Rubber airbag is the use of rubber polymer properties with high strength fiber cloth vulcanized into an expansion, contraction of the different shape of the inflated capsules, and a steel template in common use to form the concrete member in the cavity, the manufacture of hollow member, the air inflation core mold in the middle, and filled with compressed air, inflatable core model that stretch expansion reached its cross section design requirements, inflation pressure according to the company and factory logo. From the hollow out inflation core mold, simple to use, durable economy, when not inflated soft contraction, collapsible, curl, inflated with sufficient strength to withstand the pressure of concrete. This is any of the traditional template there is nothing comparable to this. Inflation core mold for reinforced concrete members draw hole, including the pile, roof, roof slab column, beam, construction, water conservancy project and pipeline blockage. The use of an inflatable mandrel construction, inflatable mandrel drawing hole process equipment is simple, not only saves the material, and changing the shape and other characteristics, can be made into circular, oval, rectangular, arch, eight shape, trapezoidal channels
Below is the inflation core mold + tunnel air inflation core mold + rubber core module + bridge plate of the advantages and disadvantages of the airbag:
Inflatable bridge core mold, rubber, rubber inflatable capsule operation is simple and convenient, can accelerate the precast hollow slab construction, and it can be used repeatedly, thereby reducing the prefabricated plate operating cost, obvious economic benefit.
The 2 disadvantage
Inflatable bridge core mold, rubber inflatable capsule, due to its light weight, do not have enough weight to customer service in the pouring process of concrete middle range buoyancy, the capsule with a steel bar skeleton overall rise, causing the underlying primary reinforcement protection layer and the base plate thickness is too large and the thickness of roof is insufficient, therefore in the nationwide quality common fault. ( but with the rubber capsules using a range of promotion, major project in succession on a solution, this is not the only one.. )