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| DOI：10.13522/j.cnki.ggps. 2023001 |
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| Experimental Study on the Dielectric Properties of Laterite Based on the Improved Topp Model |
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WNAG Haijun, XU Xingqian, ZHAO Xi, QU Xin, PENG Guangcan, CAI Bo
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1. College of Water Conservancy, Yunnan Agricultural University, Kunming 650201, China;
2. School of Civil and Construction Engineering, Anyang Institute of Technology, Anyang 455000, China
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| Abstract: |
| 【Objective】Explore the influencing factors of the dielectric properties of laterite and improve the accuracy of the Topp model. 【Method】Taking Yunnan laterite as an example, the dielectric properties test with dry density, water content and temperature as variables were carried out. The variation law of relative dielectric constant of laterite under different conditions was analyzed. The relative dielectric constant model of laterite was constructed and the water content was predicted. 【Result】The relative dielectric constant of laterite are positively correlated with water content, temperature and dry density. The correlation degree of influencing factors is: water content > temperature > dry density. Under the condition of constant temperature, the fitting accuracy of Topp model is higher; when the temperature changes, the fitting accuracy of the Topp model decreases significantly.【Conclusion】The relationship between the relative dielectric constant ( ) and the volumetric water content ( ) fitted by the Topp model under different temperature conditions is quite different, and the accuracy of the Topp model improved by introducing temperature is obviously improved. |
| Key words: laterite; relative dielectric constant; dielectric properties; water content |
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