Monotonic and Cyclic Behavior of Salt-Encrusted Flat (Sabkha) Soil

Alnuaim, Ahmed; Alsanabani, Naif M.; Alshenawy, Abdulhafiz O.

doi:10.1007/s40999-020-00561-0

Cited by 11 publications

(5 citation statements)

References 25 publications

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“…The analysis performed herein is a quasi-static system; thus, the horizontal dimensions of of the wavelength (λ) (Kramer, 1996), which can be calculated based on the velocity (v) (compressive or shear) and frequency (f) using (𝜆 = 𝑣𝑓). The shear wave velocity for sabkha samples was measured using the bender element, and it was 85, 120, and 211 m/s for effective confining stress of 50, 100, and 150 kPa, respectively (Alnuaim et al, 2020). Operation frequencies of 5, 20, and 80 Hz were considered in the FEM analysis; therefore, the lower bound of the element size was approximately 0.3 m.…”

Section: Finite Element Methods (Fem) Modelingmentioning

confidence: 99%

“…After selecting an appropriate constitutive model that captures the behavior of the considered soil, it is important to carefully evaluate the parameter used in the constitutive model to ensure accuracy. In this study, the strength parameters were set as the strength of the natural sabkha soil (Alnuaim et al, 2020). The monotonic and cyclic behavior of the soil at effective stresses of 50, 100, and 150 kPa have been studied by Alnuaim et al (Alnuaim et al, 2020).…”

Section: Fem For Sabkha Soilmentioning

confidence: 99%

“…In this study, the strength parameters were set as the strength of the natural sabkha soil (Alnuaim et al, 2020). The monotonic and cyclic behavior of the soil at effective stresses of 50, 100, and 150 kPa have been studied by Alnuaim et al (Alnuaim et al, 2020). They evaluated stiffness parameters of 18700, 20200, and 20300 kPa, which were employed as input data in this study.…”

Section: Fem For Sabkha Soilmentioning

confidence: 99%

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Numerical Investigation of Liquefaction Potential in Sabkha Soil Supporting Foundation Subjected to Vibration Loading

Alsanabani

Alnuaim²

2022

JER is an international, peer-reviewed journal that publishes f

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Liquefaction is a major concern, especially in loose soil subjected to vibrations, which may lead to severe damage to buildings and infrastructure. In this paper, the influence of vertical vibrational loading on the liquefaction potential of natural sabkha soil was numerically examined to understand the effects of different parameters, on liquefaction potential. The parameters considered in this study include vertical displacement amplitude, frequency, modified mass ratio, subsoil conditions (natural and cement-stabilized sabkha soil with 5% and 10% cement content), and thickness ratio of cement-stabilized sabkha soil. Liquefaction was observed for different foundation configurations. The pore water pressure ratio beneath the foundation increased with a decrease in foundation mass. The minimum foundation mass that prevents liquefaction in the sabkha soil depends on the ratio of the machine’s velocity to the shear wave velocity of the subsoil (sabkha). The study provides guidance and information on the risk of constructing a foundation that is subjected to continuous vibration (such as the foundations of machines) in saturated sabkha soils due to the low rigidity, resulting from the generation of pore water pressure during the dynamic loading

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Section: Finite Element Methods (Fem) Modelingmentioning

confidence: 99%

Section: Fem For Sabkha Soilmentioning

confidence: 99%

Section: Fem For Sabkha Soilmentioning

confidence: 99%

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Numerical Investigation of Liquefaction Potential in Sabkha Soil Supporting Foundation Subjected to Vibration Loading

Alsanabani

Alnuaim²

2022

JER is an international, peer-reviewed journal that publishes f

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“…Sabkhas, also known as salt flats, represent polyextreme environments with high temperatures, salinities, and light intensities and are distributed globally in arid regions of the Middle East, North Africa, the USA, and Australia. Sabkhas pose a challenging environment for the survival of plants, animals, and various organisms due to their extreme conditions [1,2]. Despite the harsh environmental conditions, these salt flats host remarkably robust and diverse microbial communities that are highly adaptable and metabolically diverse and have excellent abiotic stress resilience [3][4][5].…”

