Stabilization and Solidification of a Clay Soil Contaminated with MTBE

Estabragh, A. R.; Kholoosi, Mohammad Mehdi; Ghaziani, Fatemeh

doi:10.1061/(asce)ee.1943-7870.0001248

Cited by 14 publications

(15 citation statements)

References 35 publications

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“…The test results are largely consistent with the majority of reported results found in the more recent literature sources (e.g. Ratnaweera and Meegoda 2006;Khamehchiyan et al 2007;Estabragh et al 2016bEstabragh et al , 2016cNasehi et al 2016;Estabragh et al 2017). Any inconsistency can be attributed to the differences between the type of soil, the type of contaminant agent, and the range of tested degrees of contamination.…”

Section: Environmental Geotechnicssupporting

confidence: 89%

“…cement, lime and fly-ash, the proposition has gained increased attention among practicing engineers (e.g. Tuncan et al 2000;Trembley et al 2002;Al-Rawas et al 2005;Hassan et al 2005;Estabragh et al 2016bEstabragh et al , 2016cEstabragh et al , 2017.…”

Section: Environmental Geotechnicsmentioning

confidence: 99%

“…Samples were compressed by a constant displacement rate of 1 mm/min, as commonly adopted in the literature (e.g. Fatahi et al 2012;Estabragh et al 2016bEstabragh et al , 2016cEstabragh et al , 2017Soltani et al 2017a).…”

Section: Unconfined Compression Testmentioning

confidence: 99%

“…The stress-strain response of a clay soil in the face of a varying pore-fluid composition is mainly governed by the net result of two different opposing or non-opposing mechanisms, i.e. physico-chemical interactions and mechanical factors (Ratnaweera and Meegoda 2006;Dolinar and Trauner 2007;Zhan et al 2008;Olgun and Yıldız 2010;Liu et al 2015;Estabragh et al 2016bEstabragh et al , 2016cEstabragh et al , 2017. The physico-chemical effects are commonly interpreted by means of the diffuse double layer concept, which has been well-documented in the literature.…”

Section: Environmental Geotechnicsmentioning

confidence: 99%

“…In general, an increase in pore-fluid viscosity, as the case with the used contaminant agents in this study (see Table 3), facilitates sliding of particles during unconfined loading due to lubrication of soil particles. This in turn promotes a reduced friction among particles, which is accompanied by a decreased strength and stiffness often coupled with an improved ductility (Meegoda and Ratnaweera 1994;Ratnaweera and Meegoda 2006;Khamehchiyan et al 2007;Singh et al 2008;Liu et al 2015;Estabragh et al 2016bEstabragh et al , 2016cNasehi et al 2016;Estabragh et al 2017;Soltani et al 2017a).…”

Section: Environmental Geotechnicsmentioning

confidence: 99%

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Experiments and dimensional analysis of contaminated clay soils

Soltani

Estabragh

Taheri

et al. 2019

Environmental Geotechnics

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Section: Environmental Geotechnicssupporting

confidence: 89%

Section: Environmental Geotechnicsmentioning

confidence: 99%

Section: Unconfined Compression Testmentioning

confidence: 99%

Section: Environmental Geotechnicsmentioning

confidence: 99%

Section: Environmental Geotechnicsmentioning

confidence: 99%

See 3 more Smart Citations

Experiments and dimensional analysis of contaminated clay soils

Soltani

Estabragh

Taheri

et al. 2019

Environmental Geotechnics

View full text Add to dashboard Cite

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Two Paths to Oxidative C−H Amination Under Basic Conditions: A Theoretical Case Study Reveals Hidden Opportunities Provided by Electron Upconversion**

Eckhardt

Elliott

Alabugin

et al. 2022

Chemistry A European J

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Traditionally, cross-dehydrogenative coupling (CDC) leads to CÀ N bond formation under basic and oxidative conditions and is proposed to proceed via a two-electron bond formation mediated by carbenium ions. However, the formation of such high-energy intermediates is only possible in the presence of strong oxidants, which may lead to undesired side reactions and poor functional group tolerance. In this work we explore if oxidation under basic conditions allows the formation of three-electron bonds (resulting in "upconverted" highly-reducing radical-anions). The benefit of this "upconversion" process is in the ability to use milder oxidants (e. g., O 2 ) and to avoid high-energy intermediates. Comparison of the two-and three-electron pathways using quantum mechanical calculations reveals that not only does the absence of a strong oxidant shut down two-electron pathways in favor of a three-electron path but, paradoxically, weaker oxidants react faster with the upconverted reductants by avoiding the inverted Marcus region for electron transfer.

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Remediation of a clay soil contaminated with phenanthrene by using mixture of bentonite and cement

Estabragh

Amini

Lull

2022

Env Prog and Sustain Energy

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This paper investigates the remediation of a clay soil contaminated with phenanthrene, through a series of experimental tests. Mixtures of bentonite-cement (with bentonite to cement ratios of 1:1 and 3:1) at 20% and 30% were used as agents.Unconfined Compressive Strength (UCS) tests were performed on samples with different percentages of agents and curing times. Leaching tests were also conducted on contaminated samples at different curing times by using spectrophotometer apparatus. The results indicated that using the mixtures of bentonite-cement as an agent for natural and contaminated soil leads to an increase in the strength of the soils. The results of leaching tests showed that, for a given percentage of bentonite-cement mixture with different bentonite to cement ratios, the concentration of phenanthrene decreased with increasing the curing time. The bentonite-cement ratio of 1:1 was found to be more effective than the 3:1 ratio in reducing the concentration of phenanthrene. Sensitivity analysis showed that the percentage of bentonite and curing time are more effective in the reduction of phenanthrene than the percentage of cement.

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Stabilization and Solidification of a Clay Soil Contaminated with MTBE

Cited by 14 publications

References 35 publications

Experiments and dimensional analysis of contaminated clay soils

Experiments and dimensional analysis of contaminated clay soils

Two Paths to Oxidative C−H Amination Under Basic Conditions: A Theoretical Case Study Reveals Hidden Opportunities Provided by Electron Upconversion**

Remediation of a clay soil contaminated with phenanthrene by using mixture of bentonite and cement

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