Abstract
Dispersive clay has the very low erosion resistance capacity and it causes serious threatening to the engineering safety such as the hydraulic engineering. It is one of the problematic soils which have been concerned in the geotechnical engineering field. The pinhole, crumb, compression, SEM test had been investigated in different fly ash contents and curing time, so as to study the effect of fly ash on the dispersivity, deformation and microstructure characteristics. The test results showed that the fly ash had a significant influence on the dispersivity of dispersive clay. The dispersivity was reduced with the increasing of fly ash contents and curing time. The SEM tests showed that the quantity of hydration products changed significantly with the increasing of fly ash contents and curing time, leading to an increase in contact area between framework grains, a reduction in intergranular pore and a transformation from point-contact to surface-contact.
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References
Fan, H.H., Kong, L.W.: Empirical equation for evaluating the dispersivity of cohesive soil. Can. Geotech. J. 50(9), 989–994 (2013)
Ma, X.Y., Xu, Y.J.: Behavior of dispersive clay and its lime stabilized test in Guanlu reservoir in Qingdao. Chin. J. Geotech. Eng. 22(4), 441–444 (2000)
Mir, B.A.: Some studies on the effect of fly ash and lime on physical and mechanical properties of expansive clay. Int. J. Civil Eng. 13(3), 203–212 (2015)
Wang, M., Bai, X.H., Liang, R.W., et al.: Micro study on soft foundations reinforcement with lime-fly ash piles. Rock Soil Mech. 22(1), 67–70 (2001)
Engr, J.G., Galupino, J.D.: Permeability characteristics of soil-fly ash mix. ARPN J. Eng. Appl. Sci. 10(15), 6440–6447 (2015)
Horpibulsuk, S., Phetchuay, C., Chinkulkijniwat, A.: Soil stabilization by calcium carbide residue and fly ash. J. Mater. Civil Eng. 24(2), 184–193 (2012)
Acknowledgements
This study was partly funded by the National Natural Science Foundation of China No. 51579215 and No. 51379177.
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Fan, H., Yan, Y., Yang, X., Zhang, L., Hu, H. (2018). Engineering Properties and Microstructure Feature of Dispersive Clay Modified by Fly Ash. In: Wu, W., Yu, HS. (eds) Proceedings of China-Europe Conference on Geotechnical Engineering. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-97112-4_178
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DOI: https://doi.org/10.1007/978-3-319-97112-4_178
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