괴재슬래그 골재를 적용한 농촌도로 포장 콘크리트의 CO2 배출량 및 경제성 분석
Analysis of CO2 Emission and Economic of Rural Roads Concrete Pavement Using Air Cooled Slag Aggregate
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Recently, as a study to air cooled slag, which is an industrial by-product, research is being proceed to use it as a material for concrete. In this study,the workability, air content, compressive strength, CO2 emission and economic feasibility of concrete were analyzed when air cooled slag, an industrialby-product, was applied as aggregate for rural road pavement concrete. As a result of the analysis, both the slump and air contents test results ofconcrete using the air cooled slag aggregate satisfied the target values, and the compressive strength was increased when the air cooled slag aggregatewas used compared to when the natural aggregate was applied. On the other hand, the largest amount of CO2 emission by raw material was foundin aggregate. The carbon emission of rural road pavement concrete using air cooled slag aggregate increased when the Korean LCI DB was appliedcompared to when natural and crushed aggregates were applied, and the emission decreased when the German LCI DB was applied. This results aredue to differences in the viewpoints of industrial by-products. However, considering the recycling of waste from the environmental aspect, it is necessaryto simultaneously review the CO2 emission and recycling aspects in the future. Also, the application of air cooled slag aggregate had the effect ofimproving the economic efficiency of rural road pavement concrete about 18.75%.
Abstract
Recently, as a study to air cooled slag, which is an industrial by-product, research is being proceed to use it as a material for concrete. In this study,the workability, air content, compressive strength, CO2 emission and economic feasibility of concrete were analyzed when air cooled slag, an industrialby-product, was applied as aggregate for rural road pavement concrete. As a result of the analysis, both the slump and air contents test results ofconcrete using the air cooled slag aggregate satisfied the target values, and the compressive strength was increased when the air cooled slag aggregatewas used compared to when the natural aggregate was applied. On the other hand, the largest amount of CO2 emission by raw material was foundin aggregate. The carbon emission of rural road pavement concrete using air cooled slag aggregate increased when the Korean LCI DB was appliedcompared to when natural and crushed aggregates were applied, and the emission decreased when the German LCI DB was applied. This results aredue to differences in the viewpoints of industrial by-products. However, considering the recycling of waste from the environmental aspect, it is necessaryto simultaneously review the CO2 emission and recycling aspects in the future. Also, the application of air cooled slag aggregate had the effect ofimproving the economic efficiency of rural road pavement concrete about 18.75%.
참고문헌 (22)
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