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Title:

SOLIDIFICATION/STABILIZATION OF REFINERY SLUDGE IN A POZZOLAN-CEMENTED CLAY MATRIX

Accession Number:

00646076

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309055717

Abstract:

A project involved solidification/stabilization of a hydrocarbon sludge in a silty clay matrix cemented with a pozzolanic lime-fly ash admixture. The compactable mixture can harden as a dimensionally stable landfill monolith that minimizes contaminant mobility. The solidification/stabilization product has more than 50% porosity to contain the sludge in the available airspace. This limits the strength to that of a firm cohesive soil, and mass behavior is evaluated by traditional geotechnical methods. Customary influences on fine soil permeability apply as well, with compactive effort alone affecting results over a range from 10 to the -5 power to 10 to the -7 power cm/sec. The solidification/stabilization process retards hydrocarbon mobilization primarily by physical microencapsulation. Less than 5% of the carbon was mobilized in 10-pore volumes of throughput in column leaching tests. This solidification/stabilization method appears to be suitable to allow reuse of the surface for industrial purposes as long as cap integrity is maintained. Consequently, the potential use of cemented clay solidification/stabilization for hydrocarbon-contaminated soils in highway rights of way is also indicated.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1424, Environmental Issues Related to Materials and Stabilization. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01398725

Language:

English

Authors:

Martin, J P
Cheng, S C
Fry, P A

Pagination:

p. 8-13

Publication Date:

1993

Serial:

Transportation Research Record

Issue Number: 1424
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309055717

Features:

Figures (8) ; References (13)

Uncontrolled Terms:

Contaminated soils; Stabilization

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways; Materials; I35: Miscellaneous Materials

Files:

TRIS, TRB

Created Date:

Apr 13 1994 12:00AM

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