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With the rapid advancement of global industrialization, the emission of bulk solid waste continues to increase annually. Currently, the traditional landfill-based treatment method not only leads to significant resources wastage but also poses substantial risks to the ecological environment and human health. Thus, there is an urgent need for efficient treatment method to comprehensively utilize solid waste. Ceramsite, an artificial ceramic particle known for its lightweight, large specific surface area, and strong adsorption capacity, is widely utilized in practical engineering applications. Using solid waste rich in silicon, aluminum, calcium, and other mineral elements as raw materials for ceramsite production enables the large-scale and efficient utilization of industrial solid waste, offering considerable social, environmental, and economic benefits. The preparation of sintered ceramsite is mainly influenced by some key factors such as the ratio of solid waste raw materials and the relative content of ceramic, fluxing, and gas-generating components. Meanwhile, the preparation of non-sintered ceramsite is substantially impacted by the curing system including temperature, humidity and time. Therefore, this paper reviews the key preparation processes and application fields of sintered and non-sintered ceramsite. The effects coal-based, waste slag-based, tailings-based and sludge-based solid wastes as primary raw materials on the gas-liquid phase equilibrium in sintered ceramsite are summarized, and the complementary synergistic effects among solid wastes are discussed. Additionally, the interrelationship between internal reaction products and pore structure in non-sintered ceramsite balls under different curing systems is compared and analyzed. The pretreatment and improvement measures for solid waste ceramsite concrete are reviewed. Finally, the advantages of using solid waste ceramsite in water treatment and sound-absorbing materials are discussed. This paper systematically elucidates the features of diverse solid waste materials and curing methods from both preparative and applicational viewpoints, providing insights to facilitate future research on resource utilization of solid wastes in ceramsite. © 2025 Elsevier Ltd
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Materials Today Communications
Year: 2025
Volume: 49
3 . 7 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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