Sulphate Attack in Lime-Treated Marine Clay
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Cites background from "Sulphate Attack in Lime-Treated Mar..."
...1) and its exposure to moisture variations from seasonal changes result in differential heaving, which in turn causes cracking of pavement structures built on the treated soils (Rajasekharan and Rao 2005; Pillai et al. 2007)....
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References
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"Sulphate Attack in Lime-Treated Mar..." refers methods in this paper
...Procedures suggested by Jackson (1958) were used for chemical analysis of samples such as organic content, pH, exchangeable ions, and base exchange capacity....
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365 citations
"Sulphate Attack in Lime-Treated Mar..." refers background in this paper
...Recent studies of lime treated clays have reported swelling and pavement failures are caused by the formation of expansive type minerals such as ettringite (Ca6 Al2(OH)12(SO4)3 26H2O) and thaumasite (Ca3 (H2O)12(CO3) (SO4)[Si(OH)6)] (Mitchell 1986; Hunter 1988; Rajasekaran 1994)....
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...Hunter (1988) reported the formation of ettringite and thaumasite in sulphate enriched soils....
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...Several researchers (Mehta and Klien 1966; Hunter 1988; Mitchell and Dermatas 1992) have brought out the influence of temperature on ettringite formation....
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...Provide sufficient lateral drainage to remove any oxidation products or keep high pH environment Hunter (1988) Avoid ponding of soils and provide good surface drainage, use utility trenches with impermeable synthetic liners along the slopes and construction joints Raja (1990) Add barium chloride…...
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...The fluctuation of lime content values in the above system during the first 30 days may be due to the consumption of Ca2þ ions in ettringite formation (Mitchell 1986; Hunter 1988)....
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297 citations
"Sulphate Attack in Lime-Treated Mar..." refers background in this paper
...The fluctuation of lime content values in the above system during the first 30 days may be due to the consumption of Ca2þ ions in ettringite formation (Mitchell 1986; Hunter 1988)....
[...]
...Recent studies of lime treated clays have reported swelling and pavement failures are caused by the formation of expansive type minerals such as ettringite (Ca6 Al2(OH)12(SO4)3 26H2O) and thaumasite (Ca3 (H2O)12(CO3) (SO4)[Si(OH)6)] (Mitchell 1986; Hunter 1988; Rajasekaran 1994)....
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...Ettringite induced swelling in sulphate-enriched soils has been explained in detail by several researchers (Mitchell 1986; Hunter 1988; Rollings et al. 1999), but the increase in swelling pressure has been noted only under certain conditions (Stuble 1986)....
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...This may be due to ettringite formation which is accompanied by an increase in the liquid limit values (see Mitchell 1986) after 15 days....
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283 citations