Koch bridge joint systems (FHWA-OK-93-08) 2716

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dc.contributor.sponsorOklahoma Department of Transportation. Materials and Research Division. Office of Research & Implementation
dc.creatorWilliams, Gary G.
dc.date.accessioned2018-09-06T21:52:08Z
dc.date.available2018-09-06T21:52:08Z
dc.date.issued1993-4
dc.description.abstractIn July and August of 1991, The Oklahoma Department of Transportation (OOOT) had 27 KOCH BRIDGE JOINT SYSTEMS (KOCH BJS) installed on an elevated portion of 1-40, in downtown Oklahoma City. When the KOCH BJS Units were inspected in January, 1992, 9 units had cracked. By April, 1992, 12 units had cracked. ODOT often places sand and/or deicers on bridges during winter, and this type of material tends to collect in open cracks. The BJS Units were next inspected in July, 1992. During this survey, it was noted that most of the cracks observed earlier had "healed". This was thought to be due to bridge deck expansion compressing the BJS Units together and the action of the traffic on the units. Sand and small rocks could be seen compressed into the modified AC where the cracks had been located. By March 1993, 19 of the units had cracked. Several has spalls located along the outside edges of the units, or adjacent to the cracks. Two of the units had open areas completely through the BJS Units. This was considered to be a substantial failure of the units, and the evaluation was terminated.
dc.description.peerreviewNo
dc.description.versionFinal Report, August 1991-March 1993
dc.format.extent28 pages
dc.format.extent9,142,651 bytes
dc.format.mediumapplication.pdf
dc.identifier.govdocFHWA-OK-93-08
dc.identifier.otherOklahoma Department of Transportation State Planning and Research item number 2716
dc.identifier.urihttps://hdl.handle.net/11244/301635
dc.languageen_US
dc.relation.ispartofseriesNo
dc.relation.requiresAdobe Acrobat Reader
dc.subject.keywordsWater tight bridge joint systems
dc.titleKoch bridge joint systems (FHWA-OK-93-08) 2716
dc.typeTechnical Report
dc.type.materialtext

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