A review of the mechanical and leaching performance of stabilized/solidified contaminated soils

@article{Kogbara2014ARO,
  title={A review of the mechanical and leaching performance of stabilized/solidified contaminated soils},
  author={Reginald B. Kogbara},
  journal={Environmental Reviews},
  year={2014},
  volume={22},
  pages={66-86}
}
Stabilization/solidification (S/S) technology, which basically involves chemical fixation and immobilization of contaminants (primarily metals) in the matrix of cementitious binders, is widely used for treatment of contaminated soils. This paper presents a critical review of the performance of commonly used blended binder systems in S/S technology. The binders considered are Portland cement and blends of cement–fly ash, cement–slag, lime–slag, and lime–fly ash. This work compares and evaluates… Expand

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References

SHOWING 1-10 OF 89 REFERENCES
Mechanical and leaching behaviour of slag-cement and lime-activated slag stabilised/solidified contaminated soil.
TLDR
The results show that GGBS activated by cement and lime would be effective in reducing the leachability of contaminants in contaminated soils. Expand
Cement–fly ash stabilisation/solidification of contaminated soil: Performance properties and initiation of operating envelopes
Abstract This study was aimed at evaluating the mechanical and pH-dependent leaching performance of a mixed contaminated soil treated with a mixture of Portland cement (CEMI) and pulverised fuel ashExpand
pH-dependent leaching behaviour and other performance properties of cement-treated mixed contaminated soil.
TLDR
Geotechnical properties such as unconfined compressive strength (UCS), hydraulic conductivity and porosity were assessed over time and the range of operating variables that lead to acceptable performance described. Expand
An Overview of Stabilization/Solidification Technique for Heavy Metals Contaminated Soils
Recently, in-situ and ex-situ stabilization/solidification of heavy metals contaminated soils (HMCS) using lime, cement, and other binders has been widely adopted in geoenvironmental engineeringExpand
UTILIZATION OF FLY ASH FOR STABILIZATION/SOLIDIFICATION OF HEAVY METAL CONTAMINATED SOILS
Abstract Pozzolanic-based stabilization/solidification (S/S) is an effective, yet economic remediation technology to immobilize heavy metals in contaminated soils and sludges. In the present study,Expand
Process envelopes for stabilisation/solidification of contaminated soil using lime–slag blend
TLDR
The results show that greater than 20% dosage would be required to achieve a balance of acceptable mechanical and leaching properties, and overall, the process envelopes for different performance criteria depend on the end-use of the treated material. Expand
Strength Comparison of Cement Solidified/Stabilized Soils Contaminated by Lead and Copper
Cement can be used as a binder for contaminated land remediation by reducing the leachability of contaminants. The contaminated soils can achieve a higher strength after cementExpand
Environmental assessment of a cement-based solidified soil contaminated with lead
Abstract The use of equilibrium-based and mass transfer rate extraction tests has been proposed to provide an integrated assessment of leaching processes from stabilized/solidified wastes. TheExpand
Solidification/Stabilization of Organic and Inorganic Contaminants using Portland Cement: A Literature Review
The treatment of hazardous wastes using cement-based solidification-stabilization (S-S) is of increasing importance as an option for remediating contaminated sites. Indeed, among the variousExpand
Leaching of metals from soil contaminated by mining activities.
Stabilization/solidification (s/s) is one of the most effective methods of dealing with heavy metal contaminated sites. The ability of lime and cement stabilization to immobilize Pb, Cu and FeExpand
...
1
2
3
4
5
...