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Research Article

A Study on the Chemical Composition of Industrial by-Products from Different Sources

산업부산물 발생처에 따른 화학성분 조사 연구

Kwang-Wu Lee1*
,
Jae-Hyun Park2
,
Se-Gwan Seo3
,
Kyung-Ju Mun4
이 광우1*
,
박 재현2
,
서 세관3
,
문 경주4
1Member, Research Fellow, Department of Geotechnical Engineering Research, 283 Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea.
2Member, Senior Research Fellow, Department of Geotechnical Engineering Research, 283 Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea
3Member, Principal Researcher, ZIAN Company Ltd., 105-8 Sambong-ro, Samrye-eup, Wanju-gun, Jeollabuk-do 55340, Republic of Korea.
4Non-Member, President, CMD-Group, 545 Songdeoksinsong-gil, Cheongso-myeon, Boryeong-si, Chungcheongnam-do 33419, Republic of Korea
*Corresponding Author
30 December 2025. pp. 31-39
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Abstract

This study analyzed the chemical composition of various industrial by-products according to their source. Chemical composition analysis of pulverized coal (PC) boiler fly ash revealed that the major chemical components generally comply with KS L 5405, making it suitable for use as a cement admixture. However, some sources did not comply with KS L 5405, necessitating selective application. Circulating fluidized bed combustion (CFBC) boiler ash generally does not comply with KS L 5405 in chemical composition and varies significantly depending on the source. Therefore, to effectively utilize CFBC ash, a continuous chemical composition analysis by source and time of generation is necessary to select usable materials. Furthermore, since the performance level required for inorganic binders in the field of geotechnical engineering field is lower than that of general cement or concrete, it is expected that CFBC ash can be selectively utilized as an inorganic binder admixture or aggregate substitute for ground improvement and reinforcement.

Keywords
Indestrial by-product
PC fly ash
CFBC ash
Blast furnace slag
Chemical composition analysis

본 연구에서는 다양한 산업부산물에 대해 발생처에 따른 화학성분을 분석하고 그 활용방안을 검토하였다. 미분탄 보일러 플라이애시에 대한 화학성분 분석 결과, 주요 화학성분 함량이 대체로 KS L 5405에 부합하여 시멘트 혼화재로 활용이 가능하나, 일부 발생처의 경우에는 KS L 5405에 부합하지 않는 것으로 분석되어 선별 적용이 필요한 것으로 조사되었다. 이에 반해, 순환유동층(CFBC) 보일러 연소재는 화학성분 조성이 대체로 KS L 5405에 부합하지 않고, 발생처에 따라서도 크게 차이를 보인다. 따라서 CFBC 연소재의 유효활용을 위해서는 발생처 및 발생시기에 따른 화학성분 분석을 지속적으로 실시하여 활용 가능한 재료를 선별할 필요가 있다. 또한 CFBC 연소재는 품질 편차가 크고 유해물질 기준과 수경성 확보가 어려워 대부분 매립 또는 소각처리 되고 있다. 그러나, 지반분야는 무기결합재의 요구 성능 수준이 일반적인 시멘트나 콘크리트에 비해 작고 유동적이기 때문에, CFBC 연소재도 지반 개량 및 보강 용도의 무기결합재 원료나 골재 대체재료로 선별적으로 활용이 가능할 것으로 판단된다.

References
1

Czigler, T., Reiters, S., Schulze, P. and Somers, K. (2020), “Laying the Foundation for Zero-Carbon Cement”, Chicago, IL: McKinsey and Company. Available online at: https://www.mckinsey.com/industries/chemicals/our-insights/laying-the-foundation-for-zero-carbon-cement (accessed March 25, 2021)

2

Ham, T. G., Seo, S. G. and Cho, D. S. (2021), “Evaluation of Applicability of CMD-SOIL Recycled Resources as Ground Improvement Material for Deep Mixing Method”, Journal of the Korea Geosynthetics Society, Vol.20, No.4, pp.43-52.

3

Jung, E. and Kim, J. (2022), “Greenhouse Gas Emission Reduction and Economic Benefit Evaluation of Carbon Mineralization Technology using CFBC Ash”, Resoures Recycling, Vol.31, No3, pp.40-52

10.7844/kirr.2022.31.3.40
4

Kim, H. J. and Mun, K. J. (2017), “Utilization of Circulating Fluidized Bed Combustion (CFBC) Fly Ash for Dredged Soils Construction Applications”, Magazine of RCR, Vol.12, No.2, pp.40-49.

5

KS L 5405 (2023), Fly ash, Korean Standards Association, Seoul, South Korea. (in Korean)

6

Lee, K. W., Park, J. H., Seo, S. G. and Kang, K. N. (2024), “A Study on the Engineering Properties and Field Applicability of Inorganic Binder with Industrial by-Products”, Journal of the Korean Geosynthetics Society, (In press).

10.12814/JKGSS.2024.23.4.041
7

Lee, K. W., Park, J. H., Lee, Y. W. and Cho, D. S. (2023), “A Study on the Utilization Method in the SCW Method using Supplementary Cementitious Materials”, Journal of the Korean Geosynthetics Society, Vol.22 No.3, pp.87-95.

8

Maeng, J. H., Kim, T. Y., Suh, D. H. (2014), Minimizing Environmental Impact in Accordance with the Thermal Power Plant Ash Management (I). Korea Environment Institute. (Korean Literature)

9

Seo, S. G., Kim, Y. S. and Cho, D. S. (2020), “A Study on the Field Application of Ground Stabilizer using Circulating Resource for Improvement of Soft Ground in Saema- ngeum Area”, Journal of the Korean Geosynthetics Society, Vol.19, No.1, pp.103-110. (in Korean)

10

Seo, S. G., Song, S. H. and Cho, D. S. (2021), “Analysis of the Applicability of Ground Stabilizer Using Recycled Resources as Prebored Piles”, Journal of the Korean Recycled Construction Resources Institute, Vol.9, No.3, pp.287-294.

Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 24
  • No :4
  • Pages :31-39
  • Received Date : 2025-11-03
  • Revised Date : 2025-11-23
  • Accepted Date : 2025-11-24
  • DOI :https://doi.org/10.12814/jkgss.2025.24.4.031
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