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Title |
The Influence of Specimen Volume on the Adiabatic Temperature Rise of Concrete
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DOI |
https://doi.org/10.4334/JKCI.2012.24.6.659 |
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Keywords |
단열온도 상승 ; 혼합시멘트 ; 최대 단열온도 상승양 ; 반응계수 adiabatic temperature rise ; blended cement ; maximum rise temperature ; reaction factor |
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Abstract |
To secure the thermal crack resistance of mass concrete, researches and the field applications of low heat portland cement (LPC), ternary blended cement (TBC) which is produced by blending ordinary portland cement with blast furnace slag and fly ash, and early strength low heat blended cement (EBC) increased in recent years. Although the model for adiabatic temperature rise is necessary for estimating the risk of thermal cracking of concrete structures, sufficient data have not been accumulated for these mixtures. In addition, the differences in adiabatic test results have been reported for the volume of test specimens. Therefore, the present study evaluated the characteristics of adiabatic temperature rise based on the type of binder and the volume of the adiabatic test specimen. Test results indicated that the maximum temperature rise (Q∞) and the reaction factor (r) of TBC were the lowest. Test results also showed that Q∞ and r changed with respect to the volume of test specimen. Q∞ and r obtained from 6l equipment were lower than those of 50l equipment. Therefore, corrections with respect to this phenomenon was confirmed and the corrections factors are presented.
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