Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums
This study explores the potential of waste gypsum, specifically phosphogypsum (PG) and desulfurization gypsum (DG), as alternative materials in supersulfated cement-based concrete (SSCC) for low-carbon road construction. The research comprehensively investigates the effects of PG and DG on the mecha...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2025.1539929/full |
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| author | Hui Wang Fengxia Xu Zhen Liu Shunjie Zhong Enkuo Xing Yongbin Ye Yongbin Ye Yan Zhao Chenjiang Li |
| author_facet | Hui Wang Fengxia Xu Zhen Liu Shunjie Zhong Enkuo Xing Yongbin Ye Yongbin Ye Yan Zhao Chenjiang Li |
| author_sort | Hui Wang |
| collection | DOAJ |
| description | This study explores the potential of waste gypsum, specifically phosphogypsum (PG) and desulfurization gypsum (DG), as alternative materials in supersulfated cement-based concrete (SSCC) for low-carbon road construction. The research comprehensively investigates the effects of PG and DG on the mechanical properties, corrosion resistance, and water resistance of SSCC. Additionally, the hydration kinetics and microstructure of SSC are analyzed through isothermal calorimetry, X-ray diffraction, and scanning electron microscopy. The findings show that PG-modified SSCC outperforms DG-modified SSCC, with 26.9% and 28% improvements in compressive and flexural strengths, respectively. Both PG and DG contribute to enhanced corrosion resistance, particularly in acidic environments, due to the formation of distinct hydration products compared to traditional concrete. Microstructural analysis reveals denser structures with Ettringite (AFt) and calcium silicate hydrate. Moreover, the hydration process of SSC exhibits low heat release, mitigating cracking risks in outdoor applications. A comprehensive evaluation indicates that PG-modified SSCC not only offers superior mechanical properties but also demonstrates significantly reduced carbon emissions and energy consumption, highlighting its potential as a sustainable material for road concrete. |
| format | Article |
| id | doaj-art-6483488727e848f4b7b420392c51e0fd |
| institution | Kabale University |
| issn | 2296-8016 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj-art-6483488727e848f4b7b420392c51e0fd2025-01-29T06:46:20ZengFrontiers Media S.A.Frontiers in Materials2296-80162025-01-011210.3389/fmats.2025.15399291539929Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsumsHui Wang0Fengxia Xu1Zhen Liu2Shunjie Zhong3Enkuo Xing4Yongbin Ye5Yongbin Ye6Yan Zhao7Chenjiang Li8Cangzhou Qugang Expressway Construction Co. Ltd., Cangzhou, ChinaCollege of Biological and Environmental Engineering, Tianjin Vocational Institute, Tianjin, ChinaCangzhou Qugang Expressway Construction Co. Ltd., Cangzhou, ChinaFujian Zhanglong Construction Investment Group Co. Ltd., Zhangzhou, ChinaCangzhou Qugang Expressway Construction Co. Ltd., Cangzhou, ChinaFujian Xingyan Construction Group Co. Ltd., Zhangzhou, ChinaFujian Rongguan Construction Engineering Co. Ltd., Zhangzhou, ChinaChina MCC22 Group Corporation Ltd., Tangshan, ChinaState Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin, ChinaThis study explores the potential of waste gypsum, specifically phosphogypsum (PG) and desulfurization gypsum (DG), as alternative materials in supersulfated cement-based concrete (SSCC) for low-carbon road construction. The research comprehensively investigates the effects of PG and DG on the mechanical properties, corrosion resistance, and water resistance of SSCC. Additionally, the hydration kinetics and microstructure of SSC are analyzed through isothermal calorimetry, X-ray diffraction, and scanning electron microscopy. The findings show that PG-modified SSCC outperforms DG-modified SSCC, with 26.9% and 28% improvements in compressive and flexural strengths, respectively. Both PG and DG contribute to enhanced corrosion resistance, particularly in acidic environments, due to the formation of distinct hydration products compared to traditional concrete. Microstructural analysis reveals denser structures with Ettringite (AFt) and calcium silicate hydrate. Moreover, the hydration process of SSC exhibits low heat release, mitigating cracking risks in outdoor applications. A comprehensive evaluation indicates that PG-modified SSCC not only offers superior mechanical properties but also demonstrates significantly reduced carbon emissions and energy consumption, highlighting its potential as a sustainable material for road concrete.https://www.frontiersin.org/articles/10.3389/fmats.2025.1539929/fullwaste gypsumssupersulfated cementroad concretecorrosion resistancecarbon emissions |
| spellingShingle | Hui Wang Fengxia Xu Zhen Liu Shunjie Zhong Enkuo Xing Yongbin Ye Yongbin Ye Yan Zhao Chenjiang Li Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums Frontiers in Materials waste gypsums supersulfated cement road concrete corrosion resistance carbon emissions |
| title | Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums |
| title_full | Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums |
| title_fullStr | Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums |
| title_full_unstemmed | Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums |
| title_short | Preparation and carbon emission analysis of high-performance pavement concrete using waste gypsums |
| title_sort | preparation and carbon emission analysis of high performance pavement concrete using waste gypsums |
| topic | waste gypsums supersulfated cement road concrete corrosion resistance carbon emissions |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2025.1539929/full |
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