Recycled red mud as an useful geotechnical material
Recycled red mud as an useful geotechnical material
Red mud (RM) is an extractive waste from Bayer process in alumina production. The most conventional methods of RM disposal are tailing dams, or dry storage, both of which raise environmental concerns due to the high alkalinity of RM and the presence and leaching of potentially hazardous elements (PTEs). Due to its fine-grained nature and poor mechanical properties, as well as leaching of potentially hazardous substances, RM cannot be used by itself. Properties of the RM can be improved, by mixing it with hydraulic or pozzolanic binders, such as calcareous ashes or steelmaking slag, to produce mechanically stable and durable composites for earthworks. On the other hand, RM can also serve as an immobilization additive for remediation of contaminated soils. Two different approaches for useful utilization of RM are presented based on results of laboratory research and a real case study, opening of new possibilities for conserving natural resources and reducing environmental hazards of RM deposits.
P. Pavsic; M. duric; M. Kosir; A. Mauko Pranjic; A. Mladenovic; P. Oprckal; S. Sersen; V. Zalar Serjun
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
E - Environment, water and energy
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