Enhancing the Soft Clay Bearing Capacity by Using Cement Dust – Lime Columns

Belal, Adel M.; El-Mashad,; El-Soud, Sameh Abu; Abdelmonem, Mohammed

doi:10.1007/978-3-030-01917-4_4

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…Comparing the results from the simplified method and a numerical study shows reasonable agreement, especially when the steady-stress concentration ratio is within a typical range (2)(3)(4)(5)(6). The discrepancies in results for these two methods are discussed, mainly resulting from different assumptions adopted in one or 3D deformation.…”

Section: Review Of Jie Han Equation and Chartsmentioning

confidence: 80%

“…it was concluded that Stress concentration (the ratio between the stress transfer to the column to the stress transfer to the clay) value increased with the increase of the shear strength of the clay, The stress concentration value for the fully penetrating column is higher than the floating column because the second one depends on the skin friction only, The sand additives to the crushed stone recorded a marginal effect on the stress concentration value in the clay with a shear strength of 6 kPa, but the effect was weak with the clay with a shear strength of 12 kPa. (Belal et al, 2019) studies the effect of using floating and end-bearing columns from cement dust and lime on the clay-bearing capacity. The experimental model was implemented and defensed by FEM.…”

Section: Introductionmentioning

confidence: 99%

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Consolidation of Soft Clay Using Slag- Cement Dust Columns

Saleh

El-Mashad

Dawood

et al. 2022

Engineering Research Journal - Faculty of Engineering (Shoubra)

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Soft clay is a problematic soil due to its low bearing capacity and high settlement. To treat such soil, many techniques were developed, such as a replacement method with sand bed, stone columns, sand columns, vertical sand drains…. etc. The main objective of this study is to investigate the effect of the introduction of slag-cement dust columns to soft clay on the consolidation parameters such as coefficient of consolidation, compression index, and compressibility index. Three consolidation tests were carried out on three soft clay samples. The first sample was soft clay without treatment. The second sample was soft clay treated with one slag-cement dust column, and the third sample was treated with three slag-cement dust columns. All Samples were tested in a Modified Consolidation Apparatus. A relationship between void ratio and stress was deduced.The tests showed that the columns increased the clay consolidation rate and decreased the compression index, where the columns absorbed the clay water content. The consolidation coefficient values for the treated clay soil proved that Han's model applies to clay treated with slag-cement dust columns (SCCs).

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Section: Review Of Jie Han Equation and Chartsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Consolidation of Soft Clay Using Slag- Cement Dust Columns

Saleh

El-Mashad

Dawood

et al. 2022

Engineering Research Journal - Faculty of Engineering (Shoubra)

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“…A wide range of various improvement techniques is implemented to improve the clay-bearing capacity and reduce excess settlement such as stone columns [1], grouting with lime, lime silica [2], and [3]. Some techniques depend on using lime, fly ash, and cement, as presented by [4], [5], [6], [7]. Further improvement to the soft ground by introducing the soil-cement column method as reported by [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of installing columns from different solid waste materials on the soft clay bearing capacity

et al. 2023

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Soft clay deposits cause many problems due to low bearing capacity and high deformation. This paper presents the results of laboratory model tests for studying the improvement of soft clay-bearing capacity using two kinds of soil columns, the first is slag-cement dust columns and the second is bentonite column. Three columns from SCC (slag-cement dust columns) encased by Woven Geotextile are installed beneath a steel plate representing a footing. Four bentonite Columns (BC) encased with non-woven geotextile are installed around the steel plate at a distance of 1 B, where B is steel plate width. The research aims to assess the increase in the SCC length effect on clay-bearing capacity. A series of 4 experimental tests were performed. The results show that, the clay bearing capacity increased with the increase of column length because slag and bentonite can absorb the clay water content, leading to an increase clay shear strength. Floating columns gives better improvement than the end bearing columns. The slag partially replaced with cement dust is weak enough to transfer the total applied stress to a strong soil layer.

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Enhancing the Soft Clay Bearing Capacity by Using Cement Dust – Lime Columns

Cited by 2 publications

References 2 publications

Consolidation of Soft Clay Using Slag- Cement Dust Columns

Consolidation of Soft Clay Using Slag- Cement Dust Columns

Effect of installing columns from different solid waste materials on the soft clay bearing capacity

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