페로니켈 슬래그 잔골재가 혼입된 콘크리트의 강도 평가

초록

For sustainable development in the construction industry, blast furnace slag has been used as a substitute for cement in concrete. In contrast, ferronickelslag, which is the by-product generated during smelting to ferronickel used in the manufacturing of stainless steel and nickel alloys, has a limitationto use as a binder and an aggregate due to its expansive characteristics. Recently, stabilization technology of ferronickel slag has been improved andstudies have been carried out to utilize ferronicke slag as fine aggregate in concrete. Therefore, in this study, basic mechanical properties of concreteused in ferronickel slag aggregate was evaluated. The compressive strength (24, 30, 40 MPa) and replacement rate of ferronickel slag aggregate (0,10, 25, 50%) were considered as experimental variables. As a result of test, concrete replaced fine aggregate with 25% ferronickel slag aggregateshowed superior performance in the compressive strength and flexural strength.

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