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Title |
Carbon-capture Performance of foam Concrete Using Stainless Steel Slag
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Authors |
김병준(Byung Jun Kim) ; 유성원(Sung Won Yoo) ; 최영철(Young Cheol Choi) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.4.18 |
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Keywords |
foam concrete; stainless steel AOD slag; carbonation; CO2 uptake |
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Abstract |
The purpose of this study is to investigate the mechanical and carbon-capture properties of foam concrete containing stainless steelargon oxygen decarbonization(AOD) slag. AOD slag was used as a binder, and foam concrete having a foaming ratio of 69 ± 0.5 % and a slurrydensity of 573.2 to 578.6 kg / m3 was produced. In order to examine the effect of carbonation, blended specimen was cured by two types : normalcuring and CO2 curing. As a result of the experiment, the specimens incorporating AOD slag showed higher compressive strength than Plainafter CO2 curing. According to the analysis of the image of foam concrete, it was confirmed that the ST30 has a lower total pore volume andaverage pore size than plain, resulting in high compressive strength. The SEM analysis confirmed the formation of calcite by carbonation ofAOD slag. Through the thermogravimetric analysis, the increase of CO2 uptake was confirmed by the incorporation of AOD slag. Foam concretehas a higher porosity than normal concrete, so it is expected that carbon-capture performance can be improved by using a AOD slag.
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