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Mortar Characterization using Electrical Resistivity Method  

Farooq, Muhammad (Department of Mineral Resources and Energy Engineering, Chonbuk National University)
Park, Sam-Gyu (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Song, Young-Soo (Department of Mineral Resources and Energy Engineering, Chonbuk National University)
Kim, Jung-Ho (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Publication Information
Geophysics and Geophysical Exploration / v.12, no.2, 2009 , pp. 215-220 More about this Journal
Abstract
Cement based mortars are widely used to improve the soft ground of a dam site, highway construction, and karst voids. The mechanical properties of the mortar are well documented in literature, however very limited work is done on their physical properties such as electrical resistivity which is considered as one of the most important physical property known while improving the soft grounds. In this paper, electrical resistivity of the Portland cement mortars is examined by employing the Wenner technique. Cylindrical specimens with various water/cement ratios (w/c) ranges from 0.35, 0.45, 0.50 and 0.65 were cast and tested. The test results showed that the electrical resistivity of the mortar increases with increasing curing time and decreases with increasing water content and w/c. A reasonable, good relation was found between electrical resistivity and compressive strength of mortar.
Keywords
mortar; electrical resistivity; compressive strength; curing time; water/cement ratios;
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