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Title |
Effect of the Mixing Ratio of Graphene Oxide, Functionalized Carbon Nanotube, and Nano-Silica on the Mechanical Performance of Cement Paste
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Authors |
김경률(Gyeong-Ryul Kim) ; 서형원(Heong-Won Suh) ; 조성민(Seong-Min Cho) ; 배백일(Baek-Il Bae) ; 배성철(Sung-Chul Bae) |
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DOI |
https://doi.org/10.4334/JKCI.2023.35.1.101 |
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Keywords |
그래핀 옥사이드; 기능성 탄소 나노 튜브; 나노 실리카; 분산도; 압축 강도 graphene oxide; functionalized carbon nanotube; nano-silica; dispersity; compressive strength |
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Abstract |
This research investigated the optimal ratio of graphene oxide (GO), functionalized carbon nanotube (f-CNT), and nanosilica (NS) for reinforcing cement paste. The dispersity of the ultrasonicated nanomaterials mixed with Ca(OH)2 solution was measured to assess the dispersion properties of the mixed nanomaterials in cement paste. Furthermore, the compositions of the cement hydrates and the compressive strength of the nanomaterial-reinforced cement pastes with various mixing ratios were evaluated in order to probe which mixing ratio of the three nanomaterials successfully strengthened the cement paste. In addition, the correlation between the dispersity of the nanomaterials and the compressive strength of the nanomaterial-reinforced cement paste was investigated. The triple-hybrid reinforced cement paste with an optimal ratio of 0.04 g of GO, 0.01 g of f-CNT, and 1 g of NS presented an improved compressive strength compared with single- and hybrid-nanomaterial?reinforced cement paste owing to the excellent dispersity of nanomaterials.
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