Matters needing attention in bridge deck pavement construction?

Matters needing attention in bridge deck pavement construction are very important. Matters needing attention are formulated to better ensure the construction quality, and the treatment of every detail is very critical. Zhong Da Consulting will explain the matters needing attention in bridge deck pavement construction.

1, after the completion of the anti-collision guardrail construction, before the sidewalk construction, thoroughly remove the pulp skin, soil, concrete slag, etc. To ensure that the bridge deck is free of debris.

2. Measure and pay-off in advance at the site, determine the position of steel bars, determine the protective layer of steel mesh, strictly control the paving elevation, and frequently measure, check and rectify.

3. After the bridge deck cleaning is completed, retest the bridge deck elevation and compare it with the design elevation. Due to some errors in the fabrication of bridge deck precast beams, the thickness of bridge deck pavement may need to be slightly adjusted. The principle of adjustment should be to ensure that the bridge deck alignment and bridge deck pavement thickness meet the design and specification requirements.

4, binding pavement reinforcement or laying steel mesh. Before the bridge deck reinforcement is installed, the oil stain, loose concrete, mortar and other rubbish on the beam slab should be removed first, and then washed clean with water. The bridge deck should be smooth, rough and tidy. If the roughness does not meet the requirements, it should be chiseled or milled again to make it meet the requirements.

5. After reinforcement is completed, make elevation control points, which are made of concrete blocks. Take no more than 5 meters as the measuring point, use hemp rope to locate between the points and make elevation blocks. The vertical and horizontal spacing of elevation control points is 2m, and they are laid into a control network. The elevation of this point is the level elevation of the road surface, so it should be made seriously, responsibly and carefully.

6. pouring concrete. Concrete should be pumped. The concrete vibrating beam shall be vibrated by flat vibrator, which requires the concrete to be vibrated compactly, and the vibration shall not be missed after repeated vibrating. Collect water three times before the initial setting of concrete, and the last time must be smooth. At the same time of collecting water for the last time, the concrete surface should be washed, and the washed hair should be neat and the depth is just right. It is forbidden to trample on the collected concrete surface. Finally, geotextile should be affixed for maintenance.

7. Leave 30cm concrete post-pouring belt at expansion joint for expansion joint construction.

For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd