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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50411

Title: Effect of moisture content on concrete resistivity measurement
Authors: Jin‐Kiang Su
Chung‐Chia Yang
Wen‐Bean Wu
Ran Huang
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: resistivity
water loss
pore structure
Date: 2002-10
Issue Date: 2018-10-08T02:50:48Z
Publisher: Journal of the Chinese Institute of Engineers
Abstract: Abstract: The resistivity of concrete was investigated in this study by employing the Wenner technique. Cylindrical specimens with various water/cement ratios (w/c=0.45, 0.55, and 0.65) were cast and tested. In order to study the effect of moisture content on concrete resistivity, the resistivity and weight were measured for air‐dried specimens and oven‐dried specimens. Test results show that the resistivity decreases with an increase in w/c ratio, but for the saturated concrete specimens with high w/c ratios (w/c>0.55) the resistivity difference is small. For specimens after 8‐hours of air drying, the water loss ratio was about 0.7% and the normalized resistivity increased from 5% to 10% in comparison with the saturated concrete specimens. When the water loss ratio was higher than 3%, the concrete resistivity abruptly increased for all mixes. Therefore, the effect of moisture content on concrete resistivity measurement should be considered in durability evaluation.
Relation: 25(1) pp.117-122
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50411
Appears in Collections:[河海工程學系] 期刊論文

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