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When expansion joints are designed applied and installed correctly it is not unusual to achieve a service life of 15 20 years in most industrial applications Read on to see what our partners at Garlock had to say about troubleshooting in order to expand the life expectancy of nonmetallic expansion joints
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Strip seal expansion joints are retractable and solid on both directions parallel and perpendicular to the bridge axis to ensure vehicles runs smoothly and no noise Strip seal expansion joints can prevent rainwater permeation and dirt clogging Strip seal expansion joints are simple and easy to install check maintain and clean
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Bridge expansion joints should be inserted as late as feasible in the construction process to allow for shrinkage creep and settlement movements to occur before the expansion joint gap is filled Expansion joints should be built such that all wearable pieces can be replaced or reset quickly ideally during off peak hours
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Abstract Premature failure of expansion joints is a concern for bridge owners After opening to traffic the Jiangyin suspension bridge experienced frequent damage in expansion joints and the problem remained unsolved even after replacement with new expansion joints and installation of viscous dampers at the girder end
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The most serious consequence of a strip seal failure is damage to the bridge substructure due to salt water and debris interacting with the substructure DESIGN OF STRIP SEAL EXPANSION JOINT Manufacturers Recommendations 29 the expected service life of a strip seal neoprene gland is fifteen to twenty years In
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GSI Highway Products is the exclusive Texas Distributor of RJ Watson s innovative Sealed Expansion Joint system the Silicoflex Joint Sealing was developed out of the need for a joint sealing system that was easy to install and offered a long effective sealing Silicoflex has sealed the void for providing a system that contains both of these features and has become a
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The expansion joints and the bearing underneath the bridge enable the bridge to move and relieve stress The Samuel De Champlain Bridge has 20 expansion joints distributed along its mile km span to accommodate that movement Expansion joints have to be watertight so when the joint opens up water cannot go through Gaudette said
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Brown s expansion joint systems support big projects like PENNDOT s I 95 South Reconstruction the Roosevelt Expressway and State Route 3 Chesnut Street in Philadelphia the I 75 Widening in Toledo Ohio the I 294 Reconstruction for Illinois Tollway the Witt Penn Bridge for the New Jersey Department of Transportation I 80 Bridges
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Metazeal Expansion Joints Metazeal is a UV stable pre formed closed cell low density polyethylene foam joint seal The material is typically used as an expansion joint seal or as a gasket material in bridge commercial building parking water treatment facility and industrial applications
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Bridge expansion joints are used to fill the gap between any two adjacent bridge spans and adapt to movements resulting from thermal expansion or contraction traffic vibrations
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Product Description DOSHIN AP Joint Systems is an asphaltic plug joint which is suitable for low to medium movement capacity expansion joints on highway bridges and other selective structures The maximum design movement for this joints are ±25mm on horizontally and ± on vertically DOSHIN AP Joint System extends to the full depth of
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Expansion joint Systems should be quiet be safe unobtrusive and provide a smooth ride be tolerant of snow plows and robust be watertight sealed joints be capable of self cleaning or debris tolerant be capable of accommodating design movements be durable as adjacent deck
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Two main factors determine the effectiveness of expansion joints Expansion Joint Selection Expansion Joint Installation Below is an example of both factors resulting in failure Surface inspection clearly shows joint expansion failure The subsurface reveals incorrect installation of the expansion joint
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• B315 Elastomeric Strip Seal Expansion Joints • B316 Modular Bridge Expansion Joints The RMS further has an overarching document the Bridge Technical Direction BTD2008/10 Bridge Deck Joint Selection Design Installation and Maintenance 5 The BTD provides comprehensive information and requirements relating to bridge deck expansion
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A bridge expansion joint EMSEAL EMV Seal is a field installed watertight seal used primarily in bridge and highway expansion gaps The design and
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Expansion joints fall into two categories — open joints and closed joints Open joints contain gaps that facilitate the passage of water and debris runoff through bridge joints Flexible or stiff troughs are generally installed beneath open joints to direct runoff away from bridge elements Closed joints produce a watertight seal that inhibits
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harmful to the substructure of the bridge Expansion joints are often one of the first components of a bridge deck to fail and repairing or replacing expansion joints is essential to extending the life of the bridge Failure can be due to increased traffic loading component fatigue low quality work or several other factors
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according to the literature [1 43] the common joint defects which affect the longitudinal displacement include i restriction of freedom of joint movement ii impact of rotation tilting
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APPENDIX A EXAMPLE 5 EXPANSION DEVICE 0 4 INCH ===== 1 APPENDIX A EXAMPLE 5 EXPANSION DEVICE STRIP SEAL 0 4 INCH GENERAL INFORMATION PROJECT VARIABLES Bridge Properties Superstructure Type Bridge Concrete Expansion Length L = ft Skew Skew = 20 ° Measured from a line normal to bridge L Thermal Coefficient 06 in /in /°F
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Choice of Deck Joint Current practice is to make decks integral with the abutments The objective is to avoid the use of joints over abutments and piers Expansion joints are prone to leak and allow the ingress of de icing salts into the bridge deck and substructure In general all bridges are made continuous over intermediate supports and
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Most bellows expansion joints have a life span of 10 11 years If a bellows expansion joint is located in a space with no access then the shell wall must be cut open which results in labor intensive and complex repairs that require a large number of man hours
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What is bridge joint An bridge joint or expansion bridge joint is a device designed to absorb the heat induced expansion and contraction of construction materials to withstand vibration to hold parts together or to allow movement due to ground settlement or earthquakes
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Installing and Maintaining Silicoflex After sandblasting if necessary and priming the bridge joint seal installation time is about 15 to 20 minutes per lane The lane can be reopened to traffic 30 to 60 minutes after installation In the event of a puncture Silicoflex can be easily repaired using our silicone based locking adhesive
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The durability of expansion joints is a major concern to bridge owners The maintenance cost of joints is relatively high than the initial cost This led to the design of jointless bridges Jointless bridges do not develop stress due to corrosion of joints accumulation of debris and differential elevation of joints Thippeswamy 2024
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Expansion joints are widely used during the construction of bridges They are the component which is essential for the life of a bridge Thus they must be properly installed and maintained to function properly The bridge expansion joints efficiently help with the movement and rotations of the superstructure of the bridge
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Failure Analysis There are perceptible warning signs when an expansion joint is failing Arch inversion indicating a system vacuum that has exceeded the joint s specified expansion value Cracking at the base of the arch which indicates the joint has been over elongated and should be replaced with one of the proper length
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BRIDGE EXPANSION JOINT Free download as PDF File pdf Text File txt or read online for free movement and result in a premature seal failure 2 DESIGN OF FINGER TYPE EXPANSION JOINT INSTALLATION STEPS WITH PICTORAL VEIW Reference Beam Reference Beam Block out area after deck slabs Prepare the Block out area
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The expansion seal is easily folded and inserted into the expansion gap and held in place by a bead of supplied silicone adhesive EMV Seal is available in five sizes to accommodate gaps
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Improved Bridge Expansion Joints Research Report KTC 11 17/SPR 405 10 1F Kentucky Transportation Center DESIGN AND CONSTRUCTION OF BRIDGE EXPANSION JOINTS SURVEY operation snow removal joint hardware seals or headers that fail and need to be replaced
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It is ADOT Bridge Group s policy to promote the design of bridges with minimal number of joints Bridge joints account for a large portion of bridge inspectors repair recommendations and maintenance personnel complaints reducing the number of joints would lower life cycle costs MOVEMENTS AND LOADS General
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