GIS and geotechnical mapping of expansive soil in Toshka region

Labib, M. M.; Nashed, Amani

doi:10.1016/j.asej.2012.11.005

Cited by 34 publications

(15 citation statements)

References 13 publications

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“…When water interacts with the clay minerals, Nelson et al [47] argues that an intermolecular bonding develops due to the dipolar nature of water which causes ion hydration and adsorption of water on surfaces of clay particles by virtue of four simultaneous mechanisms including hydrogen bonding, cation hydration, osmosis, and dipole attraction. However, according to Labib and Nashed [51] and Akgün et al [39], the stress equilibrium inside the clay-water mix is disturbed due to presence of H + and OH − in water because the clay particles carry negative edge charge and positive surface charge, which is responsible for the "expansive" movement. e magnitude of this movement is sometimes several degrees higher, and the theory of consolidation, moisture content, and suction-based techniques are used to predict the resulting movement [23].…”

Section: Basic Clay Mineralsmentioning

confidence: 99%

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Jalal

Jamhiri

et al. 2020

Advances in Materials Science and Engineering

100

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Calcium-based stabilizer materials (CSMs) exhibit pozzolanic properties which improve the properties of clayey soils by hydration, cation exchange, flocculation, pozzolanic reaction, and carbonation. In this comprehensive review, comprising over past three decades from 1990 to 2019, a mechanistic literature of expansive soil stabilization by incorporating CSMs is presented by reviewing 183 published research articles. The advantages and disadvantages of CSMs as the ground stabilizing agent are succinctly presented, and the major outcomes of physicochemical effects on soil properties are discussed in detail. After blending with CSM, the main and interaction effects on soil properties with focus on chemical processes such as X-ray fluorescence, X-ray diffraction analyses, and microstructure interaction by using scanning electron microscopy and thermogravimetric analysis have been reviewed in light of findings of past researchers. This work will help geotechnical engineers to opt for suitable CSM in the field of geoenvironmental engineering in committing to sustainable construction of civil engineering structures over expansive soils.

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Section: Basic Clay Mineralsmentioning

confidence: 99%

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Jalal

Jamhiri

et al. 2020

Advances in Materials Science and Engineering

100

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“…The 95% confidence interval ranges of the roundness classes of fine and . Geological map of the Toshka area showing the exposed rock units and the main structural elements in the study area (modified after Labib and Nashed, 2013). medium sand size fractions of the Toshka area are shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Mineralogy and grain morphology of the aeolian dune sand of Toshka area, southeastern Western Desert, Egypt

Refaat

Hamdan

2015

Aeolian Research

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“…is process involved four different mechanisms at a time, namely, osmosis, dipole attraction, cation hydration, and hydrogen bonding. Nevertheless, the stress equilibrium is disturbed inside the clay-water mixture because of the H + and OH − ions present in water and negative charge on the edges, which is responsible for the expansive movement [29,30]. is movement is often several times higher, and many techniques are used to estimate the resulting expansion.…”

Section: Literature Surveymentioning

confidence: 99%

An Experimental Study on the Geotechnical, Mineralogical, and Swelling Behavior of KPK Expansive Soils

Zamin

Nasir²,

Mehmood

et al. 2021

Advances in Civil Engineering

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Expansive soils are found in numerous regions of the world explicitly in arid and semiarid zones. These soils expand when absorbed moisture and shrink when released water. Such soil is viewed as a characteristic risk for infrastructures due to the shrink and swell behavior. These soils become more problematic when lightly or moderately loaded structures are built on them. The swelling and shrinkage in these soils chiefly happen due to the presence of montmorillonite minerals. The mineralogical and swell behavior of foundation soils is playing a vital role in the overall stability of a structure. These parameters are often ignored in the geotechnical report writing stage specifically in small projects, due to which, the durability and service life of the facilities are reduced and the maintenance cost is increased. To mitigate the potential damages in structures constructed on expansive soil, it is necessary to assess the mineralogical and swelling characteristics of expansive soil. The current study aims to determine the geotechnical, mineralogical, and swell behavior of the local expansive soils. Based on the results, the Karak soil has the highest plasticity index (PI) of 37% with a clay fraction of 28%, while the D.I. Khan soil has the least PI of 23% with a clay fraction of 17%. Similarly, Karak’s soil contained a higher percentage of montmorillonite (Rp = 8.9%). The maximum values of swell pressure, swell potential, and 1D deformation are 280 kPa, 12.5%, and 1.92 mm for the Karak soil, 6.45% 150 kPa, and 1.38 mm for D.I. Khan soil, and 10.5%, 245 kPa, and 1.64 mm for Kohat soil, respectively. This concludes that Karak’s soil has high plasticity and swell characteristics than Kohat and D.I. Khan soil. The swell characteristic of expansive soils increases with the increase in the percentage of the fine specifically the clay fraction. Furthermore, the Karak soil is more critical than Kohat and D.I. khan soil for lightly loaded structures.

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GIS and geotechnical mapping of expansive soil in Toshka region

Cited by 34 publications

References 13 publications

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Mineralogy and grain morphology of the aeolian dune sand of Toshka area, southeastern Western Desert, Egypt

An Experimental Study on the Geotechnical, Mineralogical, and Swelling Behavior of KPK Expansive Soils

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