Lime column (LC) is an effective method for ground improvement which causes reduction in settlement and enhancement in bearing capacity of soft soils, subsequently resulting in economical foundations. This study investigates the effects of LC on soft soil with the help of laboratory tests.
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Slurry is a mixture of a solid and a liquid. The density of a slurry can be calculated as. ρ m = 100 / (c w / ρ s + (100 - c w) / ρ l) (1). where . ρ m = density of slurry (lb/ft 3, kg/m 3). c w = concentration of solids by weight in the slurry (%). ρ s = density of the solids (lb/ft 3, kg/m 3). ρ l = density of liquid without solids (lb/ft 3, kg/m 3)
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Slurry B is usually composed of gypsum, water and quick lime . Slurry A is usually CSA cement and water [ 4 ]. The hydration of the main minerals in CSA clinker is as in Equations (3) and (4), and the ettringite (3CaO∙Al 2 O 3 ∙3CaSO 4 ∙32H 2 O) and aluminum gel (Al 2 O 3 ∙3H 2 O) as in Equation (3) are formed when there is enough ...
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Effect of Gypsum on Strength Behavior of Lime-Modified Pond Ash as an Underground Stowing Material. Kalyan Kumar G G. ... In various locations worldwide, fly ash slurry has been injected into underground bord and pillar coal mine workings to provide support, and the method was recently used successfully for the Ipswich Motorway upgrade in ...
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The above test results indicate that there is good improvement in the engineering behaviour of the soil around the lime columns and lime slurry injection points. There is a significant increase in the preconsolidation pressure ( P c ) value from 36 kN/m 2 to 82 kN/m 2, with a corresponding decrease in the compression index ( C c ) value from 0 ...
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Results: One-way ANOVA and LSD tests showed significant differences in the effect of slurry water on the setting time, compressive strength and dimensional stability of type III gypsum (p<0.05).
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The aim of this study is to investigate the effect of lime, gypsum and lime with gypsum mixtures on the swell per-cent, swell pressure and unconfined compression strength of highly plastic clays in the Batikent region to specify an appropriate mixture ratio for soil stabilization. The opti-mum water content and maximum dry unit weight of clay
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Abstract. Rapid increases in the production of gypsum waste from the Flue Gas Desulphurization process necessitates that proper impoundments be built with an adequate understanding of the strength behavior of the sedimented gypsum slurry. This article presents laboratory experimental results that describe its physical characteristics and strength behavior. …
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Slurry guidelines can be followed when there is critical carrying velocities with pressure gradients of solid mixtures. The slurry acts as a Newtonian liquid - when the pressure loss is the same as the water friction - when the slurry contains particles under 150 microns and the concentration of the particles is low with the fluid velocity high
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This paper presents the effect of gypsum and lime contents on the mechanical properties of soil. The compressive strength was estimated under different curing periods. PH, …
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Gypsum soils, known for their high solubility and weak structural integrity, pose significant challenges in construction and agricultural applications. These soils tend to exhibit excessive …
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Based on these curves, an analytical solution for lime-treated slurry settlement under vacuum preloading was derived and validated through laboratory tests. The solution can be used to predict lime-treated slurry settlement under vacuum pressure effectively. ... The additive character of soft clay plays an important role in the clogging effect ...
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Whereas for slurry with high clay content, the recommended lime dosage was established to be 2% to reduce its compressibility or enhance its permeability; for slurry with high silt content, the ...
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Gypsum, or gypsum-like phases, were observed by SEM-EDS analysis of treated soils as discrete particles or in complex aggregates with secondary Fe- and Mn-oxides. ... was likely responsible for the formation of secondary Fe- and Ca-minerals in soils and that the magnitude of this effect is controlled by lime slurry infiltration, soil porosity ...
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The settlement of expansive soils could be the main reason for considerable damage to roads, highways, structures, irrigation channel covers, and the protective shell of tunnels that use bentonite ...
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This study is to determine the effect of temperature on cement slurry using fluid loss control additive. The filtration properties of the cement slurry were analysed at 820F to 176 °F temperature range with 10g to 30g of various fluid loss control additive (FLCA) concentration. Results shows that cement slurry responded
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lime slurry, here is what you need to know. CALSAFE ready-to-use lime slurry is made by mixing quicklime or hydrated lime with water. It therefore eliminates the challenges posed by handling dry lime products and mixing your own lime slurry at your location. For more on the differences between CALSAFE lime slurry, quicklime and
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Additionally, the effect of EDTMPS on the hydration of tricalcium aluminate (C3A) and gypsum (GP)/bassanite (BS) slurry was investigated through X-ray diffraction (XRD) and ion concentration test.
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This study investigates the effects of glutinous rice slurry on the unconfined compressive strength (UCS), failure mode, and microstructure of lime-treated seasonally frozen soil subjected to ...
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The gypsum dewatering feed pumps feed slurry to the gypsum dewatering hydrocyclone clusters and vacuum belt filter trains. The gypsum dewatering hydrocyclones separate and distribute the gypsum slurry suspended solids. The gypsum dewatering hydrocyclones have multiple sets of individual cyclones and a valve network, which
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Boman [13] in which lime is mixed thoroughly with clay by a deep mixing auger. This method was also used for soft ground stabilization in China, Japan, Singapore and many other countries of the world with little or no varia-tion. Lime pressurized slurry injection is the second tech-nique in which lime slurry is injected under pressure in the
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the effects of freezing and thawing, using glutinous rice slurry and lime as admixtures. However, there are very limited studies on the failure mechanisms and mechanical properties of glutinous rice slurry-improved soil under freezing and thawing effects. This study investigates the strength properties and freeze–thaw resistance of lime-treated
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The results also showed that the chemical composition of water affects the yield stress of CPB slurry and that MC mitigates the negative effect of mine-processed water (MW) and thus lead to ...
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This study is an overview of previous studies on lime (quick and hydrated) -treated soil. Lime is the oldest traditional stabilizer used for soil stabilization.
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Table 2 summarizes how lime and glutinous rice slurry stabilization affected the behaviour of some soils, as reported in the literature. Typically, the lime content used to improve soils is between 9%
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The gold processing industry is a large consumer of lime reagents in various forms. Its role in gold processing is mainly as a pH control agent for optimal cyanidation leaching of gold, as well as ...
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The presence of sulfate (gypsum) increases the compressive strength and the expansion of lime-stabilised soil as the gypsum content increases, with a more pronounced …
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The present work aim is to study the effect of elevated temperate exposure on properties of cellulose fiber reinforced gypsum (FCG), namely (density, compressive strength, flexural strength and ...
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The role of gypsum level on the long-term strength and expansion of soil stabilised with different lime contents is not well understood. This research, therefore, studied the effect of varying gypsum concentrations of 0, 3, 6, and 9 wt% (equivalent to the sulfate contents of 0, 1.4, 2.8, and 4.2%, respectively) on the performance of sulfate soil stabilised with two lime levels (4 …
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Fig. 6 shows the effects of different water reducers and their respective dosages on the slurry properties of MPGCM samples. From Fig. 6 a, it is evident that both SM and FDN have good water reducing effects on the slurry of the MPG mixture. As the dosage of the water reducing agent increased, the standard consistency water consumption of the ...
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