Bridge-in-a-Backpack(TM). Task 8 : investigation of bridge performance under extreme temperatures.
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2014-12-01
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Abstract:This report includes fulfillment of Task 8 of a multi-task contract to further enhance concrete filled FRP tubes, or
the Bridge in a Backpack.
One recurring question has been its performance in fire conditions, mainly small campfires and handheld torches.
Previous testing for this technology at the Composites Center has looked at its ignitability using small coupons or
sections of the concrete filled arch. This task provides a more extensive look at the performance of this particular
composite system. This project consisted of three phases including: laboratory coupon tests; large scale field fire
tests of a traditional steel girder and concrete deck specimen and a hybrid composite arch test specimen; and a
laboratory structural test to evaluate residual capacity of the composite arches after the field fire test. The principal
objective of this project was to compare the performance of the two full scale test specimens when exposed to the
same fire environment.
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