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Electrical resistivity survey for evaluation of reinforced region by cement grouting in dike  

송성호 (농업기반공사 농어촌연구원)
장의웅 (농업기반공사 농어촌연구원)
김진호 (농업기반공사 농어촌연구원)
김진성 (농업기반공사 농어촌연구원)
김진춘 ((주) 한국지오텍)
Publication Information
The Journal of Engineering Geology / v.12, no.1, 2002 , pp. 63-73 More about this Journal
Abstract
To evaluate reinforced region of dike by cement grouting, we investigated both the electrical resistivity and the strength of cement grout having various water-cement ratio with curing time. These investigation results showed that the electric conductivity of grout is much higher than that of water and that the apparent resistivity of grouted region is much lower than that of unoccupied region by grout. It was founded that electrical resistivity survey might be quite effective to detect grout region in dike. As the results of electrical resistivity sounding at three dikes, apparent resistivities after grouting showed several tens to several hundreds of ohm-m which were lower than those of pre-grouting and showed stabilizing trend with curing time. From these results, we could estimate that this behavior of apparent resistivity is due to increasing strength with curing time.
Keywords
grouting; dike; electric conductivity; vertical electric resistivity; apparent resistivity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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