Guest Editor(s)
Prof. Dr. Shouwei Jian
Email: jianshouwei@126.com
Affiliation: School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
Homepage:
Research Interests: functional wall materials, polymer-modified cement-based materials, intelligent building materials, preparation of ecological building materials by solid waste recycling
Dr. Junqi Zhao
Email: zhaojunqi@bnbm.com.cn
Affiliation: 1. CNBM Innovation Science & Technology Research Institute Co., Ltd., Beijing, China
2. Beijing New Building Materials Public Limited Company,
Beijing,
China
Homepage:
Research Interests: gypsum-based composite material, functional composite building material, aerogel thermal insulation building material
Prof. Dr. Jianping Zhu
Email: jianpingzhu@hpu.edu.cn
Affiliation: School of Materials Science and Engineering, Henan Polytechnic University
Homepage:
Research Interests: resource utilization of solid wastes, nano-modified cementitious materials, particle size-controlled cementitious materials
Prof. Dr. Hongyun Hu
Email: hongyunhu@hust.edu.cn
Affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, China
Homepage:
Research Interests: salt energy storage and multi-purpose utilization, thermal treatment of waste polymers, resource-oriented disposal of high-salt ash and slag
Dr. Rendi Wu
Email: rendiwu@whpu.edu.cn
Affiliation: School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, China
Homepage:
Research Interests: resource utilization of solid waste, precast concrete structures, marine concrete materials and structures
Summary
The global gypsum industry generates several hundred million tonnes of solid wastes annually, including flue gas desulfurization gypsum, phosphogypsum, titanium gypsum, and fluorogypsum. Phosphogypsum alone exceeds 230 million tonnes per year, with accumulated stockpiles surpassing 6 billion tonnes, while global FGD gypsum production reached approximately 255 million tonnes in 2020. However, the global comprehensive utilization rate of phosphogypsum is less than 30%. The vast accumulation of these wastes poses severe environmental challenges, necessitating large-scale valorization strategies to achieve meaningful waste reduction and resource recovery. Recent advances in pretreatment technologies, synergistic activation, and co-processing with other industrial solid wastes have enabled the development of gypsum-based materials for bulk engineering applications, including cementitious supplementary materials, mine backfill, road base and subbase materials, and stabilized soils. This Special Issue aims to provide a platform for research on the bulk valorization of gypsum-based solid wastes, publishing full-chain findings from materials characterization and mix design to field implementation and long-term performance monitoring, and contributing to the circular economy and carbon neutrality goals of the construction sector.
Suggested themes include, but are not limited to:
- Pretreatment, purification, and impurity control of multi-source gypsum solid wastes for bulk utilization
- Gypsum-based supplementary cementitious materials and cement retarders
- Synergistic co-utilization with other industrial solid wastes (slag, fly ash, steel slag, etc.)
- Gypsum-based materials for mine backfill and underground engineering
- Gypsum-stabilized materials for road construction and foundation engineering
- Durability, volume stability, and long-term service performance under various environmental conditions
- Field applications, pilot-scale demonstrations, and case studies
- Life-cycle assessment, carbon footprint analysis, and environmental impact evaluation
Keywords
gypsum-based solid wastes, bulk valorization, engineering applications, pretreatment, synergistic co-utilization, supplementary cementitious materials, mine backfill, road base materials, durability, life-cycle assessment, carbon footprint
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