Cyclic Wetting and Drying Behaviour of Coal Wash Treated Black Soil
Publication: Geo-Congress 2023
ABSTRACT
The abundance of granular waste materials coupled with their successful reuse in construction fills has provided sustainable alternatives to a rather expensive quarried natural rock aggregate. This study focuses on the application of coal wash (CW) as an admixture to mitigate the undesirable shrink and swell characteristics of expansive black soils under unconfined compression loading. CW is a by-product of the coal industry that requires an enormous area of landfill for storage. These landfills pose a serious environmental problem because coal is still being produced in many parts of the world. A series of unconfined compression tests were conducted on CW-soil mixtures with and without wet and dry cycles; these wet and dry cycles mimic the shrink and swell characteristics of expansive soil observed in the field. Our findings show that cracking and shrinking impact the fabric of CW-soil over time, which reduces their shear strength. The incorporation of CW into black soil reduces its susceptibility to shrinkage and swelling during wet and dry cycles. The relationship between the shear strength reduction after repeated wetting and drying are proposed for consideration in the design. The study shows that the addition of CW can improve the geotechnical properties of expansive soils under unconfined compression and curtail the degradation of the areas used to store the CW.
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REFERENCES
Alazigha, D. P., Indraratna, B., Vinod, J. S., and Heitor, A. 2018. Mechanisms of stabilization of expansive soil with lignosulfonate admixture. Transportation Geotechnics, 14, 81–92.
ASTM. ASTM D698. 2000. Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3)). West Conshohocken, PA 19428-2959: ASTM International.
ASTM. ASTM D1140-17. 2017. Standard Test Methods for Determining the Amount of Material Finer than 75-um (No. 200) Sieve in Soil by Washing. West Conshohocken, PA: ASTM International.
ASTM. ASTM D4318-05. 2005. Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils. ASTM International, West Conshohocken, PA.
Department of Transport and Regional Services. 2007. Contributing to the Best North South Rail Corridor. Australia.
Dzaklo, C. K., Rujikiatkamjorn, C., Indraratna, B., and Kelly, R. 2021. Cyclic behaviour of compacted black soil-coal wash matrix. Engineering Geology, 106385.
Estabragh, A., Parsaei, B., and Javadi, A. 2015. Laboratory investigation of the effect of cyclic wetting and drying on the behaviour of an expansive soil. Soils and foundations, 55, 304–314.
Ferreira, T. M., Teixeira, P. F., and Cardoso, R. 2011. Impact of bituminous subballast on railroad track deformation considering atmospheric actions. Journal of geotechnical and geoenvironmental engineering, 137, 288–292.
Firoozi, A. A., Olgun, C. G., Firoozi, A. A., and Baghini, M. S. 2017. Fundamentals of soil stabilization. International Journal of Geo-Engineering, 8, pp. 1–26.
Jung, S., and Santagata, M. 2014. Expansive behavior of coal mine spoils treated with calcium-based stabilizers. Engineering geology, 175, 46–57.
Kaliboullah, C., Indraratna, B., Rujikiatkamjorn, C., and Heitor, A. 2015. Evaluation of coalwash as a potential structural fill material for port reclamation. 12th Australia New Zealand Conference on Geomechanics (ANZ 2015): “The Changing Face of the Earth-Geomechanics & Human Influence”. New Zealand: The Conference Company Ltd.
Ma, B., Cai, K., Zeng, X., Li, Z., Hu, Z., Chen, Q., He, C., Chen, B., and Huang, X. 2021. Experimental Study on Physical-Mechanical Properties of Expansive Soil Improved by Multiple Admixtures. Advances in Civil Engineering, 2021.
Mckenzie, D. C. 1998. SOILpak for cotton growers. Third ed. Australia: NSW Department of Primary Industries.
Nelson, J., and Miller, D. J. 1997. Expansive soils: problems and practice in foundation and pavement engineering, John Wiley & Sons.
Osman, N., Mcmanus, K. J., and Ng, A. Management and analysis of data for damage of light structures on expansive soils in Victoria, Australia. Proceedings of the 1st International Conference on Structural Condition Assessment, Monitoring and Improvement: 12-14 December 2005, Perth, Western Australia, 2005. CI-Premier Pte Ltd.
Seed, H. B., Woodward, R. J., Jr., and Lundgren, R. 1962. Prediction of swelling potential for compacted clays. Journal of the soil mechanics and foundations division, 88, 53–87.
Shahsavani, S., Vakili, A. H., and Mokhberi, M. 2020. The effect of wetting and drying cycles on the swelling-shrinkage behavior of the expansive soils improved by nanosilica and industrial waste. Bulletin of Engineering Geology and the Environment, 79, 4765–4781.
Soltani, A., Deng, A., Taheri, A., Mirzababaei, M., and Vanapalli, S. K. 2019. Swell–shrink behavior of rubberized expansive clays during alternate wetting and drying. Minerals, 9, 1–18.
Sridharan, A., and Sivapullaiah, P. V. 2005. Mini compaction test apparatus for fine grained soils. Geotechnical Testing Journal, 28, 240–246.
Wang, G., and Wei, X. 2015. Modeling swelling–shrinkage behavior of compacted expansive soils during wetting–drying cycles. Canadian Geotechnical Journal, 52, 783–794.
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Published online: Mar 23, 2023
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