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Title:

ALTERNATIVES TO SODIUM CHLORIDE FOR HIGHWAY DEICING (ABRIDGMENT)

Accession Number:

00334200

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309031214

Abstract:

A search has been made for road deicing chemicals to replace sodium chloride (NaCl). The impetus for this search stems from the numerous drawbacks associated with the current extensive use of NaCl as a road deicer. All classes of chemical compounds were reviewed. Deletions were made on the basis of such pertinent criteria as water solubility and freezing-point lowering, corrosion, toxicity, flammability, relative cost or cost potential, and effect on soils, plants, and water supplies. Low molecular weight and high solubility were primary qualifications. Waste products were considered as possible raw-material sources. Two candidate deicers have been selected that, if used, would result in total costs of about one-half those associated with the use of NaCl. Both materials can be made from waste cellulose. Neither is corrosive. One of them, methanol, reacts almost immediately on contact with snow and ice but is less persistent than the other candidate or than NaCl. The other candidate, calcium magnesium acetate (CMA), acts at about the same rate as NaCI in the temperature range of common activity and shows about the same persistence. In strong contrast to NaCl, CMA is a corrosion inhibitor, is beneficial to most soils, and has no potential to harm drinking supplies.

Supplemental Notes:

Publication of this paper sponsored by Committee on Winter Maintenance. 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 #:

00361327

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Dunn, S A
Schenk, R U

Pagination:

p. 12-15

Publication Date:

1980

Serial:

Transportation Research Record

Issue Number: 776
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

60th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1981-1-12 to 1981-1-16

ISBN:

0309031214

Features:

References (30)

Subject Areas:

Design; Environment; Highways; Maintenance and Preservation; Planning and Forecasting; I21: Planning of Transport Infrastructure; I62: Winter Maintenance

Files:

TRIS, TRB

Created Date:

Oct 28 1981 12:00AM

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