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Shvoong Home>Science>Architecture>EVALUATION OF EPOXY ENCAPSULATED TIMBER PILES Summary

EVALUATION OF EPOXY ENCAPSULATED TIMBER PILES

Article Summary   by:toffi_75     Original Authors: Nakin Suksawang; Hani Nassif; Ozgul Rozkul; Ali Maher; Abbas Sarmad
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Many bridges are supported on timber piles that have significant deterioration due to fungal decay of the wood. A method of repair is proposed to encase the damaged timber pile in Glass Fiber Reinforced Polymer (GFRP) wraps that are injected with special epoxy mortar. The composite repaired piles need to be tested to determine their ultimate load capacity under combined shear and flexure. This paper evaluates the behavior of extracted repaired timber piles under lateral loads. Sixteen repaired timber piles are extracted from actual conditions and tested as cantilever beams. Special experimental setup is designed to test the piles under flexure and shear. Various types of measurements such as deflections and strains are measured at different locations of the pile. Results show that all repairing systems increase the stiffness and lateral load capacity of existing timber piles (Douglas fir) regardless of the dimensions of the cross section. The stiffness and lateral load capacity of the repaired timber pile could be as high as that of the Greenheart but requires more epoxy mortar thickness.
Published: August 29, 2007   
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