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Repair Concrete Bridges by Vicky Smith
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Repair Concrete Bridges |
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Business
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Major components of a concrete bridge include the deck, girders, columns, walls and abutments. Concrete bridges require minor repair as a part of normal maintenance activities. Major repair is required in the event of the failure of a portion of the bridge due to a vehicle strike, fire or excessive corrosion. Experienced crews apply specialized materials, techniques and sandblasting equipment to complete bridge repair assignments. The materials and restoration procedure depend on the nature and magnitude of the required repair. Instructions as follows: Firstly, assess the required repair. Visual inspection and engineering testing procedures are used to assess bridge condition and to identify and plan required repairs. Repairs may be required to refurbish the bridge aesthetics or to restore structural capacity. Typical maintenance activities include filling of cracks and the removal and replacement of spalled concrete. Deck repairs involve the repair or replacement of the surface layer, or wearing course, of the deck along with repair or replacement of expansion joints and bridge drains. Major repairs may involve restoration or the removal and replacement of major bridge elements. Secondly, plan the materials and equipment required for the repair. Products for routine maintenance include concrete, epoxies, sealers and concrete bonding agents. More complicated repairs require reinforcing steel, joints and bearings. Thirdly, prepare the project area for the repair procedure. Partial or complete closure of the bridge to all vehicle and pedestrian traffic may be required to complete the repair. Netting and other techniques are used to control and collect loose materials or tools removed from the bridge. Fourthly, implement the bridge repair procedure. Major concrete repairs require the placement of formwork to match the contours of the existing bridge elements. Concrete is pumped into the forms and small vibrators are used to consolidate the material. Repairs to reinforcing steel can include removing damaged bars and splicing in new bars. Replacement of bridge bearings requires the bridge superstructure to be raised, or jacked, to allow the existing bearings to be removed and replaced. In short, as a well-known business E-platform of promoting stone industry, we are the world leading portal website in stone industry. It mainly provides professional services of Internet application such as B to B E-commerce and network marketing for stone manufacturers and traders all over the world. The overall product marketing system of STONEBTB.com is based with the target that to assist stone enterprises to extend their overseas markets and upgrade their product and brands. It analyses the B to B international purchasing flow carefully and sets up network marketing solutions for stone trading enterprises involved. So far, its client resource has accounted over 100 thousand spreading more than 100 countries and regions, with a visit volume exceeding 5 million times annually. If you are interested in us and want to consult us freely, you can also see stair tread or become a loyal follower of us by @ https://twitter.com/stonebtb.
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