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

다국어 초록 (Multilingual 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 (Reference)

1 성찬용 ; 김태호, "폐유리분말과 재생골재를 사용한 포장용 투수성 폴리머 콘크리트의 공학적 성질" 한국농공학회 53 (53): 59-65, 2011

2 김태형 ; 태성호, "콘크리트 생산에 의한 CO2 배출량 평가 시스템 개발에 관한 연구" 한국콘크리트학회 22 (22): 787-796, 2010

3 이진형 ; 박찬기, "고로슬래그 골재를 사용한 다공성 콘크리트의 물리 역학적 특성에 미치는 고로슬래그 미분말, 황토 및 보강섬유의 효과" 한국농공학회 52 (52): 53-60, 2010

4 "ÖKOBAUDAT"

5 Choi, S. W., "The present situation of production and utilization of steel slag in Korea and other countries" 19 (19): 28-33, 2007

6 Ahn, B. H., "Physical and mechanical properties of rural-road pavement concrete in South Korea containing air-cooled blast-furnace slag aggregate" 11 (11): 1-16, 2021

7 Ahn, B. H., "Performance and field application of rural road concrete pavement using air cooled blast furnace slag aggregates" Kongju National University 2018

8 Korea Environmental Industry and Technology Institute, "National LCI DB"

9 Korea Institute of Construction Technology, "National D/B for Environmental Information of Building Products" Korea Institute of Construction &Transportation Technology Evaluation and Planning 2008

10 Ahn, J. C., "Leological properties of blast furnace slag mixed cement paste with condensation time" 16 (16): 505-512, 2016

11 Choi, H. G, "Establishment of Resource Circulation Network Using Ready-Mixed Concrete Aggregate in Furnace Slag" Korea Industrial Complex Corporation 2017

12 Kim, H. H., "Design and performance evaluation of porous vegetable concrete using industrial by-products" Kongju National University 2016

13 Hanyang University, "Concrete mixing design technology development to reduce CO2 emission" Korea Institute of Construction &Transportation Technology Evaluation and Planning 2015

14 Ahn, B. H., "Chloride ion diffusion and durability characteristics of rural-road concrete pavement of South Korea using air-cooled slag aggregates" 11 (11): 1-18, 2021

15 Kim, H. H., "Carbon dioxide emission evaluation of porous vegetation concrete blocks for ecological restoration projects" 9 (9): 1-13, 2017

16 Bang, J. H., "CO2 reduction and utilization of slag after extraction of calcium by means of a gangrene and converter slag" 28 (28): 101-111, 2017

17 Mun, H. Y., "Blast furnace slag aggregate" 9 (9): 18-22, 1997

18 Choi, S. W., "Application of furnace slag as aggregate resources for concrete" 5 (5): 24-32, 2010

19 Roh, S. J., "Aggregates and environmental impacts" 14 (14): 61-63, 2019

20 Han, S. L., "A study on the evaluation of CO2emissions in concrete production by type and region of reinforced concrete buildings" Hanyang University 2010

21 Jung, K. Y., "A study on the application of thick aggregate as an aggregate for PHC file in the blast furnace" 341-342, 2014

22 Korea Waste Association, "A Study on the Improvement of Steel Slag Recycling System" Ministry of Environment 2011