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Title:

CHEMICAL UNDERCUTTING OF ICE ON HIGHWAY PAVEMENT MATERIALS

Accession Number:

00620424

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309051118

Abstract:

Experiments were conducted to investigate the destruction of the ice-substrate bonds by chemical undercutting. The undercutting experiments determined the undercut area, as a function of time, of three deicers at three temperatures on highway core samples and laboratory-produced specimens. Tests were conducted at temperatures of 25 deg F (-4 deg C), 15 deg F (-9 deg C), and 5 deg F (-15 deg C) using all the substrates in the as-received, but cleaned, condition. The three deicers--NaCl, CaCl2, and ethylene glycol--were used for all temperature-substrate combinations. The substrates included portland cement concrete, dense-graded asphalt, open-graded asphalt, rubber-modified asphalt core samples, and laboratory-produced specimens made of portland cement concrete and dense-graded asphalt. Undercutting action was also investigated on smooth highway core samples and smooth laboratory-produced specimens at selected temperatures. Linear regression models with good predictive power were developed to predict the undercutting behavior of deicer material for given combinations of pavement type, surface condition, and temperature as a function of time. Using these regression models, the following conclusions were drawn: (a) at 25 deg F, sodium chloride produces larger undercut areas than does calcium chloride when applied to as-received core samples of dense-graded and open-graded asphalt; (b) however, at 25 deg F, calcium chloride produces more undercutting action than does sodium chloride when applied to as-received core samples of portland cement concrete and rubber-modified asphalt; (c) at 15 deg F and 5 deg F, calcium chloride produces more undercutting than does sodium chloride for all four as-received pavement core samples; and (d) at 25 deg F and 15 deg F, the as-received laboratory-produced specimens tended to be undercut more extensively than the corresponding core samples at these temperatures.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1304, Highway Maintenance Operations and Research 1991. 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 #:

01407142

Authors:

Blackburn, Robert R
Bauer, Karin M
McElroy, A D
Pelkey, Jean E

Pagination:

p. 230-242

Publication Date:

1991

Serial:

Transportation Research Record

Issue Number: 1304
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309051118

Features:

Figures (10) ; References (8) ; Tables (4)

Old TRIS Terms:

Subject Areas:

Highways; Maintenance and Preservation; Vehicles and Equipment; I62: Winter Maintenance

Files:

TRIS, TRB

Created Date:

Mar 31 1992 12:00AM

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