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Specifications and models of all Haotong expansion joint rubber strips are 100% quality
: Haotong Engineering Rubber Co., Ltd. (>Bridge expansion joint rubber strip
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First-class quality, (>Bridge expansion joint strips
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(>Bridge expansion joint strips Seam tape
It is a product specially designed for various types of bridge expansion joints. All specifications and models are produced in accordance with the standards of the Ministry of Communications and the Ministry of Railways. It can be used with type, type and type joints and other types of expansion joints.< br/> Rubber expansion joints use the high elasticity of rubber to adapt to the expansion and contraction deformation of the bridge deck when temperature changes. Rubber expansion joints have the characteristics of easy installation, smooth driving, waterproof, dustproof, low noise, light weight, and low cost. The advantages have been welcomed and praised by the bridge engineering community. R and R represent the type of rubber: R represents natural rubber, R represents the scope of application of chloroprene rubber. The expansion joint device using chloroprene rubber is suitable for areas with a temperature of + , using natural rubber) expansion joint devices are suitable for areas with a temperature of +
(>Bridge expansion joint strips
The material requirements for the expansion device should meet the transportation industry standard technical specifications of the "Rubber expansion device for highway bridges" Requirements. Ensure that all parts of the structure are safe, reliable, durable, easy to drain, and easy to replace. The telescopic device mainly consists of side beams, middle beams, sealing rubber belts, support beams, pressure-bearing and compression bearings, and displacement control boxes. , Anchor composition
Determine the reserved amount of the expansion device. Based on the design size of the beam end gap, installation season, local temperature changes and other factors, notify the manufacturer to determine the initial positioning value of the expansion joint. At the same time, the dry shrinkage and creep of the bridge concrete should also be considered. After adjusting the joint width, use fixed clamps to lock the joint rail and transport it to the construction site.
(>Bridge expansion joint strips
Opening to traffic maintenance After opening to traffic, it is important to maintain and repair the expansion joints The key to ensuring effective telescopic performance and prolonging its service life.) During the highway maintenance process, the accumulated sand, soil and stone debris in the rubber belt must be promptly cleaned to ensure free expansion and prevent large stones from puncturing the belt, especially in winter. It is necessary to promptly clean up the debris on the concrete surface of the expansion joint and the debris in the rubber strip. b) Frequently check whether there is any damage or cracks at the connection between the joint rigid beam and the road surface, repair it in time, and pour polyurethane sealant or ring into the joint. Oxygen resin is mixed with amine curing agent and cement sealant.
(>Bridge expansion joint strips
Construction precautions) The expansion device must be transported to the construction site in sections if the length exceeds the transportation length, and the steel sections must be butted on site The top surface must be polished smooth after welding. b) Before cutting, cover the notch with a layer of mulch. The width of the mulch should be at least wider than each side of the notch to prevent damage during the notch. Contaminate the oil surface.
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