시멘트계 재료의 탄소포집 건설재료로 활용연구 - 탄산화 양생에 의한 미세구조 변화
A Study on the Cementitious Materials as Carbon Capture Materials- Micro-Structure Change by Carbonation Curing
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
최근 산업 활동에 의해 발생하는 CO2에 대한 처리와 산업부산물에 대한 유효처리 및 자원화 방안이 시급히 요구되고 있다. 본 연구는 콘크리트 혼합재료로 활용이 가능한 산업부산물를 대상으로 탄산화 양생에 의한 건설재료로의 적용성 평가를 목적으로 한다. 이러한 목적을 위해 연구용 시멘트(research cement, RC), 고로슬래그 미분말(GGBFS) 및 유동층 보일러 애시(CFBC)를 대상으로 탄산화 양생에 의한 물리ꞏ화학적 변화를 비교 검토하였다. 페이스트 내부의 미세조직 변화를 살펴보기 위해 XRD, SEM 분석을 수행하였다. 실험결과 탄산화 양생을 통해 생성된 반응 생성물인 탄산칼슘은 페이스트 내부의 공간을 채우며 밀도가 높은 미세 구조를 형성함을 확인하였다. 또한, CO2 양생시간이 길어짐에 따라 탄산칼슘 결정이 함께 성장하여 밀실한 미세구조를 이루는 것을 확인하였다.
Abstract
Recently, there has been a growing interest in the study of treatment of CO2 generated by industrial activities and resource recycling ofindustrial byproducts. The aim of this study is to investigate the applicability of industrial byproducts that can be used as concrete mixed materialsby carbonation curing. For this purpose, the physical and chemical changes of the pastes with research cement(RC), blast furnace slag powder (GGBFS)and circulating fluidized bed combustion ashes (CFBC) were evaluated by carbonation curing. XRD and SEM analyzes were performed to investigatemicro-structural changes. As a result, it was confirmed that calcium carbonate, which is a reaction product produced by carbonation curing, filled thespace inside the paste and formed a dense micro-structure. Also, as the CO2 curing time increased, it was confirmed that calcium carbonate crystalswere grown together to form a dense micro-structure.
참고문헌 (12)
- Chen, K. -W., "High-gravity carbonation of basic oxygen furnace slag for CO2 fixation and utilization in blended cement", Journal of Cleaner Production, 124, pp.350~360 (2016)
- Pan, S. -Y., "Kinetics of carbonation reaction of basic o. xygen furnace slags in a rotating packed bed using the surface coverage model:Maximization of carbonation conversion", Applied Energy, 113, pp.267~276 (2014)
- Zhihua, Z., "Carbon dioxide storage schemes:Technology, assessment and deployment", Journal of Cleaner Production, 142, pp.1055~1064 (2017)
- Dijkstra, J. J., "Effect of accelerated aging of MSWI bottom ash on the leaching mechanisms of copper and molybdenum", Environmental Science & Technology, 40, pp.4481~4487 (2006)
- Eloneva, S., "Co-utilisation of CO2 and steelmaking slags for production of pure CaCO3 - legislative issues", Journal of Cleaner Production, 18, pp.1833~1839 (2010)
- Huntzinger, D. N., "Carbon dioxide sequestration in cement kiln dust through mineral carbonation", Environmental Science &Technology, 43, pp.1986~1992 (2009)
- Thiery, M., "Carbonation kinetics of a bed of recycled concrete aggregates: a laboratory study on model materials", Cement and Concrete Research, 46, pp.50~65 (2013)
- Ukwattage, N. L., "A laboratory scale study of the aqueous mineral carbonation of coal fly ash for CO2 sequestration", Journal of Cleaner Production, 103, pp.665~674 (2015)
- Zhan, B. J., "CO2 curing for improving the properties of concrete blocks containing recycled aggregates", Cement & Concrete Composites, 42, pp.1~8 (2013)
- Xuan, D., "Development of a new generation of eco-friendly concrete blocks by accelerated mineral carbonation", Journal of Cleaner Production, 133, pp.1235~1241 (2016)
- El-Hassan, H., "Carbon storage through concrete block carbonation curing", Journal of Clean Energy Technologies, 2(3), pp.287~291 (2014)
- Zhan, B. J., "Effect of curing parameters on CO2 curing of concrete blocks containing recycled aggregates", Cement & Concrete Composites, 71, pp.122~130 (2016)