Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials
Alkali-activated materials prepared from industrial solid wastes have excellent performance, advancing the cement industry towards achieving the Net-zero emissions goal. However, the diverse synergistic effects of various solid waste types necessitate further investigation. In this study, the effect...
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525000580 |
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| author | Xingyi Wang Jinzhuang Lv Jingchao Yang Jiamin Zhu Bin He Xiaoyuan Wang Pengju Han Xiaohong Bai |
| author_facet | Xingyi Wang Jinzhuang Lv Jingchao Yang Jiamin Zhu Bin He Xiaoyuan Wang Pengju Han Xiaohong Bai |
| author_sort | Xingyi Wang |
| collection | DOAJ |
| description | Alkali-activated materials prepared from industrial solid wastes have excellent performance, advancing the cement industry towards achieving the Net-zero emissions goal. However, the diverse synergistic effects of various solid waste types necessitate further investigation. In this study, the effect of different content (20 %, 30 %, 40 %, and 50 %) of ground granulated blast furnace slag (GGBFS) on the mechanical performance of circulating fluidized bed fly ash (CFBFA)-GGBFS-lime ternary cementitious materials (CGL) was investigated. The synergistic mechanism of GGBFS and CFBFA was elucidated through analyses of hydration heat, XRD, FT-IR, and SEM-EDS tests. The results indicated that GGBFS facilitated sulfate consumption during the early hydration stage, promoting the dissolution of CFBFA. This, in turn, enhanced the availability of sulfate, calcium, and active silicon-aluminum phases for CGL hydration, ultimately leading to an improvement in their overall hydration degree. Conclusively, the optimal synergistic effect between CFBFA and GGBFS was observed at a GGBFS content of 40 %, with a compressive strength of 32.84 MPa at 28 days. However, excessive GGBFS content (50 %) could lead to the premature formation of a “hydration barrier membrane”, negatively affecting the sustained hydration of CGL. This work presented an eco-friendly approach to the resource utilization of CFBFA, particularly in terms of mineral resource consumption, and held promising prospects for applications in projects. |
| format | Article |
| id | doaj-art-950a388f6d4b4c6caadd6eca077e6f15 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Case Studies in Construction Materials |
| spelling | doaj-art-950a388f6d4b4c6caadd6eca077e6f152025-01-18T05:04:41ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04259Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materialsXingyi Wang0Jinzhuang Lv1Jingchao Yang2Jiamin Zhu3Bin He4Xiaoyuan Wang5Pengju Han6Xiaohong Bai7College of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCollege of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCollege of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCollege of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCollege of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCorresponding authors.; College of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCorresponding authors.; College of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCollege of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaAlkali-activated materials prepared from industrial solid wastes have excellent performance, advancing the cement industry towards achieving the Net-zero emissions goal. However, the diverse synergistic effects of various solid waste types necessitate further investigation. In this study, the effect of different content (20 %, 30 %, 40 %, and 50 %) of ground granulated blast furnace slag (GGBFS) on the mechanical performance of circulating fluidized bed fly ash (CFBFA)-GGBFS-lime ternary cementitious materials (CGL) was investigated. The synergistic mechanism of GGBFS and CFBFA was elucidated through analyses of hydration heat, XRD, FT-IR, and SEM-EDS tests. The results indicated that GGBFS facilitated sulfate consumption during the early hydration stage, promoting the dissolution of CFBFA. This, in turn, enhanced the availability of sulfate, calcium, and active silicon-aluminum phases for CGL hydration, ultimately leading to an improvement in their overall hydration degree. Conclusively, the optimal synergistic effect between CFBFA and GGBFS was observed at a GGBFS content of 40 %, with a compressive strength of 32.84 MPa at 28 days. However, excessive GGBFS content (50 %) could lead to the premature formation of a “hydration barrier membrane”, negatively affecting the sustained hydration of CGL. This work presented an eco-friendly approach to the resource utilization of CFBFA, particularly in terms of mineral resource consumption, and held promising prospects for applications in projects.http://www.sciencedirect.com/science/article/pii/S2214509525000580Circulating fluidized bed fly ashGround granulated blast furnace slagSynergistic effectHydration processMicroscopic analysis |
| spellingShingle | Xingyi Wang Jinzhuang Lv Jingchao Yang Jiamin Zhu Bin He Xiaoyuan Wang Pengju Han Xiaohong Bai Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials Case Studies in Construction Materials Circulating fluidized bed fly ash Ground granulated blast furnace slag Synergistic effect Hydration process Microscopic analysis |
| title | Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials |
| title_full | Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials |
| title_fullStr | Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials |
| title_full_unstemmed | Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials |
| title_short | Synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime-activated cementitious materials |
| title_sort | synergistic effects of ground granulated blast furnace slag and circulating fluidized bed fly ash in lime activated cementitious materials |
| topic | Circulating fluidized bed fly ash Ground granulated blast furnace slag Synergistic effect Hydration process Microscopic analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525000580 |
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