Year1
- 厂家：
- 衡水德祥
- 规格：
- D80-1200
- 型号：
- 齐全
Rubber The inflatable mandrel is a product made of vulcanized rubber and fiber reinforced layers. It has high tensile strength, elasticity and air tightness. After being filled with compressed air, it can replace the original wood mold, bamboo mold and steel mold and can be reused many times. It is a supporting product for concrete products that reduces costs and speeds up construction progress.
Installation of rubber inflatable mandrel
After the bridge deck steel bars are tied and welded, the pre-processed square steel bar frame that has been lengthened is welded to the steel bar net in the steel mesh according to the hollow position designed by the bridge deck. The steel bar frame is Welded with steel bars, its main function is to prevent the rubber airbag from bending easily and causing the hollow part of the bridge deck to be uneven. In addition, when installing the steel frame, the steel frame should be lower than the designed hollow position to offset the impact of the concrete at the bottom of the bridge deck on the bridge core mold
Rubber Inflatable mandrel
The upward force of the rubber inflatable mandrel in the inner mold of the hollow plate beam moves upward.
The pouring begins after the steel frame is installed. Therefore, during construction, the bottom of the bridge deck is first poured to vibrate it tightly. After the vibration is completed, the bridge mandrel prefabricated hollow slab core mold
The sharp stones in the contact area between the hollow plate beam inner mold rubber inflatable mandrel and the bottom and the concrete higher than the steel frame are removed to prevent sharp stones. The bottom of the rubber inflatable mandrel is not in place
The rubber inflatable mandrel must be inflated before installation to prevent the inflation pressure from being too high and should be controlled... and then The surface of the precast hollow core formwork should be painted with soapy water or covered with a layer of mulch to facilitate demoulding. These preparations for the precast hollow core formwork should be done before or at the same time as the bottom concrete is poured. After the concrete is poured at the bottom of the bridge deck, After the precast hollow slab core mold is placed, use the air pump to inflate it again until the air pressure in the precast hollow slab core mold reaches. Stop inflating and then continue pouring until the bridge deck is completed.
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