SYMPOSIA PAPER Published: 01 January 1988
STP26432S

Methods for Evaluating Solidified Waste

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A number of methods for characterizing solidified waste are currently being assessed in the EC/EPA/AEC/Industry Cooperative Study. These are short-term laboratory tests which yield information on material properties (bulk density, specific gravity, and moisture content), ability to maintain physical integrity (unconfined compressive strength and weathering resistance—freeze/thaw and wet/dry), potentials for release of contaminants by advective transport (permeability) and dissolution (acid neutralization capacity, Toxicity Characteristic Leaching Procedure—TCLP—and equilibrium leaching), indication of long-term rate of contaminant release (dynamic leaching), and containment mechanisms (sequential extraction). A brief description is given of these tests, their rationale, and their utilization.

Some of the methods were developed elsewhere and have been adopted or adapted with minor modifications. Others have been developed specifically for the cooperative study. Emphasis is thus given to the latter, specifically to the method for quantifying resistance to wet/dry cycling. The development of this method and preliminary results are described, showing the reproducibility and ability to detect differences in weathering resistance of various solidified products.

Author Information

Hannak, P
Alberta Environmental Centre, Vegreville, Alberta, Canada
Liem, AJ
Alberta Environmental Centre, Vegreville, Alberta, Canada
Côtè, PL
Wastewater Technology Centre, Environmental Protection Service, Environment Canada, Burlington, Ontario, Canada
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Details
Developed by Committee: D34
Pages: 67–75
DOI: 10.1520/STP26432S
ISBN-EB: 978-0-8031-5068-3
ISBN-13: 978-0-8031-1175-2