Abstract
Contamination of soils due to caustic alkali has significant effect on the volume change behavior of soils, which in turn can have direct bearing on their geotechnical properties and can affect the stability of structures built on them. The existing literature strongly highlights the fact that failure of structures along with alterations in mineralogy and morphology occurs due to NaOH contamination. Efforts were made to simulate long-term effects of NaOH on mineralogical and morphological alteration by varying the experimental conditions in laboratory, so that preventive measures can be taken at a much faster rate. On the other hand, KOH is another strong alkali which is extensively used for commercial purposes. However, no studies were reported in literature to highlight the adverse effects of KOH. Thus, to understand the long-term effect of KOH on mineralogical and morphological alterations, a preliminary investigation is carried out in the present study by considering different experimental conditions (field contamination, long-term interactions, and temperature effects at 4 N KOH). Two types of kaolinitic clays, namely red earth and kaolin with varying mineral content were selected for the study. Micro-level investigations (XRD and SEM) have been carried out to noticeably understand impact of varying experimental conditions at particle-level interaction. Test results indicated that neogenic formations varied with type of experimental conditions along with variation in the morphology of soils. Further, it is observed that, long-term effects of KOH can be simulated within short period of time by conducting the experiments at elevated temperature.
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References
Bauer A, Berger G (1998) Kaolinite and smectite dissolution rate in high molar KOH solutions at 35° and 80 °C. Appl Geochem 13:905–916
Bauer A, Velde B, Berger G (1998) Kaolinite transformation in high molar KOH solutions. Appl Geochem 13(5):619–629
Boussen S, Sghaier D, Chaabani F, Jamoussi B, Messaoud SB, Bennour A (2015) The rheological, mineralogical and chemical characteristic of the original and the Na2CO3—activated Tunisian swelling clay (Aleg formation) and their utilization as drilling mud. Appl Clay Sci 118:344–353
Chunikhin VG, Mavrodi VK, Kramarenko OA, Dobromil’skay NG (1998) Effect of leakage of industrial alkali solutions on the construction properties of soils. Soil Mech Found Eng 25(6):559–561
Cuadros J, Linares J (1996) Experimental kinetic study of the smectite-to-illite transformation. Geochim Cosmochim Acta 60:439–453
Ibrahim K (2004) Mineralogy and chemistry of natrolite from Jordan. Clay Miner 39:47–55
Kabanov VM, Lebedeva GA, Finke’shtein LI, Tkachenko GP, Shenin OS (1977) Swelling of soils due to wetting with solutions. Fundamenty Mekh Gruntov 5:31–32
Kawano M, Tomita K (1997) Experimental study on the formation of zeolites from Obsidian by interaction with NaOH and KOH solutions at 150 °C and 200 °C. Clay Clay Miner 45(3):365–377
Puppala AJ, Napat I, Rajan KV (2005) Experimental studies on ettringite- induced heaving in soils. J Geotech Geoenviron Eng 131(3):325–337
Sivapullaiah PV, Allam MM, Sankara G (2004) Structural distortion due to heaving of foundation soil induced by alkali contamination. In: Proceedings of the international conference on structural and foundation failures, Singapore, vol 1, pp 601–611
Sruthi PL, Reddy HPP (2017) Characterization of kaolinitic clays subjected to alkali contamination. Appl Clay Sci 146:535–547
Sruthi PL, Reddy HPP (2018) Mineralogical and morphological transformations of alkali contaminated kaolinitic clays under different experimental conditions. In: Proceedings of the international conference on advances in concrete, structural, & geotechnical engineering, February, BITS Pilani, India
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Lakshmi Sruthi, P., Hari Prasad Reddy, P. (2021). Micro-level Exploration of KOH-Contaminated Kaolinitic Clays Under Different Experimental Conditions. In: Latha Gali, M., Raghuveer Rao, P. (eds) Problematic Soils and Geoenvironmental Concerns. Lecture Notes in Civil Engineering, vol 88. Springer, Singapore. https://doi.org/10.1007/978-981-15-6237-2_67
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DOI: https://doi.org/10.1007/978-981-15-6237-2_67
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