10.5. tube. When the concrete is vibrated, we should pay attention to avoid the bellows to prevent the vibration rod from leaking;10.6. to nap. Because of concrete pouring, the surface still paving asphalt concrete, in order to enhance the bonding between the deck and asphalt layer layer of political government must firmly on the concrete surface roughening treatment:10.7. maintenance. After the concrete pouring, maintenance to improve the strength of concrete and prevent the formation of fine cracks, has an important role. Therefore, water conservation should not be less than seven days.
10.4. rack instrument. The control box girder concrete axis and elevation is very important, must set up the theodolite and leveling instrument, to observe at any time by professional technicians, such as the discovery of axis deviation, timely adjustment in the front end of the guide beam hoist by setting. If the elevation deviation is found, it is adjusted by the pull rod on the front crossbeam. The adjustment should be carried out before the initial setting of the concrete;
Concrete pouring management should pay attention to seven technical measures10, 1 square hole. When pouring the concrete at the bottom of the roof, the roof plate can be opened on the two 50x 50 cm square hole, the concrete poured into the hole, to be completed after the completion of the concrete pouring floor sealing hole;10.2. is not overweight. When hanging basket construction concrete pouring V type pier, the difference between the pouring weight of the cross box girder and the cross shore box girder can not exceed 15 tons;10.3. symmetry. When pouring concrete in the same box girder section, it is necessary to carry out the operation of the left and right symmetry, so as to avoid the lateral displacement of the guide beam and cause the displacement of the front plane of the beam;
