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Stabilization/Solidification Of Lead-Contaminated Soil Using Cement And Rice Husk Ash, Hilmi Mahmud
Stabilization/Solidification Of Lead-Contaminated Soil Using Cement And Rice Husk Ash, Hilmi Mahmud
Hilmi Mahmud
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 …