Bridge bearing replacement 1 mm precision during lifting lowering - FPT

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Support and using deterioration protective chemical: If old bearing pedestal is to be restored, the cracked surface will be completely cleaned up by wire brush to get rid of loose rust particles then exposed support will be cleaned of all rust and millscale by mechanical wire brush, to removal of oil or greasy residues and also the loss of support will be compensated by tying of brand-new support.

The support's rust, if any, will be removed by applying rust removal, chemical (Reebaklens RR of Fosroc or equivalent item of BASF or Sika) and cleansing of support with a mechanical wire brush. After that using one coat of zinc abundant finishing of Nitozinc Primer of Fosroc or comparable item of BASF or Sika).

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Micro-concrete: Flowable mix of 1part by weight of Micro-concrete power, 1 part by weight of grit/Aggregate (approximately 10mm) and necessary water needed for workability. The mix shall be combined thoroughly by mechanical stirred for about 3 mins. D. Applying: After offering essential water tight shuttering, the flowable mix should be put and there is no need for compaction as it is flowable and self condensing mix.

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Treating: The treating of pedestal shall be provided for at least 7 days. Upkeep of bridge bearings: 1. Surrounding of all bearings will be cleared of silt and particles. 2. In Full Article of POT-PTFE bearings, I have actually seen sometimes that momentary clamp did not detach after setup of the bearing.

So after installation of POT-PTFE bearings, You require to take notice of disconnect the temporary clamp. 3. In case of metal bearings, dirt, rust and rust are typical solutions due to weather affect. For Bearing rust removal and Cleaning/repainting: The following stepwise treatment is to be followed: A. The location around the bearings and their pedestals shall be cleared of all particles, plants, dust, etc.

B. Fresh graphite grease as approved by the Engineer will be used to the surface areas which are siding, rotating or moving due to motion in bearings. C. All other surfaces of the metallic bearing will be cleaned of all rusts, rust and a coat of anticorrosive oil paint used. Click the following links to find out more: # Bridge Bearing Replacement Treatment, # Bridge Bearing Installation Treatment #Procedure For Maintenance And Rehab Of Bridges, #Bridge Fixing, #Bridge Rehab, #Bridge Maintenance, #Bridge Fixing and Rehab, #Bridge Strengthening,, #Road and Bridge Style.