TDR MEASUREMENT SYSTEM AND THE APPLICATION OF TDR IN GEOENVIRONMENTAL ENGINEERING
Time domain reflectometry (TDR) is a fast, accurate, and safe technology. The basic principle of time domain reflectometry (TDR) is the same as radar. The system sends an electromagnetic pulse along the waveguide and reflects on the mismatch impedance. Therefore, The position of mismatch impedance can be determined from the reflected signal which can be used to monitoring the underground water level. Commonly useful information from TDR signal includes the apparent dielectric constant and the electrical conductivity. The dielectric constant can be utilized to determine the water content of soils and the dry density. The electrical conductivity of pore fluid is a strong indicator of the ionic concentration of contamination in soils and has s strong relationship with the strength of soft soils treated by LKD or cement, therefore, the TDR method is widely used to control the effect of the treated soils and monitor the ionic contaminant.
Time domain reflectometry (TDR) dielectric constant electrical conductivity
Ren-Peng CHEN Wei CHEN Yun-Min CHEN
Department of Civil Engineering, Zhejiang University, China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
153-162
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）