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Title:

MEMBRANE TECHNIQUE FOR CONTROL OF EXPANSIVE CLAYS

Accession Number:

00301589

Record Type:

Component

Availability:

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

Abstract:

Much northeastern Arizona highway is built on expansive clay. Changes in the moisture content of these clay subgrades cause volume changes that in turn cause excessive pavement deterioration and thus affect safety. During initial construction, a variety of experimental sections were built to test such stabilization methods as moisture and compaction control, chemical admixtures, electro-osmosis, overexcavation, ditch widening, underdrains, and membranes, alone or combined. Some methods were relatively successful when compared to the rapid deterioration of the untreated highways. These findings led to choosing impermeable rubber membranes to control moisture in the clay subgrades. The first trial of the technique at full contract scale was an 18-km (11-mile) overlay on I-40 completed in 1975. After the slopes were flattened for safety, the roadway prism under the asphalt concrete overlay and down the shoulder slopes was covered with the asphalt-rubber membrane. The control section was an adjacent overlay of the same design but with no membrane. In 1976, a 5-km (3-mile) overlay on US-89 with asphalt-rubber membranes and shoulder and ditch paving was constructed. This report presents the data on the three full-scale overlays on the success of the membrane. /Authors/

Supplemental Notes:

Publication of this paper sponsored by Committee on Subsurface Drainage and Committee on Environmental Factors Except Frost. 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 #:

01411055

Authors:

Forstie, Douglas
Walsh, Harold
Way, George

Pagination:

pp 49-53

Publication Date:

1979

Serial:

Transportation Research Record

Issue Number: 705
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

58th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1979-1-15 to 1979-1-19

Media Type:

Print

Features:

Figures (5) ; Maps; Photos; References; Tables (5)

Uncontrolled Terms:

Membranes

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways; Pavements

Files:

TRIS, TRB

Created Date:

Dec 19 1979 12:00AM

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