Abstract
Chemical amelioration of expansive clays using cement and lime was quite successful, to improve swelling and shrinkage behaviour. However, these traditional additives were energy-intensive and can produce a large amount CO2 in their production process. This paper discusses the effect of fly ash-based geopolymer on the swelling behaviour of a remoulded expansive clay. One-dimensional swell-consolidation tests were performed on fly ash-based geopolymer expansive clay blends by varying different percentages of fly ash as 5%, 10%, 15%, 20% and 25% by dry weight of soil. Rate and amount of heave, swell potential (S%) and swelling pressure (ps) were studied by varying fly ash content. Test results showed that the amount of heave and swell potential and swelling pressure of blends decreased with increasing fly ash content. The paper also explores the micro-structural behaviour of the fly ash-based geopolymer clay blends using scanning electron microscopy (SEM). The SEM results revealed that the formation of Si–O–Si bonds and flocculation of particles.
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References
Chen, F.H.: Foundations on Expansive Soils. Elsevier Scientific Publishing Co., Amsterdam (1988)
Basma, A.A., Al-Homoud, A.S., Malkawi, A.I.H., Al-Bashabsheh, M.A.: Swelling-shrinkage behavior of natural expansive clays. Appl. Clay Sci. 11(2–4), 211–227 (1996)
Nagaraju, T.V., Satyanarayana, P.V.V.: Geotechnical aspects of various constructions along the canal embankment using rice husk ash as stabilizer. In: Ground Improvement Techniques and Geosynthetics, pp. 143–150. Springer, Singapore (2019)
Kumar, K.S.R., Thyagaraj, T.: Comparison of lime treatment techniques for deep stabilization of expansive soils. Int. J. Geotechn. Eng., 1–19 (2020)
Welsh, J.P.: In situ testing for ground modification techniques. In: Use of In Situ Tests in Geotechnical Engineering, pp. 322–335. ASCE (1986)
Saride, S., Puppala, A.J., Chikyala, S.R.: Swell-shrink and strength behaviors of lime and cement stabilized expansive organic clays. Appl. Clay Sci. 85, 39–45 (2013)
Sirivitmaitrie, C., Puppala, A.J., Chikyala, V., Saride, S., Hoyos, L.R.: Combined lime and cement treatment of expansive soils with low to medium soluble sulfate levels. In: GeoCongress 2008: Geosustainability and Geohazard Mitigation, pp. 646–653 (2008)
Gartner, E.: Industrially interesting approaches to “low-CO2” cements. Cem. Concr. Res. 34(9), 1489–1498 (2004)
Bose, B.: Geo engineering properties of expansive soil stabilized with fly ash. Electron. J. Geotech. Eng. 17(1), 1339–1353 (2012)
Phanikumar, B.R., Nagaraju, T.V.: Swell and compressibility of GGBS–clay mixes in lumps and powders: effect of 4% lime. Indian Geotechn. J. 49(2), 161–169 (2019)
Nagaraju, T.V., Prasad, C.D.: New prediction models for compressive strength of GGBS-based Geopolymer clays using swarm assisted. In: Advances in Computer Methods and Geomechanics: IACMAG Symposium 2019, Vol. 1, p. 367. Springer Nature (2020)
Onyelowe, K.C., Bui Van, D., Nguyen Van, M.: Swelling potential, shrinkage and durability of cemented and uncemented lateritic soils treated with CWC base geopolymer. Int. J. Geotechn. Eng., 1–16 (2018)
Singhi, B., Laskar, A.I., Ahmed, M.A.: Investigation on soil–geopolymer with slag, fly ash and their blending. Arabian J. Sci. Eng. 41(2), 393–400 (2016)
Zhang, M., Guo, H., El-Korchi, T., Zhang, G., Tao, M.: Experimental feasibility study of geopolymer as the next-generation soil stabilizer. Constr. Build. Mater. 47, 1468–1478 (2013)
Syed, M., GuhaRay, A., Agarwal, S., Kar, A.: Stabilization of expansive clays by combined effects of Geopolymerization and fiber reinforcement. J. Inst. Eng. (India): Series A, 101(1), 163–178 (2020)
Ghadir, P., Ranjbar, N.: Clayey soil stabilization using geopolymer and Portland cement. Constr. Build. Mater. 188, 361–371 (2018)
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Nagaraju, T.V., Mounika, K.N. (2022). Swelling Characteristics of Fly Ash Based Geopolymer Expansive Clay Blends. In: Satyanarayana Reddy, C.N.V., Saride, S., Krishna, A.M. (eds) Ground Improvement and Reinforced Soil Structures. Lecture Notes in Civil Engineering, vol 152. Springer, Singapore. https://doi.org/10.1007/978-981-16-1831-4_21
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DOI: https://doi.org/10.1007/978-981-16-1831-4_21
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