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The steel slag, a by~product which is produced during the manufacture of steel by refining pig iron, is mainly used as road materials after aging it. It is necessary to age steel slag for long time in air because the reaction with water and free~CaO in steel slag could make the expansion of volume. This problem prevents steel slag from being used as aggregate for concrete. However, steel slag used in this study was controled by a air-jet method which rapidly cools substance melted at a high temperature. The rapid-chilling method prevents from generation of free-CaO in steel slag. The rapid-chilled steel slag is similar to be spherical shape and has the heavier specific gravity than natural aggregate. Therefore, it could be used to manufacture radiation shielding concrete as fine aggregate.
This paper investigated the engineering properties of radiation shielding concrete when using rapid-chilled steel slag as fine aggregate. As results of this study, the increase of use of rapid-chilled steel slag decreased the desirable water content of concrete but developed the rate of radiation shielding of concrete. The strength of concrete using it is similar to that of concrete using river sand.

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Abstract

1. 서론

2. 실험계획 및 방법

3. 실험결과

4. 결론

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UCI(KEPA) : I410-ECN-0101-2009-540-014282780