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Title |
Strength of CNT Cement Composites with Different Types of Surfactants and Doses
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Authors |
하성진(Sung-Jin Ha) ; 강수태(Su-Tae Kang) ; 이종한(Jong-Han Lee) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.2.099 |
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Keywords |
탄소나노튜브 ; 계면활성제 ; 고성능감수제 ; 분산 ; 강도 Carbon Nanotube surfactant ; Superplasticizer ; Dispersion ; Strength |
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Abstract |
This study was aimed to investigate the difference in strength of Carbon Nanotube (CNT) reinforced cement mortars with different types of surfactants and doses. In the experimental program, CTAB, SDBS and TX10 which were common surfactants adopted to improve CNTs dispersion in fabricating CNT composites in many industrial fields were included and superplasticizer which was revealed to be effective to disperse CNTs especially in CNT reinforced cementitious composites were added as well. Superplasticizer presented less strength reduction in cement mortar and more strength gain by adding CNTs among four types of surfactants. Higher dosage of superplasticizer caused lower strength of cement mortar. Adding CNTs of 0.4 wt.% or less to cement didn’t show strength enhancement by adding CNTs but 0.8 wt.% of CNTs resulted in strengthening effect after all. Finally, a combination of 0.1 wt.% of CNTs, superplasticizer and sonication treatment could lead to strength improvement by adding CNTs in cement mortar.
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