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Quality Control of Earth Fills Using Time Domain Reflectometry (TDR)
SI. Siddiqui
RJ. Deschamps
VP. Drnevich
W. Feng
C-P Lin
出版
ASTM International
, 2000
URL
http://books.google.com.hk/books?id=P6t1zgEACAAJ&hl=&source=gbs_api
註釋
Measurement of soil density and water content in compacted fills is the principal means of quality control to assure adequate performance. Current testing methods have various limitations, including the use of hazardous materials, limitations in accuracy, the need for extensive calibration, or the test duration. A new technique using time domain reflectometry (TDR) to measure the water content and density of soil is introduced. The purpose of this paper is to present a historical and theoretical background of this new approach. Prototype equipment was developed for routine use in the quality control testing of compacted soils. The method was evaluated with theoretical study and laboratory experiments. The results of the TDR method are compared with results from conventional methods on actual construction sites. The advantages and limitations of this new method are also discussed.
