TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

USES OF WASTE FOUNDRY SANDS IN CIVIL ENGINEERING

Accession Number:

00713593

Record Type:

Component

Availability:

Find a library where document is available


Order URL: http://worldcat.org/issn/03611981

Abstract:

Molds and cores for metal castings are normally sands with chemical or clay binders and other additives. After the casting is complete, the sand is disaggregated, and it is judged whether it is suitable for reuse. However, after several uses, the sand is no longer suitable and is designated as a waste foundry sand (WFS). Such waste has been disposed in landfills, public and private. Although some WFSs may contain excessive amounts of harmful heavy metals, those discarded after ferrous castings contain only iron, and this concentration is controlled by magnetic extraction from the waste. At this point, only WFSs from ferrous castings are thought to be environmentally acceptable. Through laboratory study of the mechanical and physical properties of WFSs from the greensand, shell, and chemically bonded processes for ferrous castings, a number of civil engineering uses have been identified: embankment fill, subgrade, flowable fill, and fine aggregate replacement in asphaltic concrete. The index properties of the WFSs and the appropriate test parameters for its various acceptable uses are described. The next step is to build demonstration and implementation projects to prove the practicality of the use and to provide long-term evidence of the absence of significant environmental effects.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1486, Environmental Testing and Evaluation of Stabilized Wastes, Performance of Stabilized Materials, and New Aggregate Tests. 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 #:

01399784

Language:

English

Authors:

Javed, Sayeed
Lovell, C W

Pagination:

p. 109-113

Publication Date:

1995

Serial:

Transportation Research Record

Issue Number: 1486
Publisher: Transportation Research Board
ISSN: 0361-1981

Features:

Figures (2) ; References (9) ; Tables (2)

Uncontrolled Terms:

Fill (Embankment)

Old TRIS Terms:

Subject Areas:

Environment; Geotechnology; Highways; Materials; I33: Other Materials used in Pavement Layers

Files:

TRIS, TRB

Created Date:

Nov 22 1995 12:00AM

More Articles from this Serial Issue: