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Stabilization/solidification of lead-contaminated soil using cement and rice husk ash

Yin, Chun-Yang / Mahmud, Hilmi Bin / Shaaban, Md Ghazaly

This paper presents the findings of a study on solidification/stabilization (S/S) of lead-contaminated soil using ordinary Portland cement (OPC) and rice husk ash (RHA). The effects of varying lead concentrations (in the form of nitrates) in soil samples on the physical properties of their stabilized forms, namely unconfined compressive strength (UCS), setting times of early mixtures and changes in crystalline phases as well as chemical properties such as leachability of lead, pH and alkalinity of leachates are studied. Results have indicated that usage of OPC with RHA as an overall binder system for S/S of lead-contaminated soils is more favorable in reducing the leachability of lead from the treated samples than a binder system with standalone OPC. On the other hand, partial replacement of OPC with RHA in the binder system has reduced the UCS of solidified samples.

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Stabilization/solidification of lead-contaminated soil using cement and rice husk ash

Yin, Chun-Yang / Mahmud, Hilmi Bin / Shaaban, Md Ghazaly

This paper presents the findings of a study on solidification/stabilization (S/S) of lead-contaminated soil using ordinary Portland cement (OPC) and rice husk ash (RHA). The effects of varying lead concentrations (in the form of nitrates) in soil samples on the physical properties of their stabilized forms, namely unconfined compressive strength (UCS), setting times of early mixtures and changes in crystalline phases as well as chemical properties such as leachability of lead, pH and alkalinity of leachates are studied. Results have indicated that usage of OPC with RHA as an overall binder system for S/S of lead-contaminated soils is more favorable in reducing the leachability of lead from the treated samples than a binder system with standalone OPC. On the other hand, partial replacement of OPC with RHA in the binder system has reduced the UCS of solidified samples.

Stabilization/solidification of lead-contaminated soil using cement and rice husk ash

Yin, Chun-Yang / Mahmud, Hilmi Bin / Shaaban, Md Ghazaly

This paper presents the findings of a study on solidification/stabilization (S/S) of lead-contaminated soil using ordinary Portland cement (OPC) and rice husk ash (RHA). The effects of varying lead concentrations (in the form of nitrates) in soil samples on the physical properties of their stabilized forms, namely unconfined compressive strength (UCS), setting times of early mixtures and changes in crystalline phases as well as chemical properties such as leachability of lead, pH and alkalinity of leachates are studied. Results have indicated that usage of OPC with RHA as an overall binder system for S/S of lead-contaminated soils is more favorable in reducing the leachability of lead from the treated samples than a binder system with standalone OPC. On the other hand, partial replacement of OPC with RHA in the binder system has reduced the UCS of solidified samples.

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Title:

Stabilization/solidification of lead-contaminated soil using cement and rice husk ash

Contributors:

Yin, Chun-Yang (author) / Mahmud, Hilmi Bin (author) / Shaaban, Md Ghazaly (author)

Published in:

Journal of Hazardous Materials ; 137 ; 1758-1764

Publication date:

2006

Size:

7 Seiten, 8 Bilder, 3 Tabellen, 12 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.jhazmat.2006.05.013

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Blei , Erde (Boden) , Dekontamination , Portlandzement , Verfestigen , Reis , Abfall (Landwirtschaft) , Festigkeit , Auslaugen (Mineralogie) , Sickerwasser , pH-Wert

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