PERFORMANCE OF SOIL-AGGREGATE-FABRIC SYSTEMS IN FROST-SUSCEPTIBLE ROADS, LINN COUNTY, IOWA
Results of a three-year laboratory and field evaluation of a first-generation geotechnical construction fabric applied in soil-aggregate and granular-surfaced low-volume roadways indicate that fabric systems can, under certain circumstances, reduce thaw-induced deformations and improve field performance. Eleven test sections that involved different soil-aggregate-fabric systems were constructed on subgrades that displayed varying degrees of frost-related performance. Field evaluations were conducted over three-cycles of spring thaw plus summer healing. Laboratory simulation of freeze-thaw action along with strength and deformation parameters obtained through the Iowa K-test were used on a fabric-reinforced, frost-susceptible soil to provide insight into soil-fabric mechanisms and the potential for predicting field performance. Variation in the constructed soil-aggregate-fabric systems was achieved by locating fabric at different positions relative to layers of soil-aggregate or existing roadway materials, a choked macadam base course, and a thick granular backfill. Improvement was most noticeable where fabric was used as a reinforcement between a soil-aggregate surface and a frost-prone subgrade. Fabric used in conjunction with granular backfill, macadam base, and non-frost-susceptible subgrade did not appear justifiable. (Author)
- Record URL:
- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Low-Volume Roads. 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.
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Authors:
- Hoover, J M
- Pitt, J M
- Handfelt, L D
- STANLEY, R L
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Conference:
- 60th Annual Meeting of the Transportation Research Board
- Location: Washington District of Columbia, United States
- Date: 1981-1-12 to 1981-1-16
- Publication Date: 1981
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 6-14
- Monograph Title: General soils problems
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Serial:
- Transportation Research Record
- Issue Number: 827
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Aggregates; Deformation; Frost susceptible soil; Geotextiles; Low volume roads; Macadam; Reduction (Chemistry); Subgrade (Pavements)
- Geographic Terms: Linn County (Iowa)
- Old TRIS Terms: Reduction
- Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;
Filing Info
- Accession Number: 00348890
- Record Type: Publication
- ISBN: 0309032695
- Files: TRIS, TRB
- Created Date: Oct 30 1982 12:00AM