Treatment of collapse of gypseous soils by grouting

Fattah, Mohammed Y.; Al-Ani, Mohammad M.; Al-Lamy, Mahmoud T.A.

doi:10.1680/grim.11.00020

Cited by 24 publications

(14 citation statements)

References 5 publications

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“…Fattah et al affirm by their study that the treatment of undisturbed collapsible gypsum samples with acrylate liquid, with different properties and with various gypsum contents, can reduce the collapse potential by more than 50-60% [6][7][8].…”

Section: Ricon19 -Remine International Conferencementioning

confidence: 99%

Study of the Effect of Waste Glass Fibers Incorporation on the Collapsible Soil Stability Behavior

Bakir

Abbèche

Panczer

et al. 2020

KEG

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Soil collapse remains a major issue affecting structural foundations, particularly in arid and semi-arid zones where humidification is a key factor contributing to the collapse. Much research has been devoted to identifying treatment methods which enhance the stability and load-bearing capacity of this type of soil. This paper investigates the potential advantages of the addition of milled glass fibers (Fg ). Soil samples were prepared at different compaction energies and various water contents, then treated with different percentages of milled glass fiber, before being submitted to the simple consolidation odometer test. The results obtained in this study showed that soil samples treated with an optimal dosage of 6% of milled glass fibers compacted at 60 blows and humidified at 6% of moisture content. This represents an improvement in the stability of the soil, reducing the collapse potential (Cp) from 11.95% to 1.62%. This treatment method produces soil which can be classified as a moderate risk foundation soil according to the Jennings and Knight evaluation metrics (1975). Keywords: collapsible soils, arid zones, fiberglass, odometer test.

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Section: Ricon19 -Remine International Conferencementioning

confidence: 99%

Study of the Effect of Waste Glass Fibers Incorporation on the Collapsible Soil Stability Behavior

Bakir

Abbèche

Panczer

et al. 2020

KEG

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“…Further, many improvements techniques have been employed to treat gypseous soils such as using some additives (Fattah et al 2013),increasing compaction ( (Razouki et al 2012). However, using granular columns was restricted to the few previous examples mentioned in section two.…”

Section: Soil Conditions In Iraqmentioning

confidence: 99%

Treatment of Iraqi collapsible soil using encased stone columns

Al-Obaidy

Jefferson²,

Ghataora³

2016

JGS Special Publication

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“…Gypseous soil is strong when it is dry but loses its strength when exposed to water causing collapse and distortions. Many attempts (field and laboratory investigations) have been made to understand the behavior and the characteristics of these soils due to problems detected when construction on them (Al-Nouri and Saleam, 1994;Mansour et al, 2008;Fattah et al, 2012Fattah et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

Time-dependent collapse potential of unsaturated collapsible gypseous soils

Fattah

Dawood

2020

WJE

Self Cite

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Purpose This study aims to predict the volume changes and collapse potential (CP) associated with the changes in soil suction by using the pressure cell and the effect of initial load on soil suction. Three types of gypseous soils have been experimented in this study, sandy gypseous soil from different parts of Iraq. A series of collapse tests were carried out using the oedometer device [single oedometer test (SOT) and double oedometer test (DOT)]. In addition, large-scale model with soil dimensions 700 × 700 × 600 mm was used to show the effect of water content changes in different relations (collapse with time, stress with time, suction with time, etc.). Design/methodology/approach A series of collapse tests were carried out using the oedometer device (SOT and DOT). In addition, a large-scale model with soil dimensions 700 × 700 × 600 mm was used to show the effect of water content changes in different relations (collapse with time, stress with time, suction with time, etc.). Findings The CP increases with the increasing of the void ratio for each soil. For each soil, the CP decreased when the initial degree of saturation increased. Kerbala soil with gypsum content (30%) revealed collapse value higher than Tikrit soil with gypsum content (55%) under the same initial conditions of water content and density, this is because the higher the Cu value of Kerbala soil is, the more well-graded the soil will be. Upon wetting, the smaller particles or fractions of the well-graded soil tend to fill in the existing voids, resulting in a lower void ratio as compared to the poorly graded one. Consequently, soils with high Cu value tend to collapse more than poorly graded ones. The compressibility of the soil is low when loaded under unsaturated condition, the CP for samples tested in the DOTs under stress level 800 kPa are greater than those obtained from collapse test at a stress level of 200 kPa. Originality/value The initial value of suction for all soils increases with initial water content decreases.

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Treatment of collapse of gypseous soils by grouting

Cited by 24 publications

References 5 publications

Study of the Effect of Waste Glass Fibers Incorporation on the Collapsible Soil Stability Behavior

Study of the Effect of Waste Glass Fibers Incorporation on the Collapsible Soil Stability Behavior

Treatment of Iraqi collapsible soil using encased stone columns

Time-dependent collapse potential of unsaturated collapsible gypseous soils

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