United States Department of Transportation
i
Improved materials systems in marine piling after nine years of exposure in Yaquina Bay : Newport, Oregon : state study : research.
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1990-02-01
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By Layor, H. M.
[PDF-417.23 KB]
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Abstract:From 1979 to 1983 the Oregon State Highway Division participated with the FHWA in a demonstration Project to evaluate the feasibility of manufacturing precast, prestressed marine piles from advanced structural materials. The materials that were evaluated included polymer concrete, polymer impregnated concrete, internally sealed concrete, and latex modified concrete. In addition to the prestressed piles, miniature, conventional concrete piles with epoxy coated rebar were evaluated. Included in the report are:
A description of the laboratory work that preceded the preparation of the specifications.
A description of the manufacturing processes and problems fro each system.
A two year performance evaluation on each system.
After manufacture, the polymer concrete piles were structurally unsatisfactory since nearly 1/3 of the prestressing force was lost to elastic shortening, shrinkage and creep.
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