Section: Objectivementioning

confidence: 99%

High-quality genome assembly and annotation of five bacteria isolated from the Abu Dhabi sabkha-shore region

Sarfraz,

Tuyisabe,

De Montfort

et al. 2024

BMC Genom Data

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Objectives Sabkhas represent polyextreme environments characterized by elevated salinity levels, intense ultraviolet (UV) radiation exposure, and extreme temperature fluctuations. In this study, we present the complete genomes of five bacterial isolates isolated from the sabkha-shore region and investigate their genomic organization and gene annotations. A better understanding of the bacterial genomic organization and genetic adaptations of these bacteria holds promise for engineering microbes with tailored functionalities for diverse industrial and agricultural applications, including bioremediation and promotion of plant growth under salinity stress conditions. Data description We present a comprehensive genome sequencing and annotation of five bacteria (kcgeb_sa, kcgeb_sc, kcgeb_sd, kcgeb_S4, and kcgeb_S11) obtained from the shores of the Abu Dhabi Sabkha region. Initial bacterial identification was conducted through 16 S rDNA amplification and sequencing. Employing a hybrid genome assembly technique combining Illumina short reads (NovaSeq 6000) and Oxford Nanopore long reads (MinION), we obtained complete annotated high-quality gap-free genome sequences. The genome sizes of the kcgeb_sa, kcgeb_sc, kcgeb_sd, kcgeb_S4, and kcgeb_S11 isolates were determined to be 2.4 Mb, 4.1 Mb, 2.9 Mb, 5.05 Mb, and 4.1 Mb, respectively. Our analysis conclusively assigned the bacterial isolates as Staphylococcus capitis (kcgeb_sa), Bacillus spizizenii (kcgeb_sc and kcgeb_S11), Pelagerythrobacter marensis (kcgeb_sd), and Priestia aryabhattai (kcgeb_S4).

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“…On the other hand, the relative importance among criteria was low for low-rise buildings that rested on dense sand (case 7). The safety criteria were the most important, except for more resistance to liquefaction (C5) where there is no liquefaction potential in dense soil [34,35]. Hence, the more resistance to liquefaction criterion is insignificant and ordered last.…”

Section: Ten Criteria Weights For the Six Casesmentioning

confidence: 99%

Integrated Methods for Selecting Construction Foundation Type Based on Using a Value Engineering Principle

et al. 2023

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The cost of constructing foundations, on average, ranges from 10% to 15% of a project’s total cost. Therefore, selecting the appropriate type of foundation may result in a significant reduction in project costs. In this study, a value engineering (VE) approach was applied to select the best foundation type from seven alternatives that covered shallow and deep foundations. Selection was dependent on ten important criteria, which were classified into safety, buildability, flexibility of architectural design, and environmental impact. Foundation construction experts used the stepwise weight assessment ratio analysis (SWARA) method to determine the weights of these ten properties for six identified cases based on structure type and soil type. In addition, the weighted aggregated sum product assessment (WASPAS) method was used to determine the quality weight for each foundation option. The results show that adaptable architectural design requirements were more critical in selecting the foundation than the safety criteria for a bridge project. Additionally, the criteria for environmental impacts in the case of high-rise buildings have a more significant impact on foundation choice than low-rise buildings. The outcomes of this study may improve the adaptability of architectural design and the environmental impact of future structures and building codes in the construction industry.

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Monotonic and Cyclic Behavior of Salt-Encrusted Flat (Sabkha) Soil

Cited by 11 publications

References 25 publications

Numerical Investigation of Liquefaction Potential in Sabkha Soil Supporting Foundation Subjected to Vibration Loading

Numerical Investigation of Liquefaction Potential in Sabkha Soil Supporting Foundation Subjected to Vibration Loading

High-quality genome assembly and annotation of five bacteria isolated from the Abu Dhabi sabkha-shore region

Integrated Methods for Selecting Construction Foundation Type Based on Using a Value Engineering Principle

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