Papers by Author: Guo Hui Yang

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Authors: Bin Wen, Bin Qiu, Jing Zhang, Pu Pu Wang, Guo Hui Yang
Abstract: The influence of AC frequency , the content of sodium sulfate and curing time on the electrical resistivity of cemented soil was studied. Firstly, the impedance modulus of cemented soil blocks were measured and their electrical resistivity were calculated; then the primary and secondary factors influencing on the electrical resistivity of cemented soil were determined through orthogonal method; finally , the influence of three factors on cement soil resistivity was discussed qualitatively. It is found that the primary and secondary factors influencing on the electrical resistivity of cemented soil are the curing time, the content of sodium sulfate and the frequency. The electrical resistivity decreases with the increases of AC frequency and content, whereas increases with increasing curing age.
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Authors: Xiao Qiang Dong, Guo Hui Yang, Xiao Hong Bai, Yong Kang Lv
Abstract: As an important and mature technology of researching material properties, ac impedance spectroscopy has successfully applied in many discipline except for soil research. Based on the experiments using TH2828A wide frequency LCR meter (from 50 to 106 Hz), the ac impedance characteristics with different water content of soil had been discussed. The results fully illustrate that the ac impedance is one of the basic property of soil,and the value of ac impedance parameter can be reflected the water content quantitatively. when using the fixed frequency to measure ac impedance of soil, it is most suitable as the frequency equals 104 Hz.The measure method of ac impedance have no effect to physical properties and internal structure of soil.
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