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Title |
Evaluation of Dispersion of Activated Carbon Fiber in Mortar Using Electrical Resistivity Method
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Authors |
이보연(Bo Yeon Lee) ; 이재승(Jae Seoung Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2017.29.3.283 |
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Keywords |
분산성 ; 전기저항 ; 웨너프로브 ; 섬유활성탄 ; 산 처리 dispersion ; electrical resistivity ; wenner probe ; activated carbon fiber ; acid treatment |
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Abstract |
Various types of fibers are utilized in cementitious materials in order to improve their performances. Here, the extent of fiber dispersion is of key importance regardless of the purpose of using fiber. In this study, activated carbon fiber dispersion in mortar samples was evaluated using electrical resistivity method. In particular, the extent of fiber dispersion was compared per mixing methods and surface treatments. The results suggest that the surface resistivity method is capable of evaluating dispersion of activated carbon fiber and that ultrasound dispersion method is superior to mortar mixer and hand mixer method. The use of superplasticizer improved dispersion but acid treatment was not effective.
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