Effect of Additives on Consistency Limits of Red Mud Waste: A Comparative Study
Knowledge of consistency limits is considered important in predicting the engineering properties (viz., swelling, shrinkage, strength, etc.) as well as for identifying and classifying the geomaterials. Determination of these consistency indices becomes even more imperative when selecting geomaterials (soil or waste) as a resource material for constructing earthen structures. This paper focuses on evaluating the consistency limits (or Atterberg’s limits such as liquid limit, plastic limit, and plasticity index) of red mud waste admixed with oxalic acid, gypsum, sodium silicate, and the combination of fly ash and gypsum additives in different proportions, in a comprehensive way. The results show significant variations in the value of Atterberg’s limits of ameliorated red mud waste vis-à-vis with that of raw waste. It has been inferred that the results reported in the study are of great help in asserting the suitability of the red mud waste in geotechnical engineering applications.
KeywordsConsistency limits Red mud Chemical additives Waste utilization
The research work presented in the paper was carried out with the financial support provided by DST-SEB, Govt. of India. Authors greatly acknowledge and thank the DST- SERB, Government of India, for the financial support for carrying out this research work.
- 3.Reddy NG, Rao BH (2016) Evaluation of the compaction characteristics of untreated and treated red mud. Geotech Spec Publ 272:23–32Google Scholar
- 4.Reddy NG, Rao BH (2018) Characterization of settled particles of the red mud waste exposed to different aqueous environmental conditions. Indian Geotech J, 15 pagesGoogle Scholar
- 5.Kirkpatrick DB (1996) Red mud product development. Light Metals, In: Proceedings of the technical sessions at the 125th TMS annual meeting; TMS light metals committee, pp. 75–80Google Scholar
- 6.Somogyi F (1976) Dewatering and drainage of red mud tailings. PhD Dissertation, Department of Civil Engineering; University of Michigan; Ann Arbor, MI; 291 pagesGoogle Scholar
- 7.Villar LFS, Campos TMP, Azevedo RF, Zornberg JG (2009) Influence of laboratory techniques on the geotechnical characterization of mining and industrial wastes. In: 17th International Conference on Soil Mechanics and Geotechnical Engineering, pp. 186–189, Alexandria, EgyptGoogle Scholar
- 8.Gore MS, Gilbert RB, McMillan I, Isovitsch PSL (2016) Geotechnical characterization of compacted bauxite residue for use in levees. Geotech Spec Publ 270:299–310Google Scholar
- 11.Rai S, Wasewar KL, Mukhopadhyay J, Yoo CK, Uslu H (2012) Neutralization and utilization of red mud for its better waste management. Arch Environ Sci 6:13–33Google Scholar
- 12.Rao BH, Reddy NG (2017) Zeta potential and particle size characteristics of red mud waste. In: Babu GLS, et al (eds) Geoenvironmental practices and sustainability, developments in geotechnical engineering, pp. 69–89, Springer, SingaporeGoogle Scholar
- 18.ASTM D4318-17 (2017) Standard test methods for liquid limit, plastic limit, and plasticity index of soils, ASTM International, West Conshohocken, PAGoogle Scholar