Patents by Inventor Hongfang Sun

Hongfang Sun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of assessing drying depth of cementitious material
    Patent number: 10816535
    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.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 27, 2020
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Hongfang Sun, Feng Xing, Zhili Ren, Dawang Li, Jian Liu, Bing Fan
  • METHOD OF ASSESSING DRYING DEPTH OF CEMENTITIOUS MATERIAL
    Publication number: 20180136188
    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.
    Type: Application
    Filed: January 10, 2018
    Publication date: May 17, 2018
    Inventors: Hongfang Sun, Feng Xing, Zhili Ren, Dawang Li, Jian Liu, Bing Fan