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RECYCL ED PLASTICS FOR HIGHWAY
APPURTENANCES
| 题名： | RECYCL ED PLASTICS FOR HIGHWAY APPURTENANCES |
| 作者： | M. ALA SAADEGHVAZIRI, and KEITH M. MACBAIN |
| 关键词： | Recycled Plastics, Noise Wall, Guardrail Recycled Plastics Characteristics |
| 摘要： | This report presents the results of a comprehensive experimental and analytical study on the use of recycled plastic for highway appurtenances. The study included material tests (including creep and freeze / thaw tests) to determine mechanical properties of various recycled plastics, development of an analytical model to define stress strain relationship, member tests, finite element analysis, crash analysis, wind tests, and sound tests. Performance evaluation of a noise wall manufactured fi-om recycled plastics indicates that the proposed design is as effective as traditional designs. Analytical analyses and experimental tests indicate that a noise wall made of recycled plastics can easily withstand typical design wind load. Sound tests have also shown that the prototype panels, which are multi-layered, are very effective acoustically. Due to lightweight of recycled plastics the proposed design allows for greater panel length, thus, making more economical designs by reducing the number of posts. Due to high strength and durability of the material, it is also expected that the life-cycle cost of the proposed noise wall is less than that of current designs. Evaluation of the use of the material as guardrail posts is not conclusive due to lack of adequate performance requirements. In general, the material is viable and has merit for use in the design of other highway devices such as culverts and glare screens. To this end, preliminary results on its application in the development of a dual-purpose glare screen pedestrian fence are very satisfactory and encouraging. Future work must consider manufacturing, development of appropriate design criteria, and long term performance |
| 报告类型： | 科技报告 |
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