Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag
Phosphorus slag (PS) and carbide slag (CS) are waste residues generated in industrial production. Because PS and CS are not fully utilized, they have caused serious land occupation and resource waste. In this paper, PS and CS are used as auxiliary cementitious materials to study the modification mec...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of CO2 Utilization |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212982025000216 |
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| author | Guang-Min Liu Rui-Cong Gao Fang Liu Wen-Ping Yue Yi Yang Yong-Pang Liao Jia-Xiang Liew |
| author_facet | Guang-Min Liu Rui-Cong Gao Fang Liu Wen-Ping Yue Yi Yang Yong-Pang Liao Jia-Xiang Liew |
| author_sort | Guang-Min Liu |
| collection | DOAJ |
| description | Phosphorus slag (PS) and carbide slag (CS) are waste residues generated in industrial production. Because PS and CS are not fully utilized, they have caused serious land occupation and resource waste. In this paper, PS and CS are used as auxiliary cementitious materials to study the modification mechanism of CS on PS and the synergistic mechanism of PS and CS in cement-based materials under different curing methods. First, CS can modify PS, weaken the retarding effect of phosphorus and fluorine elements remaining in PS on cement hydration, and promote the early hydration rate; secondly, CS can activate the volcanic ash activity of PS and reduce the adverse effects of the dilution effect. In addition, the generated hydration products can generate more SiO2-Al2O3 gel with a low calcium-silicon ratio after carbonation and decalcification. Finally, the carbonated specimen shows better high-temperature mechanical properties and volume stability than the normally cured specimen, and the high-temperature strength and specimens volume initially rise and subsequently decline as temperature rises. |
| format | Article |
| id | doaj-art-b81ce21735064cc4b8781e9f2312105c |
| institution | Kabale University |
| issn | 2212-9839 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of CO2 Utilization |
| spelling | doaj-art-b81ce21735064cc4b8781e9f2312105c2025-02-09T05:00:17ZengElsevierJournal of CO2 Utilization2212-98392025-03-0193103037Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slagGuang-Min Liu0Rui-Cong Gao1Fang Liu2Wen-Ping Yue3Yi Yang4Yong-Pang Liao5Jia-Xiang Liew6International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaInternational Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, China; Corresponding authors.International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong; Corresponding authors.Phosphorus slag (PS) and carbide slag (CS) are waste residues generated in industrial production. Because PS and CS are not fully utilized, they have caused serious land occupation and resource waste. In this paper, PS and CS are used as auxiliary cementitious materials to study the modification mechanism of CS on PS and the synergistic mechanism of PS and CS in cement-based materials under different curing methods. First, CS can modify PS, weaken the retarding effect of phosphorus and fluorine elements remaining in PS on cement hydration, and promote the early hydration rate; secondly, CS can activate the volcanic ash activity of PS and reduce the adverse effects of the dilution effect. In addition, the generated hydration products can generate more SiO2-Al2O3 gel with a low calcium-silicon ratio after carbonation and decalcification. Finally, the carbonated specimen shows better high-temperature mechanical properties and volume stability than the normally cured specimen, and the high-temperature strength and specimens volume initially rise and subsequently decline as temperature rises.http://www.sciencedirect.com/science/article/pii/S2212982025000216Phosphorus slagCarbide slagCarbonation curingNormal curingSynergistic effect |
| spellingShingle | Guang-Min Liu Rui-Cong Gao Fang Liu Wen-Ping Yue Yi Yang Yong-Pang Liao Jia-Xiang Liew Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag Journal of CO2 Utilization Phosphorus slag Carbide slag Carbonation curing Normal curing Synergistic effect |
| title | Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag |
| title_full | Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag |
| title_fullStr | Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag |
| title_full_unstemmed | Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag |
| title_short | Analysis of CO2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag |
| title_sort | analysis of co2 storage efficiency and performance of low carbon cement binders containing carbide slag and phosphorus slag |
| topic | Phosphorus slag Carbide slag Carbonation curing Normal curing Synergistic effect |
| url | http://www.sciencedirect.com/science/article/pii/S2212982025000216 |
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