Evaluation of bridge decks using non-destructive evaluation (NDE) at near highway speeds for effective asset management.
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2015-06-01
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Abstract:Remote sensing technologies allow for the condition evaluation of bridge decks at near highway speed. ; Data collection at near highway speed for assessment of the top of the concrete deck and proof of ; concept testing for the underside of the deck was conducted for surface and subsurface evaluation. 3-D ; photogrammetry was combined with passive thermography to detect spalls, cracks and delaminations ; for the top of the concrete bridge deck, while active thermography was investigated for bottom deck ; surface condition assessment. Successful field demonstrations validated results comparable to MDOT ; inspections. Recommendations for immediate implementation for condition assessment of the top of a ; concrete deck are included for introducing the BridgeViewer Remote Camera System into current ; bridge inspections to provide a photo inventory of the bridge deck captured at 45mph and above using ; GoPro cameras. The combined optical photogrammetry (3DOBS) and passive thermography ; technologies provide an objective analysis of spalls, cracks and suspected delaminations while ; traveling at near highways speed. Using the same 3DOBS technology with higher resolution cameras ; and slower speeds, cracks can be detected as small as 1/32 in. Laboratory and field demonstrations ; show active thermography would benefit from further development as a remote sensing technology for ; condition assessment on the underside of the bridge deck.
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Alternate URL:http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p03of24_495969_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p04of24_495970_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p05of24_495971_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p06of24_495972_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p07of24_495973_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p08of24_495974_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p09of24_495975_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p10of24_495976_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p11of24_495977_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p12of24_495978_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p13of24_495980_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p14of24_495983_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p15of24_495984_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p16of24_495985_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p17of24_495987_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p18of24_495988_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p19of24_495986_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p20of24_495989_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p21of24_495990_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p22of24_495991_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p01of24_495967_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p23of24_495992_7.pdf ; http://ntl.bts.gov/lib/55000/55300/55381/RC1617_p24of24_495993_7.pdf
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Main Document Checksum:urn:sha256:08f1a39c4f88091a16e190abea69243bd93466d4a4b20fc09e915ca634da620d