Strength Development of Solidified/Stabilized Organic Waste and Optimum Treatment Design

Dimitris Dermatas, Mike Dadachov, Mark Mirabito, Xiaoguang Meng

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Artificially contaminated (spiked) natural soils were solidified/stabilized using various combinations of commonly used additives, such as lime, cement, fly ash, activated carbon, and silica fume. The effectiveness of the solidification/stabilization (S/S) processes was evaluated based on experimental findings from compaction testing, unconfined compressive shear strength, and X-ray diffraction (XRD). Correlations of limited reliability between unconfined compressive strength and penetrometer and torvane measurements were derived. Results from XRD experiments indicated that certain organic contaminants (i.e., naphthalene and pyrene) might impact the S/S processes for a given combination of additives. The type and amount of organic contaminants also affected the pozzolanic reactions. Specifically, the absence or small peak intensity of pozzolanic product XRD patterns for a given combination of additives was a good indication that the type and the amount of organic contaminant present inhibited pozzolanic reactions. This phenomenon was tested and confirmed for actual field-contaminated samples.

Original languageEnglish
Pages (from-to)1363-1372
Number of pages10
JournalJournal of the Air and Waste Management Association
Volume53
Issue number11
DOIs
StatePublished - Nov 2003

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