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Title:

EVALUATION OF FROST ACTION MITIGATION PROCEDURES FOR HIGHLY FROST-SUSCEPTIBLE SOILS

Accession Number:

00625713

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309054028

Abstract:

For areas of Ontario with significant frost penetration (more than 1.5 m) and frost-susceptible soils (silty sands to clayey silts) in the presence of moisture, significant pavement damage can result from both frost heaving and subsequent spring breakup. This frost-related flexible pavement damage is particularly acute in areas of variable soil and groundwater conditions. This is especially true with shallow, rapidly changing depths to bedrock that "trap" pockets of poor soils. The observation of pavement distresses in such circumstances, and experience with cost-effective frost action mitigation, is valuable in developing geotechnical evaluation techniques and practical pavement designs for such areas. The principal distress of severe wheelpath alligator cracking, its associated deformations, and residual frost heave are related to poor drainage (high groundwater or lack of drainage provisions) and poor loadcarrying characteristics and frost susceptibility of silty subgrades. Nonuniform pavement structure and subgrade support conditions because of utility installations also contribute to distress. Removing the frost-susceptible subsoils and replacing them with granular material and better drainage will eliminate most frost-related movements. But this is generally too costly. A less costly and fairly effective frost action mitigation approach, if properly constructed with approved materials, is the use of full or partial granular frost tapers in conjunction with deep drainage (typically in conjunction with utility installation in urban areas) or insulation using extruded expanded polystyrene. Overall examples of this approach from actual in-service pavements in the Muskokas area of north-central Ontario are presented.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1362, Aggregate and Pavement-Related Research. 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 #:

01405044

Language:

English

Authors:

MacKay, Michael H
Hein, David K
Emery, John J

Pagination:

p. 79-89

Publication Date:

1992

Serial:

Transportation Research Record

Issue Number: 1362
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309054028

Features:

Figures (4) ; Photos (3) ; References (6) ; Tables (3)

Geographic Terms:

Ontario (Province)

Old TRIS Terms:

Ontario (Province)

Subject Areas:

Design; Geotechnology; Highways; Hydraulics and Hydrology; Maintenance and Preservation; Pavements; I22: Design of Pavements, Railways and Guideways; I42: Soil Mechanics

Files:

TRIS, TRB

Created Date:

Jan 8 1993 12:00AM

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