한국건설순환자원학회논문집 (Journal of the Korean Recycled Construction Resources Institute)

한국건설순환자원학회 (Korean Recycled Construction Resources Institute)
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CO2 고정 탈황석고를 사용한 고로슬래그 미분말의 특성 및 현장실증

Basic Characteristics and Field Demonstration Test of Ground Granulated Blast Furnace Slag using CO2 Fixed Desulfurized Gypsum

  • 이창우 ((주)삼표산업 시험평가팀) ;
  • 최훈국 ((주)삼표산업 분체모르타르 S&I팀) ;
  • 서성관 (한국세라믹기술원 저탄소.디지털전환사업단) ;
  • 박종호 ((주)삼표산업 분체모르타르 S&I팀)
  • Chang-Woo Lee (Test Evaluation Team, SAMPYO Industry Co., Ltd) ;
  • Hoon-Guk Choi (CM-DM S&I Team, SAMPYO Industry Co., Ltd) ;
  • Sung-Kwan Seo (Carbon Neutrality & Materials Digitalization Division, KICET) ;
  • Jong-Ho Park (CM-DM S&I Team, SAMPYO Industry Co., Ltd)
  • 투고 : 2024.07.24
  • 심사 : 2024.08.06
  • 발행 : 2024.09.30
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초록

본 연구에서는 CO2 고정화 탈황석고(CFDG)를 고로슬래그 미분말에 적용하여 모르타르 및 콘크리트의 기초 물성을 검토하였으며, 현장실증을 통한 적용성 평가를 진행하였다. CFDG는 탈황석고(DG) 대비 결정상이 비교적 둥근 형상을 띄며, 주요 구성성분으로는 CaO 및 SO3이다. 활성도 지수 및 콘크리트 실험 결과, 플로우는 증가하는 경향이며, 압축강도는 동등 수준을 발현하였고, 기계화 경작로에 적용하기 위한 콘크리트의 목표 물성인 슬럼프 120±25 mm, 압축강도 24 MPa에 대하여 만족하였다. 24년도 2월 당진시 석문면에서 기계화 경작로 현장실증을 진행하였으며, 양생조건에 따른 압축강도, 굳지않은 콘크리트의 물성 및 내구성 검토 결과 기존 타설되어지는 레미콘과 유사 성능을 보이고, KS 규격 및 시멘트 콘크리트 포장공사 규격을 만족하여 고로슬래그 미분말(GGBS)의 자극재로써 DG를 CFDG로 대체가능하며, 사용에 따른 탄소 저감을 기대할 수 있을 것으로 사료된다.

In this study, CO2-immobilized desulfurized gypsum(CFDG) was applied to ground granulated blast furnace slag to examine the basic properties of mortar and concrete, and to evaluate its responsiveness through field demonstration test. CFDG had a relatively circular composition compared to desulfurized gypsum(DG), and its main components were CaO 47.6 % and SO3 22.1 %. As a result of mortar and concrete tests, the flow tended to increase and the compressive strength was at the same level. In addition, the target properties of concrete for application to farm roads, which were a slump of 120±25 mm and a compressive strength of 24 MPa, were satisfied with a slump of 135 mm and a compressive strength of 42.1 MPa at 28 days. In February 2024, an on-site demonstration of a farm road was conducted in Seongmun-myeon, Dangjin-si, and as a result of reviewing the compressive strength according to curing conditions, the physical properties and durability of unhardened concrete, the target results were satisfied, expanding the use of CFDG by applying fine powder of blast furnace slag and carbon reduction can be expected.

키워드

과제정보

본 연구는 중소벤처기업부의 규제자유특구혁신사업육성 지원에 의해 수행되었습니다.

참고문헌

  1. An, J.J. (2023). Greenhouse gas reduction methodology developement for mineral carbonation technology using flue gas desulfurization gypsum, Journal of Energy & Climate Change, 18(2), 71-85 [in Korean].
  2. KCS 44 50 15 (2023). Korea Construction Standard Center.
  3. Lee, M.G. (2013). Mineral Carbonation using FGD Gypsum for the Reduction of CO2, Ph.D Thesis, University of Science and Technology, 148 [in Korean].
  4. Lee, W.G., Kim, J.H., Kim, G.N., Song, M.S. (2021). Effect of blast furnace slag and desulfurized gypsum on hardening of CFBC boiler coal ash, Journal of the Korean Recycled Construction Institute, 9(4), 443-450 [in Korean].
  5. Park, C.J., Park, J.H., Seo, S.K. (2023). Basic characteristics of slag cement using CO2 fixed desulfurized gypsum, Journal of the Korean Recycled Construction Institute, 11(1), 25-31 [in Korean].
  6. Park, C.J., Park, Y.S., Park, J.H., J,Y. (2022). Basic characteristics of slag cement according to the types of recycled gypsum, Proceedings of the Korea Concrete Institute, 34(2), 695-696 [in Korean].
  7. Yang, H.M. (2024). [Construction Material] Carbon reduction plan for construction materials using construction waste and industrial by-products, National Territory, 507, 24-31 [in Korean].
  8. Yu, H.J., Seo, S.K., Park, K.D., Kwon, H.J., Kim, J.H. (2024). Analysis of mechanical properties of sCFDGndary concrete products using CO2 captured material, Journal of the Korean Crystal Growth and Crystal Technology, 34(2), 66-72 [in Korean].