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Title:

EFFECT OF SLAG TYPE ON TUFA PRECIPITATE FORMATION

Accession Number:

00489539

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309047706

Abstract:

Tufa, a precipitated form of calcium carbonate, has been observed occluding underdrain outlets, catch basins, and storm sewers in various counties in east and northeast Ohio. Previous research determined that slag used as a subbase was the only factor directly related to the formation of tufa precipitate. However, no differentiation was made among the various slag types used. This study was initiated to determine whether different types of slag affected the formation of tufa precipitate. A total of 37 projects with different types of slag subbase were inspected. Subbases composed of blast furnace slags or steam boiler slag did not promote formation of tufa precipitate. However, because of the presence of free lime in steel slags and slacker aggregate, subbases composed of these materials did promote the formation of tufa precipitate (open hearth slag to a lesser extent than the other types). Long-term stock pile aging of open hearth slag appearaed to reduce the amount of free lime sufficiently to lessen the volume of tufa precipitate to acceptable levels.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1192, Soil Engineering. 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 Title:

Soil engineering

Monograph Accession #:

01413981

Authors:

Hurd, John Owen

Pagination:

p. 79-84

Publication Date:

1988

Serial:

Transportation Research Record

Issue Number: 1192
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309047706

Features:

Figures (7) ; References (3) ; Tables (2)

Uncontrolled Terms:

Open hearth slag

Old TRIS Terms:

Subject Areas:

Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw

Files:

TRIS, TRB, ATRI

Created Date:

Nov 30 1989 12:00AM

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