specimen; accordingly determining a model for analyzing the drying depth of the cementitious material specimen. The method of assessing drying depth of the cementitious material provided by the present invention takes the influence of the resistivity changes on the model into consideration, and the drying depth of the cementitious material is reflected and reckoned with regularly changes of the electrochemical parameters, not only increasing the accuracy but also saving much testing labor, time and cost.

公开(公告)号：US12116317B2

公开(公告)日：2024-10-15

申请号：US18408776

申请日：2024-01-10

Applicant: Shenzhen University

Inventor： Yingwu Zhou ,  Feng Xing ,  Wenhui Guo ,  Biao Hu ,  Menghuan Guo ,  Xiaoxu Huang ,  Zhongfeng Zhu

IPC: C04B28/00 ,  C04B14/04 ,  C04B14/30 ,  C04B16/04 ,  C04B22/06 ,  C04B24/42 ,  C04B40/00 ,  C04B103/10 ,  C04B103/30 ,  C04B103/50

CPC classification number: C04B28/006 ,  C04B14/045 ,  C04B14/305 ,  C04B16/04 ,  C04B22/062 ,  C04B24/42 ,  C04B40/0042 ,  C04B2103/10 ,  C04B2103/302 ,  C04B2103/50

Abstract: Disclosed are an alkali-activated geopolymer coating, and a preparation method and use thereof. The alkali-activated geopolymer coating, is prepared by raw materials including the following components: an aluminosilicate mineral, an alkali activator, and a performance additive; wherein the aluminosilicate mineral comprises fly ash, slag, and metakaolin; the performance additive comprises a polymer powder, titanium dioxide, a silicone defoamer, and a water-reducing admixture; and a mass ratio of the aluminosilicate mineral, the alkali activator, and the performance additive is in a range of 100:(60-80):(4-15).

公开(公告)号：US20220081363A1

公开(公告)日：2022-03-17

申请号：US17474908

申请日：2021-09-14

Applicant: Shenzhen University

Inventor： Feng Xing ,  Yuan Fang ,  Aoxuan Wang

IPC: C04B28/00 ,  C04B14/38 ,  C04B14/32

Abstract: An uncalcined geopolymer-based refractory material is provided, comprising a matrix of a geopolymer obtainable by polymerization of a mixture consisting of mineral powder, fly ash, and metakaolin; and SiC whiskers embedded in the geopolymer matrix. The material has excellent mechanical properties and high resistance to high temperatures and exhibits a ductile fracture mechanism instead of a brittle fracture mechanism.