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http://dx.doi.org/10.14190/JRCR.2022.10.1.66

Fundamental Study on the Strength and Heat Transferring Charcteristic of Cement Composite with Waste CNT  

Koo, Hounchul (Nampyoung)
Kim, Woon-Hak (School of Civil & Environmental Engineering, Hankyong National University)
Oh, Hongseob (Department of Civil and Infrastructure Engineering, Gyeongsang National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.1, 2022 , pp. 66-73 More about this Journal
Abstract
The purpose of this study was to develop self-heating concrete by utilizing the conduction resistance of concrete in order to reduce the risk of occurrence of black ice in the concrete pavement in winter and to prevent damage caused by freez-thawing effect. For this purpose, it was attempted to evaluate the strength and temperature exothermic characteristics using powder and liquid waste CNTs and a waste cathode agent as a conduction promotion. It was analyzed that liquid waste CNT had an effective dispersion degree in the mortar and a small decrease in strength occurred. In addition, DC 24 V was supplied by applying steel mesh, copper foil and copper wire to the mortar as electrodes, and the temperature change characteristics according to the mixing ratio of spent CNTs, anodes and carbon fibers were evaluated. In addition, by evaluating the temperature characteristics according to the electrode spacing from the selected optimal mixture, it was confirmed that it had sufficient heating characteristics up to an electrode spacing of 100 mm up to AC 50 V.
Keywords
Self-heating; Waste carbon nanotube; Waste cathode agent; Carbon fiber; Compressive strength;
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Times Cited By KSCI : 1  (Citation Analysis)
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