Effects of polyurethane foam on the behaviour of collapsible soils

Abdulrasool, Ahmed S.; Al-Wakel, Saad Faik Abbas

doi:10.1680/jgere.21.00005a

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…Abdulrasool and Al-Wakel [1] studied the behavior of gypseous soil treated with polyurethane foam (PF). Next, using a CBR test, the effects of PF on the strength of this soil under the effect of static loading were assessed.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling for stability of homogeneous clay and sand slopes improved by polyurethane foam piles in slope face

Hassona,

Hakeem

2024

J. Umm Al-Qura Univ. Eng.Archit.

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Polyurethane foam (P.U.) injection resin techniques have been widely used for slab crack repair, soil improvement, and structural crack repair over the past 20 years. In this study, numerical investigations were carried out to enhance the strength of both sand and clay soils via utilizing polyurethane foam as inclusion material. The investigation was conducted using ‘GeoStudio (SLOPE/W) 2D’ software to model 6 m high homogeneous slopes made of soft clay and medium sand with varying slope angles (25°, 30°, 35°) on same soil extended up to 9 m depth and with inclusion of polyurethane foam piles of varying diameter (0.5 m, 0.8 m), length (up to 10 m) and spacing (0.5 m, 1 m, 2 m) in the slope face. The numerical model was verified using experimental test results conducted by Hassona and Abdelnaeem (Physical and mechanical properties of polyurethane foam conditioned sand. MSc, Civil Engineering Department, Faculty of Engineering Minia University). The results revealed that, for slope angle, Ø = 30°, the factor of safety for clay soil increased when using polyurethane piles (diameter, 0.5 m and 10 m length) having spacing of two m, one m, half m, and when used as sheet piles, respectively. The factor of safety for clay soil increased significantly when using polyurethane piles (diameter, 0.8 m, and 10 m length) having spacing the same as before and as sheet piles having width of 0.5 and 0.8 m, respectively. Also, for medium dense sand soil, using polyurethane piles (diameter, 0.5 m and 10 m length) having spacing the same as before, and as sheet piles increased factor of safety much more than that for clay soil. In addition, for medium dense sand soil similar observation were noticed using polyurethane piles (diameter 0.8 m, and 10 m length) having spacing the same as before, and as sheet piles, respectively. In addition, the effects of slope angles also studied.

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Section: Introductionmentioning

confidence: 99%

Numerical modelling for stability of homogeneous clay and sand slopes improved by polyurethane foam piles in slope face

Hassona,

Hakeem

2024

J. Umm Al-Qura Univ. Eng.Archit.

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“…The behavior of gypsum soil is an interesting study due to the dissolution of gypsum particles when exposed to moisture. Therefore, understanding the behavior and morphology of soil is both fascinating and difficult [1]. Gypsum soils are usually found in semi-arid regions and arid areas in some countries.…”

Section: Introductionmentioning

confidence: 99%

Effect of Acidic on the Physicochemical Properties and Collapse Potential of Gypseous Soils: Experimental Investigations

Rahil

2023

GEOMATE

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The gypseous soils present a challenge when utilizing them as a foundation for structures, making them a problematic soil type. However, when gypseous soils are saturated by anticipated sources such as acidic results from sewerage of industry, the minerals are soluble, resulting in the subsidence of the structures. The study aims to provide valuable insights into the behavior of gypseous soils, which are known for their tendency to collapse and settle. It considered the impact of acidity on the potential for the collapse of gypseous soils, a crucial area of research that can benefit multiple fields. To comprehend the mechanisms governing the behavior of acidic gypseous soils, an investigation in the lab is carried out to determine how the presence of acidity in varying concentrations affects the possibility of the collapse of gypsum soils. To examine the impact of acidity on the chemical composition of gypseous soils, a Scanning Electron Microscope (SEM) analysis was conducted. The results of the analysis were used to create a map of this effect. In addition, the effect of different parameters such as unit weight and initial water content of gypseous soils and their effect on the collapse potential is studied. The results indicate that gypsum dissolves due to a change in the chemical composition of the soil, resulting in an increase in the collapse potential of gypseous soils. Consequently, the concepts of gypsum soil treatment must take into consideration the nature of the facilities constructed on this type of soil, such as industrial structures.

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Experimental investigation of the behavior of collapsible soil stabilized with calcium carbide residue

Hosseini,

Noorzad,

Alijani Shirvani

2024

Innov. Infrastruct. Solut.

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Effects of polyurethane foam on the behaviour of collapsible soils

Cited by 7 publications

References 19 publications

Numerical modelling for stability of homogeneous clay and sand slopes improved by polyurethane foam piles in slope face

Numerical modelling for stability of homogeneous clay and sand slopes improved by polyurethane foam piles in slope face

Effect of Acidic on the Physicochemical Properties and Collapse Potential of Gypseous Soils: Experimental Investigations

Experimental investigation of the behavior of collapsible soil stabilized with calcium carbide residue

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