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    Method of assessing drying depth of cementitious material
    1.
    发明授权
    Method of assessing drying depth of cementitious material 有权

    公开(公告)号：US10816535B2

    公开(公告)日：2020-10-27

    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 ,  G01N27/04 ,  C04B14/06 ,  C04B40/00 ,  G01N1/30 ,  G01N27/02 ,  G01N27/12

    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.

    METHOD OF ASSESSING DRYING DEPTH OF CEMENTITIOUS MATERIAL
    2.
    发明申请
    METHOD OF ASSESSING DRYING DEPTH OF CEMENTITIOUS MATERIAL 审中-公开

    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.

    Apparatus and method for identifying metal corrosion
    3.
    发明授权
    Apparatus and method for identifying metal corrosion 有权

    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.

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