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Title: RECYCLED PLASTICS FOR HIGHWAY AGENCIES
Accession Number: 00625172
Record Type: Component
Availability: Find a library where document is available Abstract: A description is presented of ongoing research by the Florida Department of Transportation on feasibility studies to use recycled plastic wastes for fence line posts and guardrail posts as mandated by a 1988 state law. All test work focused on acquisition of data for selected essential properties and characteristics, including durability; resistance to insects, soil microorganisms, and environmental exposure; water absorption; and flexural and tensile strength. Initial studies entailed property measuremnets of high-density polyethylene sheeting (milk bottles) used in A-frame barricades. Low strain rate tests produced failure at a strain of approximately 1.0 for flawed material but did not fail for flaw-free material at a strain of 2.6. Large-diameter posts showed major variations in composition and properties. Exposure tests showed warpage on posts with small cross sections. Flexure to failure whole post tests indicated that some posts were stronger than concrete and were possible candidates for guardrail posts. Resistance tests for soil microorganisms showed no effect. Boiling water and boiling saline had no effect on dimensional changes on most post discs. All discs absorbed liquid after 8 to 10 hr of exposure. Insect exposure tests (fire ants and termites) indicate that posts containing cellulosic material may not be suitable in termite-infested areas due to high weight loss. A fence post specification framework is proposed. Other components currently under testing and evaluation are listed.
Supplemental Notes: This paper appears in Transportation Research Record No. 1345, Geoenvironmental and Engineering Properties of Rock, Soil, and Aggregate. 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 #: 01404972
Language: English
Authors: Smith, Lawrence LRamer, Richard MPagination: p. 60-66
Publication Date: 1992
Serial: ISBN: 0309052084
Features: Figures
(1)
; Photos
(9)
; References
(6)
; Tables
(4)
TRT Terms: Uncontrolled Terms: Subject Areas: Environment; Geotechnology; Highways; Materials; Research; Safety and Human Factors; I35: Miscellaneous Materials
Files: TRIS, TRB, ATRI
Created Date: Oct 22 1993 12:00AM
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