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FOURTH NATIONAL WORKSHOP ON BRIDGE RESEARCH IN PROGRESS:
 
RESEARCH ABSTRACT
 
Title:
Tests of Kevlar Prestressed Timber Beams for Bridge Girder Applications
Author(s) and Affiliation(s):
Terrel Galloway, Christian Fogstad, Jay A. Puckett and Charles W. Dolan Department of Civil and Architectural Engineering University of Wyoming, Laramie, WY Mike Ritter, Forest Products Laboratory, Madison, WI
 
Principal Investigator:
Christian Fogstad
Sponsor(s):
USDA Forest Products Laboratory and DuPont
Research Start Date:
January 1995
Expected Completion Date:
May 1996
Research Objectives:
This research examines the performance of glued-laminated timber beams reinforced with unstressed and prestressed Kevlar. In particular, the flexural strength of both unstressed and prestressed beams are compared against unreinforced control beams. The shear strength of the Kevlar-wood bond is also examined.
Expected Products or Deliverables:
Expected products include new knowledge on the behavior of Kevlar reinforced and prestressed glued-laminated timber beams. This knowledge may lead to timber beams which may be used to fabricate bridges or building girders. In addition, the prestressing method may be used to rehabilitate existing timber girders.

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