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- W2747762816 abstract "In the field of soil stabilization, only calcium silicate hydrate（CSH） and ettringite（AFt） as hydration products have been reported to directly contribute to the strength enhancement of the soil. A chloride dredger fill, an artificial chloride saline soil, and a non-saline soil were stabilized by Portland cement（PC） and PC with Ca（OH）2（CH） with different contents. A series of unconfined compressive strength（UCS） tests of stabilized soil specimen after curing for 7 d and 28 d were carried out, and the hydration products and microstructure of the specimens were observed by X-ray diffractometry（XRD）, scanning electronic microscopy（SEM）, and energy-dispersive X-ray analysis（EDXA）. The results showed that the strengths of PC+CH-stabilized chloride saline soils were much higher than those of PC-stabilized soils. A new hydration product of calcium aluminate chloride hydrate, also known as Friedel’s salt, appeared in the PC+CH-stabilized chloride saline soils. The solid-phase volume of Friedel’s salt expanded during the formation of the hydrate; this volume filled the pores in the stabilized soil. This pore-filling effect was the most important contribution to the significantly enhanced strength of the PC+CH-stabilized chloride saline soils. On the basis of this understanding, a new optimized stabilizer was designed according to the concept that the chloride in saline soil could be utilized as a component of the stabilizer. The strength of the chloride saline soils stabilized by the optimized stabilizer was even further increased compared with that of the PC+CH-stabilized soils." @default.
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- W2747762816 date "2017-01-01" @default.
- W2747762816 modified "2023-09-24" @default.
- W2747762816 title "Effect of Friedel’s salt on strength enhancement of stabilized chloride saline soil" @default.
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