Swelling of Natural Soil Subjected to Acidic and Alkaline Contamination

This paper aims at establishing the influence of acidic and alkalinepore fluids on the swell behaviour of an expansive soil. Aseries of laboratory one dimensional free swell tests were performedto study the behaviour of soil in acidic and alkaline environment.Three different concentrations of sodium...

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Veröffentlicht in:Periodica polytechnica. Civil engineering. Bauingenieurwesen 2017-01, Vol.61 (3), p.611
Hauptverfasser: Ponnapureddy, Hariprasad Reddy, Chavali, Rama Vara Prasad, Pillai, Rakesh J
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Chavali, Rama Vara Prasad
Pillai, Rakesh J
description This paper aims at establishing the influence of acidic and alkalinepore fluids on the swell behaviour of an expansive soil. Aseries of laboratory one dimensional free swell tests were performedto study the behaviour of soil in acidic and alkaline environment.Three different concentrations of sodium hydroxide andsulphuric acid solutions were used as pore fluids to understandthe influence of variable concentrations on the swell behaviourof soil. Results showed that, the swelling of soil that interactedwith sodium hydroxide solution initially increased at lower concentrationand then decreased with increase in concentration.In contrast, the swelling initially decreased at lower concentrationof sulphuric acid and then increased with increase inconcentration of solution. The complexity in the swell behaviourof contaminated soil was assessed by thoroughly investigatingthe mineralogy and microstructure alterations by carrying outX-ray diffraction analysis, Scanning electron microscopy andEnergy dispersive analysis of X-ray at the end of interaction.
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects Acidic soils
Caustic soda
Complexity
Contamination
Electron microscopy
Expansive soils
Fluids
Hydroxides
Microstructure
Mineralogy
Pollution
Scanning electron microscopy
Sodium
Sodium hydroxide
Soil
Soil contamination
Soil investigations
Soil pollution
Soil swelling
Soils
Solutions
Sulfuric acid
Sulphuric acid
Swell
Tests
X-ray diffraction
title Swelling of Natural Soil Subjected to Acidic and Alkaline Contamination
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