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- W2139176326 abstract "ABSTRACT: Chemical stabilisation is a popular technique to improve the erosion resistance of the soils. In this study, two chemical stabilisers, namely lignosulfonate and general purpose Portland cement were tested on two different soils, a silty sand and a dispersive clay. A series of erosion tests were performed to study the effectiveness of the stabilisation in increasing the erosion resistance. Results showed that the increase in the critical shear stress of the silty sand with only 0.6% lignosulfonate treatment was equivalent to that with around 2.5% cement treatment. However, the stabilisation of the dispersive clay with 0.6% cement was more effective than 0.6% lignosulfonate. The findings of this research also indicated that the coefficient of soil erosion decreased as a power function of the critical shear stress. INTRODUCTION Erosion through internal cracks leading to piping and surface erosion are the most common erosion modes, which cause failures of earthdams and embankments. Hence, it is very important to improve the erosion resistance of soils using appropriate and cost effective techniques. Use of chemical admixtures is one way of increasing the erosion resistance of soil in earth structures. In the past, various stabilisers such as lime, cement, fly ash and milled slag were used as stabilising agents. The erosion of dispersive soils was controlled by adding lime and gypsum especially at the foundation-embankment interface and on the slope of the embankment (Biggs and Mahony 2004; Cole" @default.
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- W2139176326 date "2008-03-07" @default.
- W2139176326 modified "2023-10-16" @default.
- W2139176326 title "Investigating Erosional Behaviour of Chemically Stabilised Erodible Soils" @default.
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- W2139176326 doi "https://doi.org/10.1061/40971(310)83" @default.
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