Mineralogical Compositions of Some Indian Expansive Soils and Their Influence on Swelling Properties

Tahasildar, Janardhan; Rao, B. Hanumantha; Shukla, Sanjay Kumar

doi:10.1007/s40891-016-0081-3

Cited by 17 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 a. The observation made from figure is in well agreement with the results of Pedarla et al 74 and Tahasildar et al 11 , who have reported an increment of swelling properties with MMC. As such, surface profile nearly vertical for S p , but leaned towards total CEC for S a .…”

Section: Resultssupporting

confidence: 91%

“…Expansive clays undergo volumetric deformations (viz., swelling and shrinkage) which in turn induce differential settlements leading to failure of a structure built in/on them or when they are used as geomaterials for construction purposes 1 – 7 . Numerous studies focused on understanding and evaluating the swelling behaviour by establishing interrelations with properties of physical, chemical and mineralogical 8 – 11 . However, most of the relationships so far developed are only 2-dimensional as they considered alone of physical or chemical or mineralogical features.…”

Section: Introductionmentioning

confidence: 99%

“…In similar lines, Chittoori et al 29 studied the effect of clay mineral montmorillonite on the performance of chemically stabilized soils, and Mehta and Sachan 30 investigated the influence of mineralogy on mechanical behaviour of expansive soils. More deeply, Tahasildar et al 11 studied the influence of montmorillonite on swelling behaviour with limited set of data. Recently, Reddy et al 31 quantified the montmorillonite content and established relationships with swelling behaviour determined by free swell index test.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Combined effect of mineralogical and chemical parameters on swelling behaviour of expansive soils

Rao

Reddy²,

Mohanty³

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Microlevel properties such as mineralogical and chemical compositions greatly control the macro behaviour of expansive soils. In this paper, the combined effect of mineral (i.e. montmorillonite, MMC) and chemical contents (i.e. Ca and Na in their total (T), leachable (L) and exchangeable form (CEC)) on swelling behaviour is investigated in a comprehensive way. Several 3-dimensional (3D) graphs correlating MMC and Ca/Na ratio, together, with swelling property (swelling potential, Sa, and swelling pressure, Sp) are developed. 3D plots, in general, portrayed a non-linear relationship of Sa and Sp with MMC and Ca/Na ratio, together. It is hypothesized that swelling initially is triggered by chemical parameters due to their quick and rapid ionization capability, but the overall swelling phenomenon is largely controlled by MMC. It is importantly found that expansive soils are dominant with divalent Ca++ ions up to MMC of 67% and beyond this percentage, monovalent Na+ ions are prevalent. From the interpretation of results, the maximum Sa of 18% and Sp of 93 kPa is measured at MMC of 43%, (Ca/Na)T of 10–14 and (Ca/Na)L of 2–7. It is concluded from study that total CEC + MMC for determining Sa and (Ca/Na)T + MMC for determining Sp are superior parameters to be considered. The findings of the study also excellently endorsed the results of Foster32, who stated that ionization of Na or Ca depends on the constituent mineral contents. The findings presented herein are unique, interesting and bear very practical significance, as no earlier research work reported such findings by accounting for chemical and mineralogical parameters impact, in tandem, on swelling properties.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Combined effect of mineralogical and chemical parameters on swelling behaviour of expansive soils

Rao

Reddy²,

Mohanty³

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The mineralogy of the soil has a significant effect on the geotechnical properties of expansive soils, which vary significantly in composition and content from soil to soil and is highly variable from one soil to another [29]. It was calculated cation exchange capacity (EC), specific surface area (SSA), and total potassium content (TP) were higher in the experimental soil sample Eq.…”

Section: Mineralogical Propertiesmentioning

confidence: 99%

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

Ineza¹,

Jie²

2022

JCCEE

View full text Add to dashboard Cite

Background: Geotechnical engineers working on the ground face a common obstacle of unsuitable soil. Expansive soil is one of the soils vulnerable to high loads and unstable. Properties such as high permeability, low bearing capacity, compression, swelling and shrinkage behavior, low strength and stiffness are all characteristics of an expanding soil. Expansive soil is weaker than other soil types due to these characteristics. Objective: This study aimed to review the efficacy of the widespread use of ionic soil stabilization techniques for improving expansive clay soil properties by using different dosage levels that affect the properties of expansive clay soil. Results: expansive soil's high sulfate content, experiences swelling and heaving when stabilized with cement, lime, and fly flash. Engineers developed a new stabilizer called ionic soil stabilization to address this issue, improving strength and stiffness while reducing expansive soil permeability, compressibility, swelling, and shrinkage. Conclusion: Ionic soil stabilizer is preferred for improving clay soil because of its high efficiency and environmentally friendly stabilizer material, and low cost.

show abstract

“…There are two water layers if the major exchangeable cation is Ca2+ (calcium smectite), but only one water layer if the major exchangeable cation is Na+ (sodium smectite). Sodium smectite absorbs enough water to separate the particles [4], [10]. Because of its divalent cations, calcium smectite does not absorb enough water to promote particle separation.…”

Section: -Introductionmentioning

confidence: 99%

Reduction Heave of Swelling Soil under Isolated Footing with Flat and Ribbed Geofoam

Diab¹

2022

ERU Research Journal

View full text Add to dashboard Cite

Swelling soils are considered highly problematic soil due to the volume change actions.The cyclic heave and settlement of expansive soils could be the main reason for considerable damages to the structures, roads, and highways. Many available methodologies are followed to combat these problems of the swelling soils. This study presents the results of experimental and numerical research for effect of geofoam under footing rested on the swelling soil as a new technique for controlling the upward movement of structures over the swelling soils. Geofoam blocks are made of Expanded Polystyrene (EPS). It has lightweight, low price, and widely found in Egypt. It can be produced in many shapes and densities. The geofoam layer has two crosssections; flat and ribbed. Different densities and thicknesses of geofoam are considered in the study. There is a marked reduction in the case of the flat and ribbed geofoam layer with density 20kg/m3 and thickness 2 cm. The swelling soil was modeled by the finite element method ADINA software. Modeling of two cases; flat and ribbed cross-sections is performed by the critical state model with different densities and thicknesses of geofoam.

show abstract

Mineralogical Compositions of Some Indian Expansive Soils and Their Influence on Swelling Properties

Cited by 17 publications

References 41 publications

Combined effect of mineralogical and chemical parameters on swelling behaviour of expansive soils

Combined effect of mineralogical and chemical parameters on swelling behaviour of expansive soils

Influencing the Efficacy of Widespread Use of Ionic Soil Stabilization Techniques for Improving Expansive Clay Soil Properties

Reduction Heave of Swelling Soil under Isolated Footing with Flat and Ribbed Geofoam

Contact Info

Product

Resources

About