ArticleMaterials (Basel, Switzerland)2024
Preparation and Research on Mechanical Properties of Eco-Friendly Geopolymer Grouting Cementitious Materials Based on Industrial Solid Wastes.
Article in Materials (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Mechanical Behaviour of Geopolymer Concretes with Foamed Geopolymer and Lightweight Mineral Aggregates for Chimney Flue Elements.Materials (Basel, Switzerland) · 2026Article
- Phosphate Removal by Surface-Modified Ceramsite Derived from the Synergistic Use of Multiple Solid Wastes.Materials (Basel, Switzerland) · 2026Article
- Sustainable high-performance injection geopolymers, role of GGBFS and water-to-binder ratio in strength, microstructure, and predictive modeling.Scientific reports · 2025Article
- Catalytic Combustion of Biodiesel Wastewater on Red Mud Catalyst.Materials (Basel, Switzerland) · 2025Article
- Ester-Modified Sodium Silicate Grout Material for Moraine Stabilization: Synthesis and Freeze-Thaw Resistance.Materials (Basel, Switzerland) · 2024Article
- Study on High-Ductility Geopolymer Concrete: The Influence of Oven Heat Curing Conditions on Mechanical Properties and Microstructural Development.Materials (Basel, Switzerland) · 2024Article
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6 authors.
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Abstract
Red mud (RM), a hazardous solid waste generated in the alumina production process, of which the mineral composition is mainly hematite, is unable to be applied directly in the cement industry due to its high alkalinity. With the rise of geopolymers, RM-based grouting materials play an essential role in disaster prevention and underground engineering. To adequately reduce the land-based stockpiling of solid wastes, ultrafine calcium oxide, red mud, and slag were utilized as the main raw materials to prepare geopolymers, the C-R-S (calcium oxide-red mud-slag) grouting cementitious materials. The direct impact of red mud addition on the setting time, fluidity, water secretion, mechanical properties, and rheological properties of C-R-S were also investigated. In addition, a scanning electron microscope (SEM), X-ray diffraction (XRD), three-dimensional CT (3D-CT), Fourier transform infrared spectroscopy (FT-IR), and other characterization techniques were used to analyze the microstructure and polymerization mechanism. The related results reveal that the increase in red mud addition leads to an enhanced setting time, and the C-R-S-40 grouting cementitious material (40% red mud addition) exhibits the best fluidity of 27.5 cm, the lowest water secretion rate of 5.7%, and a high mechanical strength of 57.7 MPa. The C-R-S polymer grout conforms to the Herschel-Bulkley model, and the fitted value of R
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