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Title |
Investigation of the Effects of CNT Dosages on the Hydration and Heating Properties of Cement Composites with Low Water-to-binder Ratio
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Authors |
오성우(Sungwoo Oh) ; 정상화(Sang-hwa, Jung) ; 정원석(Wonseok, Chung) ; 최영철(Young Cheol, Choi) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.6.182 |
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Keywords |
시멘트 ; 플라이애시 ; CNT ; 압축강도 ; SEM ; 미소수화열 ; 발열성능 ; TGA Cement ; Flyash ; CNT ; compressive strength ; SEM ; isothermal calorimetry ; thermal conductivity ; thermal gravimetry analysis |
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Abstract |
Recently, various researches on the utilization of carbon nanotube(CNT) with superior electrical conductivity and large surface areas into concrete have been actively conducted. Thus, mechanical and thermal properties of cement-flyash composites were evaluated concerning the CNT replacements. Based on the low binder-to-water ratio, the cement composites were produced with 0.2 % and 0.5 % of CNT solids. The compressive strengths with various ages, isothermal calorimetry measurement, SEM analysis, thermal conductivity of cement composites and thermal gravimetry analysis were implemented. As the amount of CNT addition was increased, the thermal conductivity of cement composites were also increased. Also, there was no significant mechanical property differences between mixtures with and without CNTs.
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